diff --git a/bin/chip8-test-suite.8o b/bin/chip8-test-suite.8o
index 963fadd..470dcf0 100644
--- a/bin/chip8-test-suite.8o
+++ b/bin/chip8-test-suite.8o
@@ -30,25 +30,24 @@
   clear
 
   v1 := 1
-  show  8 logo-part1
-  show 16 logo-part2
-  show 24 logo-part3
-  show 32 logo-part4
-  show 40 logo-part5
-  show 48 logo-part6
+  show  8 splash-0-0
+  show 16 splash-1-0
+  show 24 splash-2-0
+  show 32 splash-3-0
+  show 40 splash-4-0
+  show 48 splash-5-0
 
   v1 := 16
-  show  8 logo-part7
-  show 16 logo-part8
-  show 24 logo-part9
-  show 32 logo-part10
-  show 40 logo-part11
-  show 48 logo-part12
+  show  8 splash-0-1
+  show 16 splash-1-1
+  show 24 splash-2-1
+  show 32 splash-3-1
+  show 40 splash-4-1
+  show 48 splash-5-1
 
   jump select-test
 
 
-
 # After that, if the user auto-started a test, run it:
 
 : select-test
@@ -86,7 +85,6 @@
   if v0 == 16 then return
   jump -
 
-
 # A cute little menu to select a test
 
 : menu-after-keypress
@@ -201,7 +199,6 @@
 : menu-choose-jump
   0 0 # jump <item>
 
-
 # Font rendering code and character data
 # Kept this very simplistic and fast
 
@@ -236,7 +233,6 @@
   return
 
 
-
 # Include all available tests:
 
 # Disassembly of the famous "IBM logo" program, published here before:
@@ -278,7 +274,6 @@
 
   jump menu-after-keypress    # Address 552 / 0x228
 
-
 # Corax89's chip8-test-rom, published here before:
 # https://github.com/corax89/chip8-test-rom
 
@@ -690,12 +685,12 @@
 
   # Shift right (with LSB)
   opcode 0x86
-  vF := 7
-  vF >>= vF # 3 (0x3), but should be overwritten by flag, so 1
+  vF := 27
+  vF >>= vF # 13 (0xD), but should be overwritten by flag, so 1
   v3 := vF
-  v2 := 3
-  v2 >>= v2 # 1 (0x1)
-  expect-v2-vf-v3 1 1 1
+  v2 := 27
+  v2 >>= v2 # 13 (0xD)
+  expect-v2-vf-v3 13 1 1
 
   # Subtraction in the other direction (with carry)
   opcode 0x87
@@ -733,7 +728,6 @@
 
   jump menu-after-keypress
 
-
 # Quirks test
 
 # This is a visual adaptation of some of the tests I wrote for Silicon8
@@ -777,32 +771,30 @@
 : quirks-run-tests
   waitKeyRelease
 
-  # Determine frames per second
+  # Determine frames per second for dispQuirk
   clear
-  v0 := 120
-  delay := v0
   i := quirks-values
   load v4
   i := quirks-image
+  vF := 120
+  delay := vF
   loop
-    v5 := 32
+    v5 := 30
     loop
-      sprite v0 v1 8
+      sprite v0 v1 1
       v5 -= 1
-    if v5 != 0 then again
+      if v5 != 0 then
+    again
     v2 += v4
     v3 += vF
     vE := delay
   if vE != 0 then again
 
-  vE := 128
-  v2 >>= v2
-  v3 >>= v3
-  if vF == 1 then v2 |= vE
-
+  # We expect the inner loop with 30 `sprite`s to have been able to run four
+  # times in the timespan of 120 interrupts
   v0 := 1
   if v3 != 0 then v0 := 0
-  if v2 != 2 then v0 := 0
+  if v2 != 4 then v0 := 0
   i := scratchpad-plus-1
   save v0
 
@@ -1036,7 +1028,6 @@
 
   jump menu-after-keypress
 
-
 # Keypad test
 # A fresh new implementation for this test suite
 
@@ -1138,34 +1129,33 @@
   sprite v0 v1 3
   jump menu-after-keypress
 
-
-
-
-: logo-part1
+: splash-0-0
   0x0f 0x02 0x02 0x02 0x02 0x02 0x00 0x00 0x1f 0x3f 0x71 0xe0 0xe5 0xe0 0xe8
-: logo-part2
+: splash-1-0
   0xa0 0x0d 0x2a 0x28 0x28 0x28 0x00 0x00 0x18 0xb8 0xb8 0x38 0x38 0x3f 0xbf
-: logo-part3
+: splash-2-0
   0x00 0x19 0xa5 0xbd 0xa1 0x9d 0x00 0x00 0x0c 0x1d 0x1d 0x01 0x0d 0x1d 0x9d
-: logo-part4
+: splash-3-0
   0x01 0xc7 0x29 0x29 0x29 0x27 0x00 0x00 0xf8 0xfc 0xce 0xc6 0xc6 0xc6 0xc6
-: logo-part5
+: splash-4-0
   0x00 0x49 0x4a 0x49 0x48 0x3b 0x00 0x00 0x00 0x01 0x03 0x03 0x03 0x01 0xf0
-: logo-part6
+: splash-5-0
   0x30 0x90 0x00 0x00 0x80 0x00 0x00 0x00 0xfe 0xc7 0x83 0x83 0x83 0xc6 0xfc
-: logo-part7
+: splash-0-1
   0xe7 0xe0 0xe0 0xe0 0xe0 0x71 0x3f 0x1f 0x00 0x00 0x07 0x02 0x02 0x02 0x02
-: logo-part8
+: splash-1-1
   0x39 0x38 0x38 0x38 0x38 0xb8 0xb8 0x38 0x00 0x00 0x31 0x4a 0x79 0x40 0x3b
-: logo-part9
+: splash-2-1
   0xdd 0xdd 0xdd 0xdd 0xdd 0xdd 0xdd 0xdd 0x00 0x00 0xa0 0x38 0x20 0xa0 0x18
-: logo-part10
+: splash-3-1
   0xce 0xfc 0xf8 0xc0 0xc0 0xca 0xca 0xc4 0x00 0x00 0x30 0x44 0x24 0x14 0x63
-: logo-part11
-  0xf1 0x03 0x07 0xc7 0x27 0x47 0x83 0xe1 0x00 0x00 0x28 0x8e 0xa8 0xa8 0xa6
-: logo-part12
+: splash-4-1
+  0xf1 0x03 0x07 0xc7 0x27 0x47 0x23 0xc1 0x00 0x00 0x28 0x8e 0xa8 0xa8 0xa6
+: splash-5-1
   0xce 0x87 0x03 0x03 0x03 0x87 0xfe 0xfc 0x00 0x00 0x60 0x90 0xf0 0x80 0x70
 
+
+
 : scratchpad
   0
 : scratchpad-plus-1
@@ -1177,6 +1167,7 @@
 : scratchpad-plus-16
   0
 
+
 : menu-main
   10 8  :pointer ibm-logo
   10 13 :pointer corax89
@@ -1201,6 +1192,7 @@
   0b11000000
   0b11000000
 
+
 # Positive and negative images
 : imageok
   0xEA 0xAC 0xAA 0xEA
@@ -1372,6 +1364,7 @@
   0b00000000
   0b01000000
 
+
 : ibm-logo-part1
   0xFF 0x00 0xFF 0x00 0x3C 0x00 0x3C 0x00 0x3C 0x00 0x3C 0x00 0xFF 0x00 0xFF
 : ibm-logo-part2
@@ -1385,6 +1378,7 @@
 : ibm-logo-part6
   0xE0 0x00 0xE0 0x00 0x80 0x00 0x80 0x00 0x80 0x00 0x80 0x00 0xE0 0x00 0xE0
 
+
 : flags-no-carry
   str "HAPPY" 0
 : flags-carry
@@ -1392,6 +1386,7 @@
 : flags-other
   str "OTHER" 0
 
+
 : quirks-menu
   12 13 :pointer quirks-chip8
   12 18 :pointer quirks-schip
@@ -1427,9 +1422,10 @@
   str "ERR" 0
 
 : quirks-values
-  28 12 0 0 1
+  32 12 0 0 1
 : quirks-image
-  0x3C 0x7E 0xFF 0xDB 0xFF 0xDB 0x66 0x3C
+  0b10000000
+
 
 : keypad-menu
   4 13 :pointer keypad-down
@@ -1493,6 +1489,7 @@
   0b11111110
   0b11111110
 
+
 # Jump quirk targets:
 :org 0xE87
   # We jump here when using v0 in the `jump0` quirks test
@@ -1501,4 +1498,4 @@
 :org 0xE8B
   # We jump here when using vE in the `jump0` quirks test
   v5 := 1
-  jump quirks-resume
\ No newline at end of file
+  jump quirks-resume
diff --git a/bin/chip8-test-suite.ch8 b/bin/chip8-test-suite.ch8
index 67cff63..57065dc 100644
Binary files a/bin/chip8-test-suite.ch8 and b/bin/chip8-test-suite.ch8 differ
diff --git a/docs/index.html b/docs/index.html
index f0e1a5d..1e9545e 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -1,5 +1,5 @@
 <!-- Standalone Generated By Octo (octo-ide.com) -->
-<script>data={"program":"# CHIP-8 Test Suite -- Timendus, 2022\n# https://github.com/Timendus/chip8-test-suite\n\n# The program begins from 0x200 with the CHIP-8 logo image,\n# which contains the `main` label:\n\n# CHIP-8 logo ROM by Timendus, published here before:\n# https://github.com/Timendus/chip-8/blob/master/octo/CHIP-8%20logo.8o\n\n# 132 bytes, 20 cycles to show \"CHIP-8\" on the screen\n#\n# This ROM is simpler than the IBM logo in two ways:\n#  a) It does not use the addition instruction\n#  b) It only renders aligned sprites (all coordinates are multiples of 8)\n#\n# Uses only these five instructions:\n#  * Clear the screen\n#  * Load normal register with immediate value\n#  * Load i register with immediate value\n#  * Draw sprite to screen (only aligned)\n#  * Jump (at the end, so kinda optional)\n\n:macro show X address {\n  v0 := X\n  i := address\n  sprite v0 v1 15\n}\n\n: main\n  clear\n\n  v1 := 1\n  show  8 logo-part1\n  show 16 logo-part2\n  show 24 logo-part3\n  show 32 logo-part4\n  show 40 logo-part5\n  show 48 logo-part6\n\n  v1 := 16\n  show  8 logo-part7\n  show 16 logo-part8\n  show 24 logo-part9\n  show 32 logo-part10\n  show 40 logo-part11\n  show 48 logo-part12\n\n  jump select-test\n\n\n\n# After that, if the user auto-started a test, run it:\n\n: select-test\n  i := 0x1FF\n  load v0\n  if v0 == 1 then jump ibm-logo\n  if v0 == 2 then jump corax89\n  if v0 == 3 then jump flags-test\n  if v0 == 4 then jump quirks-test\n  if v0 == 5 then jump keypad-test\n  if v0 == 9 then jump menu\n  jump menu-after-keypress\n\n# Include all support code:\n\n:stringmode str \"$0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ -.\" {\n  :byte { 4 * VALUE }\n}\n\n:macro text X Y STR {\n  vD := X\n  vE := Y\n  i := STR\n  drawText\n}\n\n:alias x vA\n:alias y vB\n\n: waitKeyRelease\n  v0 := 0\n: -\n  if v0 key then jump -\n  v0 += 1\n  if v0 == 16 then return\n  jump -\n\n\n# A cute little menu to select a test\n\n: menu-after-keypress\n  v0 := key\n  waitKeyRelease\n: menu\n  clear\n  text 10  1 menu-header\n  text 14  7 menu-ibm\n  text 14 12 menu-corax\n  text 14 17 menu-flags\n  text 14 22 menu-quirks\n  text 14 27 menu-keypad\n\n  :unpack 0xA menu-main\n  v2 := 4\n  #jump menu-start\n\n# Input:\n#  * v0 v1 point to 0xA + menu struct\n#  * v2 holds the length (zero-indexed)\n: menu-start\n  :alias cursorX v0\n  :alias cursorY v1\n  :alias numItems v2\n  :alias showing v3\n  :alias temp v4\n  :alias currentItem v5\n  :alias selectedItem v6\n\n  currentItem := 0\n  i := menu-draw-cursor\n  save v1\n  i := menu-choose-load\n  save v1\n  jump menu-draw-cursor\n: menu-move-cursor\n  if showing == 1 then sprite cursorX cursorY 2 # i should still be correct\n  waitKeyRelease\n: menu-draw-cursor\n  0 0 # i := <menu>\n  i += currentItem\n  i += currentItem\n  i += currentItem\n  i += currentItem\n  load cursorY # and cursorX\n  showing := 0\n  delay := showing\n\n  loop\n    # Blink cursor\n    temp := delay\n    if temp == 0 begin\n      i := menu-cursor\n      sprite cursorX cursorY 2\n      temp := 10\n      delay := temp\n      temp := 1\n      showing ^= temp\n    end\n\n    # Move cursor up\n    temp := 0xE\n    if temp key begin\n      if currentItem != 0 begin\n        currentItem -= 1\n        jump menu-move-cursor\n      end\n    end\n    # Move cursor down\n    temp := 0xF\n    if temp key begin\n      if currentItem != numItems begin\n        currentItem += 1\n        jump menu-move-cursor\n      end\n    end\n    # Start test under cursor\n    selectedItem := currentItem\n    temp := 0xA\n    if temp key then jump menu-choose\n\n    # Use numbers to jump to tests directly\n    temp := 0\n    numItems += 1\n    loop\n      temp += 1\n      if temp key begin\n        selectedItem := temp\n        selectedItem -= 1\n        jump menu-choose\n      end\n    if temp != numItems then again\n    numItems -= 1\n  again\n\n: menu-choose\n  waitKeyRelease\n: menu-choose-load\n  0 0 # i := <menu>\n  i += selectedItem\n  i += selectedItem\n  i += selectedItem\n  i += selectedItem\n  temp := 2\n  i += temp\n  load v1\n  temp := 0x10\n  v0 |= temp\n  i := menu-choose-jump\n  save v1\n: menu-choose-jump\n  0 0 # jump <item>\n\n\n# Font rendering code and character data\n# Kept this very simplistic and fast\n\n:macro drawCharacter REG {\n  if REG == 0 then return\n  v0 := REG\n  drawChar\n}\n\n: drawText\n  load vC\n  drawChar\n  drawCharacter v1\n  drawCharacter v2\n  drawCharacter v3\n  drawCharacter v4\n  drawCharacter v5\n  drawCharacter v6\n  drawCharacter v7\n  drawCharacter v8\n  drawCharacter v9\n  drawCharacter vA\n  drawCharacter vB\n  drawCharacter vC\n  return\n\n: drawChar\n  i := characters\n  i += v0\n  sprite vD vE 4\n  vD += 4\n  return\n\n\n\n# Include all available tests:\n\n# Disassembly of the famous \"IBM logo\" program, published here before:\n# https://github.com/Timendus/chip-8/blob/master/octo/IBM%20logo.8o\n\n# Annotated and converted to Octo mnemonics by Timendus, in the hope that it\n# will be useful to people trying to debug their CHIP-8 interpreters\n#\n# Original \"IBM logo\" MD5 hash:       2dbace8066709ac9a264d23281820d32\n# MD5 hash of binary from this code:  2dbace8066709ac9a264d23281820d32\n\n: ibm-logo\n  clear                       # Address 512 / 0x200\n\n  i := ibm-logo-part1         # Address 514 / 0x202\n  v0 := 12                    # Address 516 / 0x204\n  v1 := 8\n  sprite v0 v1 15             # Address 520 / 0x208\n\n  v0 += 9                     # Address 522 / 0x20A\n  i := ibm-logo-part2\n  sprite v0 v1 15\n\n  i := ibm-logo-part3         # Interesting mixup here, swapping the operations\n  v0 += 8\n  sprite v0 v1 15\n\n  v0 += 4\n  i := ibm-logo-part4\n  sprite v0 v1 15\n\n  v0 += 8\n  i := ibm-logo-part5\n  sprite v0 v1 15\n\n  v0 += 8\n  i := ibm-logo-part6\n  sprite v0 v1 15\n\n  jump menu-after-keypress    # Address 552 / 0x228\n\n\n# Corax89's chip8-test-rom, published here before:\n# https://github.com/corax89/chip8-test-rom\n\n# MIT License\n#\n# Copyright (c) 2019 corax89\n#\n# Permission is hereby granted, free of charge, to any person obtaining a copy\n# of this software and associated documentation files (the \"Software\"), to deal\n# in the Software without restriction, including without limitation the rights\n# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n# copies of the Software, and to permit persons to whom the Software is\n# furnished to do so, subject to the following conditions:\n#\n# The above copyright notice and this permission notice shall be included in all\n# copies or substantial portions of the Software.\n#\n# THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE\n# SOFTWARE.\n\n:alias x0 v8\n:alias x1 v9\n:alias x2 vA\n:alias y\tvB\n\n:macro drawop A B {\n  i := A\n  sprite x0 y 4\n  i := B\n  sprite x1 y 4\n}\n\n: test2X\n  #test 2x\n  i := imageok\n  sprite x2 y 4\n  return\n\n: test1x\n  i := imageok\n  sprite x2 y 4\n  jump menu-after-keypress\n\n: corax89\n  clear\n  x0 := 1\n  x1 := 5\n  x2 := 10\n  y := 1\n  v5 := 42\n  v6 := 43\n\n  #test 3x\n  drawop im3 imX\n  i := imageok\n  if v6 != 43 then i := imagefalse\n  sprite x2 y 4\n\n  #test 4x\n  y := 6\n  drawop im4 imX\n  i := imagefalse\n  if v5 == 42 then i := imageok\n  sprite x2 y 4\n\n  #test 5x\n  y := 11\n  drawop im5 imX\n  i := imagefalse\n  if v5 != v6 then i := imageok\n  sprite x2 y 4\n\n  #test 7x\n  y := 16\n  drawop im7 imX\n  i := imagefalse\n  v6 += 255\n  if v6 == 42 then i := imageok\n  sprite x2 y 4\n\n  #test 9x\n  y := 21\n  drawop im9 imX\n  i := imagefalse\n  if v5 == v6 then i := imageok\n  sprite x2 y 4\n\n  #test \"AX\"\n  # Note by Timendus: I think this really tests 2NNN, not ANNN, so I changed the\n  # displayed label on this to not confuse users.\n  # See PR: https://github.com/corax89/chip8-test-rom/pull/9\n  y := 26\n  drawop im2 imX\n  test2X\n\n  #test 0E\n  x0 := 24\n  x1 := 28\n  x2 := 33\n  y := 1\n  drawop im0 imE\n  i := imageok\n  sprite x2 y 4\n\n  #test 8xy0\n  y := 6\n  drawop im8 im0\n  i := imagefalse\n  v7 := v5\n  if v7 == 42 then i := imageok\n  sprite x2 y 4\n\n  #test 8xy1\n  y := 11\n  drawop im8 im1\n  i := imagefalse\n  v7 := 42\n  v7 |= y\n  if v7 == 43 then i := imageok\n  sprite x2 y 4\n\n  #test 8xy2\n  y := 16\n  drawop im8 im2\n  i := imagefalse\n  v6 := 120\n  v7 := 31\n  v7 &= v6\n  if v7 == 24 then i := imageok\n  sprite x2 y 4\n\n  #test 8xy3\n  y := 21\n  drawop im8 im3\n  i := imagefalse\n  v6 := 120\n  v7 := 31\n  v7 ^= v6\n  if v7 == 103 then i := imageok\n  sprite x2 y 4\n\n  #test 8xy4\n  y := 26\n  drawop im8 im4\n  i := imagefalse\n  v6 := 140\n  v7 := 140\n  v7 += v6\n  if v7 == 24 then i := imageok\n  sprite x2 y 4\n\n  #test 8xy5\n  x0 := 47\n  x1 := 51\n  x2 := 56\n  y  := 1\n  drawop im8 im5\n  i := imagefalse\n  v6 := 140\n  v7 := 120\n  v7 -= v6\n  if v7 == 236 then i := imageok\n  sprite x2 y 4\n\n  #test \"8xy6\"\n  # Note by Timendus: This should be 8XYE, changed the label here too.\n  # See PR: https://github.com/corax89/chip8-test-rom/pull/7\n  y := 6\n  drawop im8 imE\n  i := imagefalse\n  v6 := 224\n  v6 <<= v6\n  if v6 == 192 then i := imageok\n  sprite x2 y 4\n\n  #test \"8xyE\"\n  # Note by Timendus: This should be 8XY6, changed the label here too.\n  # See PR: https://github.com/corax89/chip8-test-rom/pull/7\n  y := 11\n  drawop im8 im6\n  i := imagefalse\n  v6 := 15\n  v6 >>= v6\n  if v6 == 7 then i := imageok\n  sprite x2 y 4\n\n  #test Fx55,Fx65\n  y := 16\n  drawop imF im5\n  i := scratchpad\n  v0 := 0\n  v1 := 48\n  save v1\n  i := scratchpad-plus-1\n  load v0\n  i := imagefalse\n  if v0 == 48 then i := imageok\n  sprite x2 y 4\n\n  #test Fx33\n  y := 21\n  drawop imF im3\n  i := scratchpad\n  v6 := 137\n  bcd v6\n  load v2\n  i := imageok\n  if v0 != 1 then i := imagefalse\n  if v1 != 3 then i := imagefalse\n  if v2 != 7 then i := imagefalse\n  sprite x2 y 4\n\n  #test 1x\n  y := 26\n  drawop im1 imX\n  jump test1x\n\n# Image data is in text-rendering.8o, as part of the font\n\n# Flags test\n\n# This is a visual adaptation of the math tests I wrote for Silicon8\n# (https://github.com/Timendus/silicon8/tree/main/tests)\n\n:macro opcode OPC {\n  vD := OPC\n  flags-draw-opcode\n}\n\n: flags-draw-opcode\n  i := im0\n  vE := vD\n  vF := 0xF0\n  vE &= vF\n  vE >>= vE\n  vE >>= vE\n  i += vE\n  sprite x y 4\n  x += 4\n  i := im0\n  vE := vD\n  vF := 0x0F\n  vE &= vF\n  vE <<= vE\n  vE <<= vE\n  i += vE\n  sprite x y 4\n  x += 5\n  return\n\n:macro expect-v0 V0VAL {\n  x += 4\n  v2 := v0\n  vC := V0VAL\n  flags-draw-result\n  x += 9\n}\n\n:macro expect-v2-vf-v3 V2VAL VFVAL V3VAL {\n  vE := vF\n  vC := V2VAL\n  flags-draw-result\n  v2 := vE\n  vC := VFVAL\n  flags-draw-result\n  v2 := v3\n  vC := V3VAL\n  flags-draw-result\n  x += 1\n}\n\n: flags-draw-result\n  i := flag-err\n  if v2 == vC then i := flag-ok\n  y += 1\n  sprite x y 3\n  x += 4\n  y -= 1\n  return\n\n: flags-test\n  clear\n\n  ## Without complications\n\n  text 0 0 flags-no-carry\n  x := 22\n  y := 0\n\n  v0 := 50\n  v1 := 15\n\n  # OR\n  opcode 0x81\n  v3 := 15\n  vF := 20\n  v3 |= vF # 31 (0x1F)\n  vF := 0\n  v2 := v0\n  v2 |= v1 # 63 (0x3F)\n  expect-v2-vf-v3 63 0 31\n\n  # AND\n  opcode 0x82\n  v3 := 15\n  vF := 20\n  v3 &= vF # 4 (0x04)\n  vF := 0\n  v2 := v0\n  v2 &= v1 # 2 (0x02)\n  expect-v2-vf-v3 2 0 4\n\n  y += 5\n  x := 0\n\n  # XOR\n  opcode 0x83\n  v3 := 15\n  vF := 20\n  v3 ^= vF # 27 (0x1B)\n  vF := 0\n  v2 := v0\n  v2 ^= v1 # 61 (0x3D)\n  expect-v2-vf-v3 61 0 27\n\n  # Addition (no overflow)\n  opcode 0x84\n  v3 := 15\n  vF := 20\n  v3 += vF # 35 (0x23)\n  v2 := v0\n  v2 += v1 # 65 (0x41)\n  expect-v2-vf-v3 65 0 35\n\n  # Subtraction in one direction (no carry)\n  opcode 0x85\n  v3 := 20\n  vF := 15\n  v3 -= vF # 5 (0x05)\n  v2 := v0\n  v2 -= v1 # 35 (0x23)\n  expect-v2-vf-v3 35 1 5\n\n  y += 5\n  x := 0\n\n  # Shift right (no LSB)\n  opcode 0x86\n  vF := v0\n  vF >>= vF # 25 (0x19), but should be overwritten by flag, so 0\n  v3 := vF\n  v2 := v0\n  v2 >>= v2 # 25 (0x19)\n  expect-v2-vf-v3 25 0 0\n\n  # Subtraction in the other direction (no carry)\n  opcode 0x87\n  v3 := 15\n  vF := 20\n  v3 =- vF # 5 (0x05)\n  v2 := v1\n  v2 =- v0 # 35 (0x23)\n  expect-v2-vf-v3 35 1 5\n\n  # Shift left (no MSB)\n  opcode 0x8E\n  vF := v0\n  vF <<= vF # 100 (0x64), but should be overwritten by flag, so 0\n  v3 := vF\n  v2 := v0\n  v2 <<= v2 # 100 (0x64)\n  expect-v2-vf-v3 100 0 0\n\n\n  # With complications\n\n  text 0 16 flags-carry\n  x := 22\n  y := 16\n\n  v0 := 200\n  v1 := 100\n\n  # Addition (with overflow)\n  opcode 0x84\n  v3 := 200\n  vF := 100\n  v3 += vF # 300 (0x2C)\n  v2 := v0\n  v2 += v1 # 300 (0x2C)\n  expect-v2-vf-v3 0x2C 1 0x2C\n\n  # Subtraction in one direction (with carry)\n  opcode 0x85\n  v3 := 15\n  vF := 20\n  v3 -= vF # -5 = 251 (0xFB)\n  v2 := v1\n  v2 -= v0 # 100 - 200 = -100 = 156 (0x9C)\n  expect-v2-vf-v3 0x9C 0 0xFB\n\n  y += 5\n  x := 0\n\n  # Shift right (with LSB)\n  opcode 0x86\n  vF := 7\n  vF >>= vF # 3 (0x3), but should be overwritten by flag, so 1\n  v3 := vF\n  v2 := 3\n  v2 >>= v2 # 1 (0x1)\n  expect-v2-vf-v3 1 1 1\n\n  # Subtraction in the other direction (with carry)\n  opcode 0x87\n  v3 := 20\n  vF := 15\n  v3 =- vF # -5 = 251 (0xFB)\n  v2 := v0\n  v2 =- v1 # 100 - 200 = -100 = 156 (0x9C)\n  expect-v2-vf-v3 0x9C 0 0xFB\n\n  # Shift left (with MSB)\n  opcode 0x8E\n  vF := v0\n  vF <<= vF # 400 (0x90), but should be overwritten by flag, so 1\n  v3 := vF\n  v2 := v0\n  v2 <<= v2 # 400 (0x90)\n  expect-v2-vf-v3 0x90 1 1\n\n  # Addition to i\n\n  text 0 27 flags-other\n  x := 22\n  y := 27\n\n  opcode 0xFE\n  i := scratchpad\n  v1 := 0x10\n  i += v1\n  v0 := 0xAA\n  save v0\n  i := scratchpad-plus-16\n  load v0\n  expect-v0 0xAA\n\n  jump menu-after-keypress\n\n\n# Quirks test\n\n# This is a visual adaptation of some of the tests I wrote for Silicon8\n# (https://github.com/Timendus/silicon8/tree/main/tests) and some newly written\n# tests for specific quirks.\n\n: quirks-test\n  clear\n  i := 0x1FE\n  load v0\n  if v0 == 1 then jump quirks-chip8\n  if v0 == 2 then jump quirks-schip\n  if v0 == 3 then jump quirks-xochip\n\n  text  6  3 quirks-choose\n  text 16 12 quirks-str-chip8\n  text 16 17 quirks-str-schip\n  text 16 22 quirks-str-xochip\n\n  :unpack 0xA quirks-menu\n  v2 := 2\n  jump menu-start\n\n: quirks-chip8\n  i := scratchpad\n  v0 := 1\n  save v0\n  jump quirks-run-tests\n\n: quirks-schip\n  i := scratchpad\n  v0 := 2\n  save v0\n  jump quirks-run-tests\n\n: quirks-xochip\n  i := scratchpad\n  v0 := 3\n  save v0\n\n: quirks-run-tests\n  waitKeyRelease\n\n  # Determine frames per second\n  clear\n  v0 := 120\n  delay := v0\n  i := quirks-values\n  load v4\n  i := quirks-image\n  loop\n    v5 := 32\n    loop\n      sprite v0 v1 8\n      v5 -= 1\n    if v5 != 0 then again\n    v2 += v4\n    v3 += vF\n    vE := delay\n  if vE != 0 then again\n\n  vE := 128\n  v2 >>= v2\n  v3 >>= v3\n  if vF == 1 then v2 |= vE\n\n  v0 := 1\n  if v3 != 0 then v0 := 0\n  if v2 != 2 then v0 := 0\n  i := scratchpad-plus-1\n  save v0\n\n  # Determine if sprites get clipped vertically\n  clear\n  i := keypad-cursor\n  v0 := 28\n  v1 := 29\n  sprite v0 v1 6\n  v0 := 22\n  v1 := 2\n  sprite v0 v1 2\n  v5 := vF\n  v0 := 34\n  sprite v0 v1 2\n  v6 := vF\n\n  # Determine if sprites get clipped horizontally\n  clear\n  i := keypad-cursor\n  v0 := 61\n  v1 := 5\n  sprite v0 v1 6\n  v0 := 3\n  v1 := 4\n  sprite v0 v1 2\n  v7 := vF\n  v1 := 10\n  sprite v0 v1 2\n  v8 := vF\n\n  # Determine if sprites get wrapped (both directions)\n  clear\n  v0 := 110\n  v1 := 50\n  sprite v0 v1 6 # Should draw at 46,18\n  v0 := 40\n  v1 := 17\n  sprite v0 v1 2\n  v9 := vF\n  v0 := 52\n  sprite v0 v1 2\n  v9 += vF\n  v1 := 23\n  sprite v0 v1 2\n  v9 += vF\n  v0 := 40\n  sprite v0 v1 2\n  v9 += vF\n\n  # Save result\n  v0 := 0\n  # Clipping\n  if v5 == 0 then v0 := 1\n  if v5 != v6 then v0 := 2\n  if v5 != v7 then v0 := 2\n  if v5 != v8 then v0 := 2\n  # Wrapping\n  if v9 != 4 then v0 := 2\n  i := scratchpad-plus-2\n  save v0\n\n  # Present results\n\n  clear\n\n  # vfQuirk\n  # When using &, | or ^, the flags register always gets reset to 0\n  text 1 1 quirks-vf\n  v5 := 0\n  vF := 15\n  v0 &= v0\n  if vF == 0 then v5 := 1\n  v6 := 0\n  vF := 15\n  v0 |= v0\n  if vF == 0 then v6 := 1\n  v7 := 0\n  vF := 15\n  v0 ^= v0\n  if vF == 0 then v7 := 1\n  i := scratchpad\n  load v0\n  i := flag-err\n  if v0 == 1 begin\n    # Selected CHIP-8\n    if v5 == 1 then i := flag-ok\n  else\n    # Selected SCHIP or XO-CHIP\n    if v5 == 0 then i := flag-ok\n  end\n  x := 59\n  y := 2\n  sprite x y 3\n  i := quirks-off\n  if v5 == 1 then i := quirks-on\n  if v5 != v6 then i := quirks-inconsistent\n  if v5 != v7 then i := quirks-inconsistent\n  vD := 44\n  vE := 1\n  drawText\n\n  # memQuirk\n  # When reading or writing memory, i gets incremented\n  text 1 6 quirks-mem\n  v0 := 5\n  i := scratchpad-plus-16\n  save v0\n  load v0\n  v5 := v0\n  i := scratchpad\n  load v0\n  i := flag-err\n  if v0 == 2 begin\n    # Selected SCHIP\n    if v5 == 5 then i := flag-ok\n  else\n    # Selected CHIP-8 or XO-CHIP\n    if v5 != 5 then i := flag-ok\n  end\n  x := 59\n  y := 7\n  sprite x y 3\n  i := quirks-on\n  if v5 == 5 then i := quirks-off\n  vD := 44\n  vE := 6\n  drawText\n\n  # dispQuirk\n  # When drawing a sprite to the screen, the interpreter waits for v-blank\n  text 1 11 quirks-disp\n  i := scratchpad\n  load v1\n  i := flag-err\n  if v0 == 1 begin\n    # Selected CHIP-8\n    if v1 == 1 then i := flag-ok\n  else\n    # Selected SCHIP or XO-CHIP\n    if v1 == 0 then i := flag-ok\n  end\n  x := 59\n  y := 12\n  sprite x y 3\n  i := quirks-off\n  if v1 == 1 then i := quirks-on\n  vD := 44\n  vE := 11\n  drawText\n\n  # clipQuirk\n  # Sprites wrap to the top of the screen\n  text 1 16 quirks-clip\n  i := scratchpad\n  load v2\n  i := flag-err\n  if v0 == 3 begin\n    # Selected XO-CHIP\n    if v2 == 0 then i := flag-ok\n  else\n    # Selected CHIP-8 or SCHIP\n    if v2 == 1 then i := flag-ok\n  end\n  x := 59\n  y := 17\n  sprite x y 3\n  i := quirks-off\n  if v2 == 1 then i := quirks-on\n  if v2 == 2 then i := quirks-inconsistent\n  vD := 44\n  vE := 16\n  drawText\n\n  # shiftQuirk\n  # When shifting a register, the interpreter always shifts register X into\n  # register X (instead of shifting register Y into register X)\n  text 1 21 quirks-shift\n  v5 := 0\n  v6 := 8\n  v7 := 0\n  v8 := 32\n  v5 <<= v6\n  v7 >>= v8\n  i := scratchpad\n  load v0\n  i := flag-err\n  if v0 == 2 begin\n    # Selected SCHIP\n    if v5 == 0 then i := flag-ok\n  else\n    # Selected CHIP-8 or XO-CHIP\n    if v5 != 0 then i := flag-ok\n  end\n  x := 59\n  y := 22\n  sprite x y 3\n  i := quirks-off\n  if v5 == 0 then i := quirks-on\n  if v5 != v7 then i := quirks-inconsistent\n  vD := 44\n  vE := 21\n  drawText\n\n  # jumpQuirk\n  # When using `jump0` (BNNN) the interpreter doesn't jump to NNN + v0 but to\n  # NNN + vX where X is the highest nibble of NNN\n  text 1 26 quirks-jump\n  v0 := 0x87\n  vE := 0x8B\n  jump0 0xE00      # This jumps to one of two routines defined in index.8o (for\n: quirks-resume    # reasons of having to put them in precisely the right spot)\n  i := scratchpad\n  load v0\n  i := flag-err\n  if v0 == 2 begin\n    # Selected SCHIP\n    if v5 != 0 then i := flag-ok\n  else\n    # Selected CHIP-8 or XO-CHIP\n    if v5 == 0 then i := flag-ok\n  end\n  x := 59\n  y := 27\n  sprite x y 3\n  i := quirks-off\n  if v5 == 1 then i := quirks-on\n  vD := 44\n  vE := 26\n  drawText\n\n  jump menu-after-keypress\n\n\n# Keypad test\n# A fresh new implementation for this test suite\n\n: keypad-test\n  clear\n  i := 0x1FE\n  load v0\n  if v0 == 1 then jump keypad-down\n  if v0 == 2 then jump keypad-up\n  if v0 == 3 then jump keypad-getkey\n\n  text 10  3 keypad-choose\n  text  8 12 keypad-str-key-down\n  text  8 17 keypad-str-key-up\n  text  8 22 keypad-str-getkey\n\n  :unpack 0xA keypad-menu\n  v2 := 2\n  jump menu-start\n\n: keypad-down\n  v1 := 0x9E\n  jump keypad-skip-if-key-test\n: keypad-up\n  v1 := 0xA1\n: keypad-skip-if-key-test\n  v0 := 0xEE\n  i := keypad-opcode\n  save v1\n  clear\n  i := keypad-initial-values\n  load vF\n  i := scratchpad\n  save vF\n  text 18 3 keypad-row1\n  text 18 10 keypad-row2\n  text 18 17 keypad-row3\n  text 18 24 keypad-row4\n  vE := 0\n  loop\n  keypad-pressed\n  vE += 1\n  if vE == 16 then vE := 0\n  again\n\n: keypad-pressed\n  i := scratchpad\n  i += vE\n  load v0\n  v2 := 1\n: keypad-opcode\n  if vE key then v2 := 0\n  if v0 != v2 begin\n    v0 := vE\n    v0 <<= v0\n    i := keypad-coordinates\n    i += v0\n    load v1\n    i := keypad-cursor\n    sprite v0 v1 6\n    i := scratchpad\n    i += vE\n    v0 := v2\n    save v0\n  end\n  return\n\n: keypad-getkey\n  clear\n  text 6 13 keypad-str-press-key\n  v0 := 3\n  delay := v0\n  v0 := key\n  v1 := delay\n  if v1 != 0 then jump keypad-getkey-no-halt\n  if v0 key then jump keypad-getkey-no-release-wait\n  clear\n  i := flag-ok\n  v0 := 30\n  v1 := 9\n  sprite v0 v1 3\n  text 16 17 keypad-str-good\n  jump menu-after-keypress\n\n: keypad-getkey-no-halt\n  vD := 10\n  i := keypad-str-no-halt\n  jump keypad-getkey-error\n: keypad-getkey-no-release-wait\n  vD := 8\n  i := keypad-str-no-release-wait\n: keypad-getkey-error\n  clear\n  vE := 17\n  drawText\n  i := flag-err\n  v0 := 30\n  v1 := 9\n  sprite v0 v1 3\n  jump menu-after-keypress\n\n\n\n\n: logo-part1\n  0x0f 0x02 0x02 0x02 0x02 0x02 0x00 0x00 0x1f 0x3f 0x71 0xe0 0xe5 0xe0 0xe8\n: logo-part2\n  0xa0 0x0d 0x2a 0x28 0x28 0x28 0x00 0x00 0x18 0xb8 0xb8 0x38 0x38 0x3f 0xbf\n: logo-part3\n  0x00 0x19 0xa5 0xbd 0xa1 0x9d 0x00 0x00 0x0c 0x1d 0x1d 0x01 0x0d 0x1d 0x9d\n: logo-part4\n  0x01 0xc7 0x29 0x29 0x29 0x27 0x00 0x00 0xf8 0xfc 0xce 0xc6 0xc6 0xc6 0xc6\n: logo-part5\n  0x00 0x49 0x4a 0x49 0x48 0x3b 0x00 0x00 0x00 0x01 0x03 0x03 0x03 0x01 0xf0\n: logo-part6\n  0x30 0x90 0x00 0x00 0x80 0x00 0x00 0x00 0xfe 0xc7 0x83 0x83 0x83 0xc6 0xfc\n: logo-part7\n  0xe7 0xe0 0xe0 0xe0 0xe0 0x71 0x3f 0x1f 0x00 0x00 0x07 0x02 0x02 0x02 0x02\n: logo-part8\n  0x39 0x38 0x38 0x38 0x38 0xb8 0xb8 0x38 0x00 0x00 0x31 0x4a 0x79 0x40 0x3b\n: logo-part9\n  0xdd 0xdd 0xdd 0xdd 0xdd 0xdd 0xdd 0xdd 0x00 0x00 0xa0 0x38 0x20 0xa0 0x18\n: logo-part10\n  0xce 0xfc 0xf8 0xc0 0xc0 0xca 0xca 0xc4 0x00 0x00 0x30 0x44 0x24 0x14 0x63\n: logo-part11\n  0xf1 0x03 0x07 0xc7 0x27 0x47 0x83 0xe1 0x00 0x00 0x28 0x8e 0xa8 0xa8 0xa6\n: logo-part12\n  0xce 0x87 0x03 0x03 0x03 0x87 0xfe 0xfc 0x00 0x00 0x60 0x90 0xf0 0x80 0x70\n\n: scratchpad\n  0\n: scratchpad-plus-1\n  0\n: scratchpad-plus-2\n  0 0 0 0 0\n  0 0 0 0 0\n  0 0 0 0\n: scratchpad-plus-16\n  0\n\n: menu-main\n  10 8  :pointer ibm-logo\n  10 13 :pointer corax89\n  10 18 :pointer flags-test\n  10 23 :pointer quirks-test\n  10 28 :pointer keypad-test\n\n: menu-header\n  str \"PICK A TEST\" 0\n: menu-ibm\n  str \"1 IBM LOGO\" 0\n: menu-corax\n  str \"2 CORAX89\" 0\n: menu-flags\n  str \"3 FLAGS\" 0\n: menu-quirks\n  str \"4 QUIRKS\" 0\n: menu-keypad\n  str \"5 KEYPAD\" 0\n\n: menu-cursor\n  0b11000000\n  0b11000000\n\n# Positive and negative images\n: imageok\n  0xEA 0xAC 0xAA 0xEA\n: imagefalse\n  0xCE 0xAA 0xAA 0xAE\n\n: flag-ok\n  0b10100000\n  0b11000000\n: characters\n  0b10000000\n: flag-err\n  0b10100000\n  0b01000000\n  0b10100000\n\n# Individual characters, some taken from Corax89' test.\n: im0\n  0xE0 0xA0 0xA0 0xE0\n: im1\n  0xC0 0x40 0x40 0xE0\n: im2\n  0xE0 0x20 0xC0 0xE0\n: im3\n  0xE0 0x60 0x20 0xE0\n: im4\n  0xA0 0xE0 0x20 0x20\n: im5\n  0b11100000\n  0b11000000\n  0b00100000\n  0b11000000\n: im6\n  0xE0 0x80 0xE0 0xE0\n: im7\n  0xE0 0x20 0x20 0x20\n: im8\n  0xE0 0xE0 0xA0 0xE0\n: im9\n  0xE0 0xE0 0x20 0xE0\n: imA\n  0x40 0xA0 0xE0 0xA0\n: imB\n  0b11000000\n  0b11100000\n  0b10100000\n  0b11100000\n: imC\n  0b11100000\n  0b10000000\n  0b10000000\n  0b11100000\n: imD\n  0b11000000\n  0b10100000\n  0b10100000\n  0b11000000\n: imE\n  0xE0 0xC0 0x80 0xE0\n: imF\n  0xE0 0x80 0xC0 0x80\n: imG\n  0b01100000\n  0b10000000\n  0b10100000\n  0b01100000\n: imH\n  0b10100000\n  0b11100000\n  0b10100000\n  0b10100000\n: imI\n  0b11100000\n  0b01000000\n  0b01000000\n  0b11100000\n: imJ\n  0b01100000\n  0b00100000\n  0b00100000\n  0b11000000\n: imK\n  0b10100000\n  0b11000000\n  0b10100000\n  0b10100000\n: imL\n  0b10000000\n  0b10000000\n  0b10000000\n  0b11100000\n: imM\n  0b11100000\n  0b11100000\n  0b10100000\n  0b10100000\n: imN\n  0b11000000\n  0b10100000\n  0b10100000\n  0b10100000\n: imO\n  0b11100000\n  0b10100000\n  0b10100000\n  0b11100000\n: imP\n  0b11000000\n  0b10100000\n  0b11000000\n  0b10000000\n: imQ\n  0b01000000\n  0b10100000\n  0b11100000\n  0b01100000\n: imR\n  0b11000000\n  0b10100000\n  0b11000000\n  0b10100000\n: imS\n  0b01100000\n  0b11000000\n  0b00100000\n  0b11000000\n: imT\n  0b11100000\n  0b01000000\n  0b01000000\n  0b01000000\n: imU\n  0b10100000\n  0b10100000\n  0b10100000\n  0b01100000\n: imV\n  0b10100000\n  0b10100000\n  0b10100000\n  0b01000000\n: imW\n  0b10100000\n  0b10100000\n  0b11100000\n  0b11100000\n: imX\n  0xA0 0x40 0xA0 0xA0\n: imY\n  0b10100000\n  0b10100000\n  0b01000000\n  0b01000000\n: imZ\n  0b11100000\n  0b01100000\n  0b10000000\n  0b11100000\n: imSpace\n  0 0 0 0\n: imDash\n  0b00000000\n  0b11100000\n  0b00000000\n  0b00000000\n: imPeriod\n  0b00000000\n  0b00000000\n  0b00000000\n  0b01000000\n\n: ibm-logo-part1\n  0xFF 0x00 0xFF 0x00 0x3C 0x00 0x3C 0x00 0x3C 0x00 0x3C 0x00 0xFF 0x00 0xFF\n: ibm-logo-part2\n  0xFF 0x00 0xFF 0x00 0x38 0x00 0x3F 0x00 0x3F 0x00 0x38 0x00 0xFF 0x00 0xFF\n: ibm-logo-part3\n  0x80 0x00 0xE0 0x00 0xE0 0x00 0x80 0x00 0x80 0x00 0xE0 0x00 0xE0 0x00 0x80\n: ibm-logo-part4\n  0xF8 0x00 0xFC 0x00 0x3E 0x00 0x3F 0x00 0x3B 0x00 0x39 0x00 0xF8 0x00 0xF8\n: ibm-logo-part5\n  0x03 0x00 0x07 0x00 0x0F 0x00 0xBF 0x00 0xFB 0x00 0xF3 0x00 0xE3 0x00 0x43\n: ibm-logo-part6\n  0xE0 0x00 0xE0 0x00 0x80 0x00 0x80 0x00 0x80 0x00 0x80 0x00 0xE0 0x00 0xE0\n\n: flags-no-carry\n  str \"HAPPY\" 0\n: flags-carry\n  str \"CARRY\" 0\n: flags-other\n  str \"OTHER\" 0\n\n: quirks-menu\n  12 13 :pointer quirks-chip8\n  12 18 :pointer quirks-schip\n  12 23 :pointer quirks-xochip\n\n: quirks-choose\n  str \"PICK PLATFORM\" 0\n: quirks-str-chip8\n  str \"1 CHIP-8\" 0\n: quirks-str-schip\n  str \"2 SCHIP\" 0\n: quirks-str-xochip\n  str \"3 XO-CHIP\" 0\n\n: quirks-vf\n  str \"VF RESET\" 0\n: quirks-mem\n  str \"MEMORY\" 0\n: quirks-disp\n  str \"DISP.WAIT\" 0\n: quirks-clip\n  str \"CLIPPING\" 0\n: quirks-shift\n  str \"SHIFTING\" 0\n: quirks-jump\n  str \"JUMPING\" 0\n\n: quirks-on\n  str \"ON\" 0\n: quirks-off\n  str \"OFF\" 0\n: quirks-inconsistent\n  str \"ERR\" 0\n\n: quirks-values\n  28 12 0 0 1\n: quirks-image\n  0x3C 0x7E 0xFF 0xDB 0xFF 0xDB 0x66 0x3C\n\n: keypad-menu\n  4 13 :pointer keypad-down\n  4 18 :pointer keypad-up\n  4 23 :pointer keypad-getkey\n\n: keypad-choose\n  str \"PICK OPCODE\" 0\n: keypad-str-key-down\n  str \"1 EX9E DOWN\" 0\n: keypad-str-key-up\n  str \"2 EXA1 UP\" 0\n: keypad-str-getkey\n  str \"3 FX0A GETKEY\" 0\n\n: keypad-str-press-key\n  str \"PRESS ANY KEY\" 0\n: keypad-str-good\n  str \"ALL GOOD\" 0\n: keypad-str-no-halt\n  str \"NOT HALTING\" 0\n: keypad-str-no-release-wait\n  str \"NOT RELEASED\" 0\n\n: keypad-initial-values\n  0 0 0 0 0 0 0 0\n  0 0 0 0 0 0 0 0\n\n: keypad-row1\n  str \"1 2 3 C\" 0\n: keypad-row2\n  str \"4 5 6 D\" 0\n: keypad-row3\n  str \"7 8 9 E\" 0\n: keypad-row4\n  str \"A 0 B F\" 0\n\n: keypad-coordinates\n  24 23 # 0\n  16 2  # 1\n  24 2  # 2\n  32 2  # 3\n  16 9  # 4\n  24 9  # 5\n  32 9  # 6\n  16 16 # 7\n  24 16 # 8\n  32 16 # 9\n  16 23 # A\n  32 23 # B\n  40 2  # C\n  40 9  # D\n  40 16 # E\n  40 23 # F\n\n: keypad-cursor\n  0b11111110\n  0b11111110\n  0b11111110\n  0b11111110\n  0b11111110\n  0b11111110\n\n# Jump quirk targets:\n:org 0xE87\n  # We jump here when using v0 in the `jump0` quirks test\n  v5 := 0\n  jump quirks-resume\n:org 0xE8B\n  # We jump here when using vE in the `jump0` quirks test\n  v5 := 1\n  jump quirks-resume","options":{"tickrate":20,"fillColor":"#FFCC00","fillColor2":"#FF6600","blendColor":"#662200","backgroundColor":"#996600","buzzColor":"#FFAA00","quietColor":"#000000","shiftQuirks":false,"loadStoreQuirks":false,"vfOrderQuirks":false,"clipQuirks":true,"jumpQuirks":false,"logicQuirks":true,"vBlankQuirks":true,"screenRotation":0,"maxSize":3216,"touchInputMode":"vip","fontStyle":"octo","displayScale":"6"},"rom":[0,224,97,1,96,8,171,12,208,31,96,16,171,27,208,31,96,24,171,42,208,31,96,32,171,57,208,31,96,40,171,72,208,31,96,48,171,87,208,31,97,16,96,8,171,102,208,31,96,16,171,117,208,31,96,24,171,132,208,31,96,32,171,147,208,31,96,40,171,162,208,31,96,48,171,177,208,31,18,80,161,255,240,101,64,1,19,180,64,2,19,234,64,3,21,176,64,4,23,200,64,5,26,32,64,9,18,128,18,124,96,0,224,161,18,112,112,1,64,16,0,238,18,112,240,10,34,110,0,224,109,10,110,1,171,229,35,68,109,14,110,7,171,241,35,68,109,14,110,12,171,252,35,68,109,14,110,17,172,6,35,68,109,14,110,22,172,14,35,68,109,14,110,27,172,23,35,68,96,171,97,209,98,4,101,0,162,202,241,85,163,42,241,85,18,202,67,1,208,18,34,110,0,0,245,30,245,30,245,30,245,30,241,101,99,0,243,21,244,7,52,0,18,236,172,32,208,18,100,10,244,21,100,1,131,67,100,14,228,158,18,250,69,0,18,250,117,255,18,196,100,15,228,158,19,8,149,32,19,8,117,1,18,196,134,80,100,10,228,161,19,40,100,0,114,1,116,1,228,158,19,32,134,64,118,255,19,40,84,32,19,20,114,255,18,218,34,110,0,0,246,30,246,30,246,30,246,30,100,2,244,30,241,101,100,16,128,65,163,66,241,85,0,0,252,101,35,170,65,0,0,238,128,16,35,170,66,0,0,238,128,32,35,170,67,0,0,238,128,48,35,170,68,0,0,238,128,64,35,170,69,0,0,238,128,80,35,170,70,0,0,238,128,96,35,170,71,0,0,238,128,112,35,170,72,0,0,238,128,128,35,170,73,0,0,238,128,144,35,170,74,0,0,238,128,160,35,170,75,0,0,238,128,176,35,170,76,0,0,238,128,192,35,170,0,238,172,44,240,30,221,228,125,4,0,238,0,224,172,204,96,12,97,8,208,31,112,9,172,219,208,31,172,234,112,8,208,31,112,4,172,249,208,31,112,8,173,8,208,31,112,8,173,23,208,31,18,124,172,34,218,180,0,238,172,34,218,180,18,124,0,224,104,1,105,5,106,10,107,1,101,42,102,43,172,60,216,180,172,180,217,180,172,34,54,43,172,38,218,180,107,6,172,64,216,180,172,180,217,180,172,38,69,42,172,34,218,180,107,11,172,68,216,180,172,180,217,180,172,38,85,96,172,34,218,180,107,16,172,76,216,180,172,180,217,180,172,38,118,255,70,42,172,34,218,180,107,21,172,84,216,180,172,180,217,180,172,38,149,96,172,34,218,180,107,26,172,56,216,180,172,180,217,180,35,222,104,24,105,28,106,33,107,1,172,48,216,180,172,104,217,180,172,34,218,180,107,6,172,80,216,180,172,48,217,180,172,38,135,80,71,42,172,34,218,180,107,11,172,80,216,180,172,52,217,180,172,38,103,42,135,177,71,43,172,34,218,180,107,16,172,80,216,180,172,56,217,180,172,38,102,120,103,31,135,98,71,24,172,34,218,180,107,21,172,80,216,180,172,60,217,180,172,38,102,120,103,31,135,99,71,103,172,34,218,180,107,26,172,80,216,180,172,64,217,180,172,38,102,140,103,140,135,100,71,24,172,34,218,180,104,47,105,51,106,56,107,1,172,80,216,180,172,68,217,180,172,38,102,140,103,120,135,101,71,236,172,34,218,180,107,6,172,80,216,180,172,104,217,180,172,38,102,224,134,110,70,192,172,34,218,180,107,11,172,80,216,180,172,72,217,180,172,38,102,15,134,102,70,7,172,34,218,180,107,16,172,108,216,180,172,68,217,180,171,192,96,0,97,48,241,85,171,193,240,101,172,38,64,48,172,34,218,180,107,21,172,108,216,180,172,60,217,180,171,192,102,137,246,51,242,101,172,34,48,1,172,38,49,3,172,38,50,7,172,38,218,180,107,26,172,52,216,180,172,180,217,180,19,228,172,48,142,208,111,240,142,242,142,230,142,230,254,30,218,180,122,4,172,48,142,208,111,15,142,242,142,238,142,238,254,30,218,180,122,5,0,238,172,45,146,192,172,42,123,1,218,179,122,4,123,255,0,238,0,224,109,0,110,0,173,38,35,68,106,22,107,0,96,50,97,15,109,129,37,122,99,15,111,20,131,241,111,0,130,0,130,17,142,240,108,63,37,160,130,224,108,0,37,160,130,48,108,31,37,160,122,1,109,130,37,122,99,15,111,20,131,242,111,0,130,0,130,18,142,240,108,2,37,160,130,224,108,0,37,160,130,48,108,4,37,160,122,1,123,5,106,0,109,131,37,122,99,15,111,20,131,243,111,0,130,0,130,19,142,240,108,61,37,160,130,224,108,0,37,160,130,48,108,27,37,160,122,1,109,132,37,122,99,15,111,20,131,244,130,0,130,20,142,240,108,65,37,160,130,224,108,0,37,160,130,48,108,35,37,160,122,1,109,133,37,122,99,20,111,15,131,245,130,0,130,21,142,240,108,35,37,160,130,224,108,1,37,160,130,48,108,5,37,160,122,1,123,5,106,0,109,134,37,122,143,0,143,246,131,240,130,0,130,38,142,240,108,25,37,160,130,224,108,0,37,160,130,48,108,0,37,160,122,1,109,135,37,122,99,15,111,20,131,247,130,16,130,7,142,240,108,35,37,160,130,224,108,1,37,160,130,48,108,5,37,160,122,1,109,142,37,122,143,0,143,254,131,240,130,0,130,46,142,240,108,100,37,160,130,224,108,0,37,160,130,48,108,0,37,160,122,1,109,0,110,16,173,44,35,68,106,22,107,16,96,200,97,100,109,132,37,122,99,200,111,100,131,244,130,0,130,20,142,240,108,44,37,160,130,224,108,1,37,160,130,48,108,44,37,160,122,1,109,133,37,122,99,15,111,20,131,245,130,16,130,5,142,240,108,156,37,160,130,224,108,0,37,160,130,48,108,251,37,160,122,1,123,5,106,0,109,134,37,122,111,7,143,246,131,240,98,3,130,38,142,240,108,1,37,160,130,224,108,1,37,160,130,48,108,1,37,160,122,1,109,135,37,122,99,20,111,15,131,247,130,0,130,23,142,240,108,156,37,160,130,224,108,0,37,160,130,48,108,251,37,160,122,1,109,142,37,122,143,0,143,254,131,240,130,0,130,46,142,240,108,144,37,160,130,224,108,1,37,160,130,48,108,1,37,160,122,1,109,0,110,27,173,50,35,68,106,22,107,27,109,254,37,122,171,192,97,16,241,30,96,170,240,85,171,208,240,101,122,4,130,0,108,170,37,160,122,9,18,124,0,224,161,254,240,101,64,1,24,2,64,2,24,10,64,3,24,18,109,6,110,3,173,68,35,68,109,16,110,12,173,82,35,68,109,16,110,17,173,91,35,68,109,16,110,22,173,99,35,68,96,173,97,56,98,2,18,184,171,192,96,1,240,85,24,24,171,192,96,2,240,85,24,24,171,192,96,3,240,85,34,110,0,224,96,120,240,21,173,172,244,101,173,177,101,32,208,24,117,255,53,0,24,40,130,68,131,244,254,7,62,0,24,38,110,128,130,38,131,54,79,1,130,225,96,1,51,0,96,0,50,2,96,0,171,193,240,85,0,224,174,117,96,28,97,29,208,22,96,22,97,2,208,18,133,240,96,34,208,18,134,240,0,224,174,117,96,61,97,5,208,22,96,3,97,4,208,18,135,240,97,10,208,18,136,240,0,224,96,110,97,50,208,22,96,40,97,17,208,18,137,240,96,52,208,18,137,244,97,23,208,18,137,244,96,40,208,18,137,244,96,0,69,0,96,1,85,96,96,2,85,112,96,2,85,128,96,2,57,4,96,2,171,194,240,85,0,224,109,1,110,1,173,109,35,68,101,0,111,15,128,2,79,0,101,1,102,0,111,15,128,1,79,0,102,1,103,0,111,15,128,3,79,0,103,1,171,192,240,101,172,45,48,1,24,246,69,1,172,42,24,250,69,0,172,42,106,59,107,2,218,179,173,164,69,1,173,161,85,96,173,168,85,112,173,168,109,44,110,1,35,68,109,1,110,6,173,118,35,68,96,5,171,208,240,85,240,101,133,0,171,192,240,101,172,45,48,2,25,54,69,5,172,42,25,58,53,5,172,42,106,59,107,7,218,179,173,161,69,5,173,164,109,44,110,6,35,68,109,1,110,11,173,125,35,68,171,192,241,101,172,45,48,1,25,100,65,1,172,42,25,104,65,0,172,42,106,59,107,12,218,179,173,164,65,1,173,161,109,44,110,11,35,68,109,1,110,16,173,135,35,68,171,192,242,101,172,45,48,3,25,146,66,0,172,42,25,150,66,1,172,42,106,59,107,17,218,179,173,164,66,1,173,161,66,2,173,168,109,44,110,16,35,68,109,1,110,21,173,144,35,68,101,0,102,8,103,0,104,32,133,110,135,134,171,192,240,101,172,45,48,2,25,208,69,0,172,42,25,212,53,0,172,42,106,59,107,22,218,179,173,164,69,0,173,161,85,112,173,168,109,44,110,21,35,68,109,1,110,26,173,153,35,68,96,135,110,139,190,0,171,192,240,101,172,45,48,2,26,8,53,0,172,42,26,12,69,0,172,42,106,59,107,27,218,179,173,164,69,1,173,161,109,44,110,26,35,68,18,124,0,224,161,254,240,101,64,1,26,90,64,2,26,94,64,3,26,196,109,10,110,3,173,197,35,68,109,8,110,12,173,209,35,68,109,8,110,17,173,221,35,68,109,8,110,22,173,231,35,68,96,173,97,185,98,2,18,184,97,158,26,96,97,161,96,238,170,164,241,85,0,224,174,37,255,101,171,192,255,85,109,18,110,3,174,53,35,68,109,18,110,10,174,61,35,68,109,18,110,17,174,69,35,68,109,18,110,24,174,77,35,68,110,0,42,156,126,1,78,16,110,0,26,146,171,192,254,30,240,101,98,1,238,161,98,0,144,32,26,194,128,224,128,14,174,85,240,30,241,101,174,117,208,22,171,192,254,30,128,32,240,85,0,238,0,224,109,6,110,13,173,245,35,68,96,3,240,21,240,10,241,7,49,0,26,242,224,161,26,248,0,224,172,42,96,30,97,9,208,19,109,16,110,17,174,3,35,68,18,124,109,10,174,12,26,252,109,8,174,24,0,224,110,17,35,68,172,45,96,30,97,9,208,19,18,124,15,2,2,2,2,2,0,0,31,63,113,224,229,224,232,160,13,42,40,40,40,0,0,24,184,184,56,56,63,191,0,25,165,189,161,157,0,0,12,29,29,1,13,29,157,1,199,41,41,41,39,0,0,248,252,206,198,198,198,198,0,73,74,73,72,59,0,0,0,1,3,3,3,1,240,48,144,0,0,128,0,0,0,254,199,131,131,131,198,252,231,224,224,224,224,113,63,31,0,0,7,2,2,2,2,57,56,56,56,56,184,184,56,0,0,49,74,121,64,59,221,221,221,221,221,221,221,221,0,0,160,56,32,160,24,206,252,248,192,192,202,202,196,0,0,48,68,36,20,99,241,3,7,199,39,71,131,225,0,0,40,142,168,168,166,206,135,3,3,3,135,254,252,0,0,96,144,240,128,112,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,10,8,3,180,10,13,3,234,10,18,5,176,10,23,7,200,10,28,10,32,104,76,52,84,148,44,148,120,60,116,120,0,8,148,76,48,92,148,88,100,68,100,0,12,148,52,100,112,44,136,36,40,0,16,148,64,88,44,68,116,0,20,148,108,124,76,112,84,116,0,24,148,84,60,140,104,44,56,0,192,192,234,172,170,234,206,170,170,174,160,192,128,160,64,160,224,160,160,224,192,64,64,224,224,32,192,224,224,96,32,224,160,224,32,32,224,192,32,192,224,128,224,224,224,32,32,32,224,224,160,224,224,224,32,224,64,160,224,160,192,224,160,224,224,128,128,224,192,160,160,192,224,192,128,224,224,128,192,128,96,128,160,96,160,224,160,160,224,64,64,224,96,32,32,192,160,192,160,160,128,128,128,224,224,224,160,160,192,160,160,160,224,160,160,224,192,160,192,128,64,160,224,96,192,160,192,160,96,192,32,192,224,64,64,64,160,160,160,96,160,160,160,64,160,160,224,224,160,64,160,160,160,160,64,64,224,96,128,224,0,0,0,0,0,224,0,0,0,0,0,64,255,0,255,0,60,0,60,0,60,0,60,0,255,0,255,255,0,255,0,56,0,63,0,63,0,56,0,255,0,255,128,0,224,0,224,0,128,0,128,0,224,0,224,0,128,248,0,252,0,62,0,63,0,59,0,57,0,248,0,248,3,0,7,0,15,0,191,0,251,0,243,0,227,0,67,224,0,224,0,128,0,128,0,128,0,128,0,224,0,224,72,44,104,104,140,0,52,44,112,112,140,0,100,120,72,60,112,0,12,13,8,2,12,18,8,10,12,23,8,18,104,76,52,84,148,104,88,44,120,64,100,112,92,0,8,148,52,72,76,104,152,36,0,12,148,116,52,72,76,104,0,16,148,136,100,152,52,72,76,104,0,128,64,148,112,60,116,60,120,0,92,60,92,100,112,140,0,56,76,116,104,156,132,44,76,120,0,52,88,76,104,104,76,96,68,0,116,72,76,64,120,76,96,68,0,80,124,92,104,76,96,68,0,100,96,0,100,64,64,0,60,112,112,0,28,12,0,0,1,60,126,255,219,255,219,102,60,4,13,10,90,4,18,10,94,4,23,10,196,104,76,52,84,148,100,104,52,100,56,60,0,8,148,60,136,40,60,148,56,100,132,96,0,12,148,60,136,44,8,148,124,104,0,16,148,64,136,4,44,148,68,60,120,84,60,140,0,104,112,60,116,116,148,44,96,140,148,84,60,140,0,44,88,88,148,68,100,100,56,0,96,100,120,148,72,44,88,120,76,96,68,0,96,100,120,148,112,60,88,60,44,116,60,56,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,148,12,148,16,148,52,0,20,148,24,148,28,148,56,0,32,148,36,148,40,148,60,0,44,148,4,148,48,148,64,0,24,23,16,2,24,2,32,2,16,9,24,9,32,9,16,16,24,16,32,16,16,23,32,23,40,2,40,9,40,16,40,23,254,254,254,254,254,254,0,0,0,0,0,0,0,0,0,0,0,0,101,0,25,248,101,1,25,248]}</script>
+<script>data={"program":"# CHIP-8 Test Suite -- Timendus, 2022\n# https://github.com/Timendus/chip8-test-suite\n\n# The program begins from 0x200 with the CHIP-8 logo image,\n# which contains the `main` label:\n\n# CHIP-8 logo ROM by Timendus, published here before:\n# https://github.com/Timendus/chip-8/blob/master/octo/CHIP-8%20logo.8o\n\n# 132 bytes, 20 cycles to show \"CHIP-8\" on the screen\n#\n# This ROM is simpler than the IBM logo in two ways:\n#  a) It does not use the addition instruction\n#  b) It only renders aligned sprites (all coordinates are multiples of 8)\n#\n# Uses only these five instructions:\n#  * Clear the screen\n#  * Load normal register with immediate value\n#  * Load i register with immediate value\n#  * Draw sprite to screen (only aligned)\n#  * Jump (at the end, so kinda optional)\n\n:macro show X address {\n  v0 := X\n  i := address\n  sprite v0 v1 15\n}\n\n: main\n  clear\n\n  v1 := 1\n  show  8 splash-0-0\n  show 16 splash-1-0\n  show 24 splash-2-0\n  show 32 splash-3-0\n  show 40 splash-4-0\n  show 48 splash-5-0\n\n  v1 := 16\n  show  8 splash-0-1\n  show 16 splash-1-1\n  show 24 splash-2-1\n  show 32 splash-3-1\n  show 40 splash-4-1\n  show 48 splash-5-1\n\n  jump select-test\n\n\n# After that, if the user auto-started a test, run it:\n\n: select-test\n  i := 0x1FF\n  load v0\n  if v0 == 1 then jump ibm-logo\n  if v0 == 2 then jump corax89\n  if v0 == 3 then jump flags-test\n  if v0 == 4 then jump quirks-test\n  if v0 == 5 then jump keypad-test\n  if v0 == 9 then jump menu\n  jump menu-after-keypress\n\n# Include all support code:\n\n:stringmode str \"$0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ -.\" {\n  :byte { 4 * VALUE }\n}\n\n:macro text X Y STR {\n  vD := X\n  vE := Y\n  i := STR\n  drawText\n}\n\n:alias x vA\n:alias y vB\n\n: waitKeyRelease\n  v0 := 0\n: -\n  if v0 key then jump -\n  v0 += 1\n  if v0 == 16 then return\n  jump -\n\n# A cute little menu to select a test\n\n: menu-after-keypress\n  v0 := key\n  waitKeyRelease\n: menu\n  clear\n  text 10  1 menu-header\n  text 14  7 menu-ibm\n  text 14 12 menu-corax\n  text 14 17 menu-flags\n  text 14 22 menu-quirks\n  text 14 27 menu-keypad\n\n  :unpack 0xA menu-main\n  v2 := 4\n  #jump menu-start\n\n# Input:\n#  * v0 v1 point to 0xA + menu struct\n#  * v2 holds the length (zero-indexed)\n: menu-start\n  :alias cursorX v0\n  :alias cursorY v1\n  :alias numItems v2\n  :alias showing v3\n  :alias temp v4\n  :alias currentItem v5\n  :alias selectedItem v6\n\n  currentItem := 0\n  i := menu-draw-cursor\n  save v1\n  i := menu-choose-load\n  save v1\n  jump menu-draw-cursor\n: menu-move-cursor\n  if showing == 1 then sprite cursorX cursorY 2 # i should still be correct\n  waitKeyRelease\n: menu-draw-cursor\n  0 0 # i := <menu>\n  i += currentItem\n  i += currentItem\n  i += currentItem\n  i += currentItem\n  load cursorY # and cursorX\n  showing := 0\n  delay := showing\n\n  loop\n    # Blink cursor\n    temp := delay\n    if temp == 0 begin\n      i := menu-cursor\n      sprite cursorX cursorY 2\n      temp := 10\n      delay := temp\n      temp := 1\n      showing ^= temp\n    end\n\n    # Move cursor up\n    temp := 0xE\n    if temp key begin\n      if currentItem != 0 begin\n        currentItem -= 1\n        jump menu-move-cursor\n      end\n    end\n    # Move cursor down\n    temp := 0xF\n    if temp key begin\n      if currentItem != numItems begin\n        currentItem += 1\n        jump menu-move-cursor\n      end\n    end\n    # Start test under cursor\n    selectedItem := currentItem\n    temp := 0xA\n    if temp key then jump menu-choose\n\n    # Use numbers to jump to tests directly\n    temp := 0\n    numItems += 1\n    loop\n      temp += 1\n      if temp key begin\n        selectedItem := temp\n        selectedItem -= 1\n        jump menu-choose\n      end\n    if temp != numItems then again\n    numItems -= 1\n  again\n\n: menu-choose\n  waitKeyRelease\n: menu-choose-load\n  0 0 # i := <menu>\n  i += selectedItem\n  i += selectedItem\n  i += selectedItem\n  i += selectedItem\n  temp := 2\n  i += temp\n  load v1\n  temp := 0x10\n  v0 |= temp\n  i := menu-choose-jump\n  save v1\n: menu-choose-jump\n  0 0 # jump <item>\n\n# Font rendering code and character data\n# Kept this very simplistic and fast\n\n:macro drawCharacter REG {\n  if REG == 0 then return\n  v0 := REG\n  drawChar\n}\n\n: drawText\n  load vC\n  drawChar\n  drawCharacter v1\n  drawCharacter v2\n  drawCharacter v3\n  drawCharacter v4\n  drawCharacter v5\n  drawCharacter v6\n  drawCharacter v7\n  drawCharacter v8\n  drawCharacter v9\n  drawCharacter vA\n  drawCharacter vB\n  drawCharacter vC\n  return\n\n: drawChar\n  i := characters\n  i += v0\n  sprite vD vE 4\n  vD += 4\n  return\n\n\n# Include all available tests:\n\n# Disassembly of the famous \"IBM logo\" program, published here before:\n# https://github.com/Timendus/chip-8/blob/master/octo/IBM%20logo.8o\n\n# Annotated and converted to Octo mnemonics by Timendus, in the hope that it\n# will be useful to people trying to debug their CHIP-8 interpreters\n#\n# Original \"IBM logo\" MD5 hash:       2dbace8066709ac9a264d23281820d32\n# MD5 hash of binary from this code:  2dbace8066709ac9a264d23281820d32\n\n: ibm-logo\n  clear                       # Address 512 / 0x200\n\n  i := ibm-logo-part1         # Address 514 / 0x202\n  v0 := 12                    # Address 516 / 0x204\n  v1 := 8\n  sprite v0 v1 15             # Address 520 / 0x208\n\n  v0 += 9                     # Address 522 / 0x20A\n  i := ibm-logo-part2\n  sprite v0 v1 15\n\n  i := ibm-logo-part3         # Interesting mixup here, swapping the operations\n  v0 += 8\n  sprite v0 v1 15\n\n  v0 += 4\n  i := ibm-logo-part4\n  sprite v0 v1 15\n\n  v0 += 8\n  i := ibm-logo-part5\n  sprite v0 v1 15\n\n  v0 += 8\n  i := ibm-logo-part6\n  sprite v0 v1 15\n\n  jump menu-after-keypress    # Address 552 / 0x228\n\n# Corax89's chip8-test-rom, published here before:\n# https://github.com/corax89/chip8-test-rom\n\n# MIT License\n#\n# Copyright (c) 2019 corax89\n#\n# Permission is hereby granted, free of charge, to any person obtaining a copy\n# of this software and associated documentation files (the \"Software\"), to deal\n# in the Software without restriction, including without limitation the rights\n# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n# copies of the Software, and to permit persons to whom the Software is\n# furnished to do so, subject to the following conditions:\n#\n# The above copyright notice and this permission notice shall be included in all\n# copies or substantial portions of the Software.\n#\n# THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE\n# SOFTWARE.\n\n:alias x0 v8\n:alias x1 v9\n:alias x2 vA\n:alias y\tvB\n\n:macro drawop A B {\n  i := A\n  sprite x0 y 4\n  i := B\n  sprite x1 y 4\n}\n\n: test2X\n  #test 2x\n  i := imageok\n  sprite x2 y 4\n  return\n\n: test1x\n  i := imageok\n  sprite x2 y 4\n  jump menu-after-keypress\n\n: corax89\n  clear\n  x0 := 1\n  x1 := 5\n  x2 := 10\n  y := 1\n  v5 := 42\n  v6 := 43\n\n  #test 3x\n  drawop im3 imX\n  i := imageok\n  if v6 != 43 then i := imagefalse\n  sprite x2 y 4\n\n  #test 4x\n  y := 6\n  drawop im4 imX\n  i := imagefalse\n  if v5 == 42 then i := imageok\n  sprite x2 y 4\n\n  #test 5x\n  y := 11\n  drawop im5 imX\n  i := imagefalse\n  if v5 != v6 then i := imageok\n  sprite x2 y 4\n\n  #test 7x\n  y := 16\n  drawop im7 imX\n  i := imagefalse\n  v6 += 255\n  if v6 == 42 then i := imageok\n  sprite x2 y 4\n\n  #test 9x\n  y := 21\n  drawop im9 imX\n  i := imagefalse\n  if v5 == v6 then i := imageok\n  sprite x2 y 4\n\n  #test \"AX\"\n  # Note by Timendus: I think this really tests 2NNN, not ANNN, so I changed the\n  # displayed label on this to not confuse users.\n  # See PR: https://github.com/corax89/chip8-test-rom/pull/9\n  y := 26\n  drawop im2 imX\n  test2X\n\n  #test 0E\n  x0 := 24\n  x1 := 28\n  x2 := 33\n  y := 1\n  drawop im0 imE\n  i := imageok\n  sprite x2 y 4\n\n  #test 8xy0\n  y := 6\n  drawop im8 im0\n  i := imagefalse\n  v7 := v5\n  if v7 == 42 then i := imageok\n  sprite x2 y 4\n\n  #test 8xy1\n  y := 11\n  drawop im8 im1\n  i := imagefalse\n  v7 := 42\n  v7 |= y\n  if v7 == 43 then i := imageok\n  sprite x2 y 4\n\n  #test 8xy2\n  y := 16\n  drawop im8 im2\n  i := imagefalse\n  v6 := 120\n  v7 := 31\n  v7 &= v6\n  if v7 == 24 then i := imageok\n  sprite x2 y 4\n\n  #test 8xy3\n  y := 21\n  drawop im8 im3\n  i := imagefalse\n  v6 := 120\n  v7 := 31\n  v7 ^= v6\n  if v7 == 103 then i := imageok\n  sprite x2 y 4\n\n  #test 8xy4\n  y := 26\n  drawop im8 im4\n  i := imagefalse\n  v6 := 140\n  v7 := 140\n  v7 += v6\n  if v7 == 24 then i := imageok\n  sprite x2 y 4\n\n  #test 8xy5\n  x0 := 47\n  x1 := 51\n  x2 := 56\n  y  := 1\n  drawop im8 im5\n  i := imagefalse\n  v6 := 140\n  v7 := 120\n  v7 -= v6\n  if v7 == 236 then i := imageok\n  sprite x2 y 4\n\n  #test \"8xy6\"\n  # Note by Timendus: This should be 8XYE, changed the label here too.\n  # See PR: https://github.com/corax89/chip8-test-rom/pull/7\n  y := 6\n  drawop im8 imE\n  i := imagefalse\n  v6 := 224\n  v6 <<= v6\n  if v6 == 192 then i := imageok\n  sprite x2 y 4\n\n  #test \"8xyE\"\n  # Note by Timendus: This should be 8XY6, changed the label here too.\n  # See PR: https://github.com/corax89/chip8-test-rom/pull/7\n  y := 11\n  drawop im8 im6\n  i := imagefalse\n  v6 := 15\n  v6 >>= v6\n  if v6 == 7 then i := imageok\n  sprite x2 y 4\n\n  #test Fx55,Fx65\n  y := 16\n  drawop imF im5\n  i := scratchpad\n  v0 := 0\n  v1 := 48\n  save v1\n  i := scratchpad-plus-1\n  load v0\n  i := imagefalse\n  if v0 == 48 then i := imageok\n  sprite x2 y 4\n\n  #test Fx33\n  y := 21\n  drawop imF im3\n  i := scratchpad\n  v6 := 137\n  bcd v6\n  load v2\n  i := imageok\n  if v0 != 1 then i := imagefalse\n  if v1 != 3 then i := imagefalse\n  if v2 != 7 then i := imagefalse\n  sprite x2 y 4\n\n  #test 1x\n  y := 26\n  drawop im1 imX\n  jump test1x\n\n# Image data is in text-rendering.8o, as part of the font\n\n# Flags test\n\n# This is a visual adaptation of the math tests I wrote for Silicon8\n# (https://github.com/Timendus/silicon8/tree/main/tests)\n\n:macro opcode OPC {\n  vD := OPC\n  flags-draw-opcode\n}\n\n: flags-draw-opcode\n  i := im0\n  vE := vD\n  vF := 0xF0\n  vE &= vF\n  vE >>= vE\n  vE >>= vE\n  i += vE\n  sprite x y 4\n  x += 4\n  i := im0\n  vE := vD\n  vF := 0x0F\n  vE &= vF\n  vE <<= vE\n  vE <<= vE\n  i += vE\n  sprite x y 4\n  x += 5\n  return\n\n:macro expect-v0 V0VAL {\n  x += 4\n  v2 := v0\n  vC := V0VAL\n  flags-draw-result\n  x += 9\n}\n\n:macro expect-v2-vf-v3 V2VAL VFVAL V3VAL {\n  vE := vF\n  vC := V2VAL\n  flags-draw-result\n  v2 := vE\n  vC := VFVAL\n  flags-draw-result\n  v2 := v3\n  vC := V3VAL\n  flags-draw-result\n  x += 1\n}\n\n: flags-draw-result\n  i := flag-err\n  if v2 == vC then i := flag-ok\n  y += 1\n  sprite x y 3\n  x += 4\n  y -= 1\n  return\n\n: flags-test\n  clear\n\n  ## Without complications\n\n  text 0 0 flags-no-carry\n  x := 22\n  y := 0\n\n  v0 := 50\n  v1 := 15\n\n  # OR\n  opcode 0x81\n  v3 := 15\n  vF := 20\n  v3 |= vF # 31 (0x1F)\n  vF := 0\n  v2 := v0\n  v2 |= v1 # 63 (0x3F)\n  expect-v2-vf-v3 63 0 31\n\n  # AND\n  opcode 0x82\n  v3 := 15\n  vF := 20\n  v3 &= vF # 4 (0x04)\n  vF := 0\n  v2 := v0\n  v2 &= v1 # 2 (0x02)\n  expect-v2-vf-v3 2 0 4\n\n  y += 5\n  x := 0\n\n  # XOR\n  opcode 0x83\n  v3 := 15\n  vF := 20\n  v3 ^= vF # 27 (0x1B)\n  vF := 0\n  v2 := v0\n  v2 ^= v1 # 61 (0x3D)\n  expect-v2-vf-v3 61 0 27\n\n  # Addition (no overflow)\n  opcode 0x84\n  v3 := 15\n  vF := 20\n  v3 += vF # 35 (0x23)\n  v2 := v0\n  v2 += v1 # 65 (0x41)\n  expect-v2-vf-v3 65 0 35\n\n  # Subtraction in one direction (no carry)\n  opcode 0x85\n  v3 := 20\n  vF := 15\n  v3 -= vF # 5 (0x05)\n  v2 := v0\n  v2 -= v1 # 35 (0x23)\n  expect-v2-vf-v3 35 1 5\n\n  y += 5\n  x := 0\n\n  # Shift right (no LSB)\n  opcode 0x86\n  vF := v0\n  vF >>= vF # 25 (0x19), but should be overwritten by flag, so 0\n  v3 := vF\n  v2 := v0\n  v2 >>= v2 # 25 (0x19)\n  expect-v2-vf-v3 25 0 0\n\n  # Subtraction in the other direction (no carry)\n  opcode 0x87\n  v3 := 15\n  vF := 20\n  v3 =- vF # 5 (0x05)\n  v2 := v1\n  v2 =- v0 # 35 (0x23)\n  expect-v2-vf-v3 35 1 5\n\n  # Shift left (no MSB)\n  opcode 0x8E\n  vF := v0\n  vF <<= vF # 100 (0x64), but should be overwritten by flag, so 0\n  v3 := vF\n  v2 := v0\n  v2 <<= v2 # 100 (0x64)\n  expect-v2-vf-v3 100 0 0\n\n\n  # With complications\n\n  text 0 16 flags-carry\n  x := 22\n  y := 16\n\n  v0 := 200\n  v1 := 100\n\n  # Addition (with overflow)\n  opcode 0x84\n  v3 := 200\n  vF := 100\n  v3 += vF # 300 (0x2C)\n  v2 := v0\n  v2 += v1 # 300 (0x2C)\n  expect-v2-vf-v3 0x2C 1 0x2C\n\n  # Subtraction in one direction (with carry)\n  opcode 0x85\n  v3 := 15\n  vF := 20\n  v3 -= vF # -5 = 251 (0xFB)\n  v2 := v1\n  v2 -= v0 # 100 - 200 = -100 = 156 (0x9C)\n  expect-v2-vf-v3 0x9C 0 0xFB\n\n  y += 5\n  x := 0\n\n  # Shift right (with LSB)\n  opcode 0x86\n  vF := 27\n  vF >>= vF # 13 (0xD), but should be overwritten by flag, so 1\n  v3 := vF\n  v2 := 27\n  v2 >>= v2 # 13 (0xD)\n  expect-v2-vf-v3 13 1 1\n\n  # Subtraction in the other direction (with carry)\n  opcode 0x87\n  v3 := 20\n  vF := 15\n  v3 =- vF # -5 = 251 (0xFB)\n  v2 := v0\n  v2 =- v1 # 100 - 200 = -100 = 156 (0x9C)\n  expect-v2-vf-v3 0x9C 0 0xFB\n\n  # Shift left (with MSB)\n  opcode 0x8E\n  vF := v0\n  vF <<= vF # 400 (0x90), but should be overwritten by flag, so 1\n  v3 := vF\n  v2 := v0\n  v2 <<= v2 # 400 (0x90)\n  expect-v2-vf-v3 0x90 1 1\n\n  # Addition to i\n\n  text 0 27 flags-other\n  x := 22\n  y := 27\n\n  opcode 0xFE\n  i := scratchpad\n  v1 := 0x10\n  i += v1\n  v0 := 0xAA\n  save v0\n  i := scratchpad-plus-16\n  load v0\n  expect-v0 0xAA\n\n  jump menu-after-keypress\n\n# Quirks test\n\n# This is a visual adaptation of some of the tests I wrote for Silicon8\n# (https://github.com/Timendus/silicon8/tree/main/tests) and some newly written\n# tests for specific quirks.\n\n: quirks-test\n  clear\n  i := 0x1FE\n  load v0\n  if v0 == 1 then jump quirks-chip8\n  if v0 == 2 then jump quirks-schip\n  if v0 == 3 then jump quirks-xochip\n\n  text  6  3 quirks-choose\n  text 16 12 quirks-str-chip8\n  text 16 17 quirks-str-schip\n  text 16 22 quirks-str-xochip\n\n  :unpack 0xA quirks-menu\n  v2 := 2\n  jump menu-start\n\n: quirks-chip8\n  i := scratchpad\n  v0 := 1\n  save v0\n  jump quirks-run-tests\n\n: quirks-schip\n  i := scratchpad\n  v0 := 2\n  save v0\n  jump quirks-run-tests\n\n: quirks-xochip\n  i := scratchpad\n  v0 := 3\n  save v0\n\n: quirks-run-tests\n  waitKeyRelease\n\n  # Determine frames per second for dispQuirk\n  clear\n  i := quirks-values\n  load v4\n  i := quirks-image\n  vF := 120\n  delay := vF\n  loop\n    v5 := 30\n    loop\n      sprite v0 v1 1\n      v5 -= 1\n      if v5 != 0 then\n    again\n    v2 += v4\n    v3 += vF\n    vE := delay\n  if vE != 0 then again\n\n  # We expect the inner loop with 30 `sprite`s to have been able to run four\n  # times in the timespan of 120 interrupts\n  v0 := 1\n  if v3 != 0 then v0 := 0\n  if v2 != 4 then v0 := 0\n  i := scratchpad-plus-1\n  save v0\n\n  # Determine if sprites get clipped vertically\n  clear\n  i := keypad-cursor\n  v0 := 28\n  v1 := 29\n  sprite v0 v1 6\n  v0 := 22\n  v1 := 2\n  sprite v0 v1 2\n  v5 := vF\n  v0 := 34\n  sprite v0 v1 2\n  v6 := vF\n\n  # Determine if sprites get clipped horizontally\n  clear\n  i := keypad-cursor\n  v0 := 61\n  v1 := 5\n  sprite v0 v1 6\n  v0 := 3\n  v1 := 4\n  sprite v0 v1 2\n  v7 := vF\n  v1 := 10\n  sprite v0 v1 2\n  v8 := vF\n\n  # Determine if sprites get wrapped (both directions)\n  clear\n  v0 := 110\n  v1 := 50\n  sprite v0 v1 6 # Should draw at 46,18\n  v0 := 40\n  v1 := 17\n  sprite v0 v1 2\n  v9 := vF\n  v0 := 52\n  sprite v0 v1 2\n  v9 += vF\n  v1 := 23\n  sprite v0 v1 2\n  v9 += vF\n  v0 := 40\n  sprite v0 v1 2\n  v9 += vF\n\n  # Save result\n  v0 := 0\n  # Clipping\n  if v5 == 0 then v0 := 1\n  if v5 != v6 then v0 := 2\n  if v5 != v7 then v0 := 2\n  if v5 != v8 then v0 := 2\n  # Wrapping\n  if v9 != 4 then v0 := 2\n  i := scratchpad-plus-2\n  save v0\n\n  # Present results\n\n  clear\n\n  # vfQuirk\n  # When using &, | or ^, the flags register always gets reset to 0\n  text 1 1 quirks-vf\n  v5 := 0\n  vF := 15\n  v0 &= v0\n  if vF == 0 then v5 := 1\n  v6 := 0\n  vF := 15\n  v0 |= v0\n  if vF == 0 then v6 := 1\n  v7 := 0\n  vF := 15\n  v0 ^= v0\n  if vF == 0 then v7 := 1\n  i := scratchpad\n  load v0\n  i := flag-err\n  if v0 == 1 begin\n    # Selected CHIP-8\n    if v5 == 1 then i := flag-ok\n  else\n    # Selected SCHIP or XO-CHIP\n    if v5 == 0 then i := flag-ok\n  end\n  x := 59\n  y := 2\n  sprite x y 3\n  i := quirks-off\n  if v5 == 1 then i := quirks-on\n  if v5 != v6 then i := quirks-inconsistent\n  if v5 != v7 then i := quirks-inconsistent\n  vD := 44\n  vE := 1\n  drawText\n\n  # memQuirk\n  # When reading or writing memory, i gets incremented\n  text 1 6 quirks-mem\n  v0 := 5\n  i := scratchpad-plus-16\n  save v0\n  load v0\n  v5 := v0\n  i := scratchpad\n  load v0\n  i := flag-err\n  if v0 == 2 begin\n    # Selected SCHIP\n    if v5 == 5 then i := flag-ok\n  else\n    # Selected CHIP-8 or XO-CHIP\n    if v5 != 5 then i := flag-ok\n  end\n  x := 59\n  y := 7\n  sprite x y 3\n  i := quirks-on\n  if v5 == 5 then i := quirks-off\n  vD := 44\n  vE := 6\n  drawText\n\n  # dispQuirk\n  # When drawing a sprite to the screen, the interpreter waits for v-blank\n  text 1 11 quirks-disp\n  i := scratchpad\n  load v1\n  i := flag-err\n  if v0 == 1 begin\n    # Selected CHIP-8\n    if v1 == 1 then i := flag-ok\n  else\n    # Selected SCHIP or XO-CHIP\n    if v1 == 0 then i := flag-ok\n  end\n  x := 59\n  y := 12\n  sprite x y 3\n  i := quirks-off\n  if v1 == 1 then i := quirks-on\n  vD := 44\n  vE := 11\n  drawText\n\n  # clipQuirk\n  # Sprites wrap to the top of the screen\n  text 1 16 quirks-clip\n  i := scratchpad\n  load v2\n  i := flag-err\n  if v0 == 3 begin\n    # Selected XO-CHIP\n    if v2 == 0 then i := flag-ok\n  else\n    # Selected CHIP-8 or SCHIP\n    if v2 == 1 then i := flag-ok\n  end\n  x := 59\n  y := 17\n  sprite x y 3\n  i := quirks-off\n  if v2 == 1 then i := quirks-on\n  if v2 == 2 then i := quirks-inconsistent\n  vD := 44\n  vE := 16\n  drawText\n\n  # shiftQuirk\n  # When shifting a register, the interpreter always shifts register X into\n  # register X (instead of shifting register Y into register X)\n  text 1 21 quirks-shift\n  v5 := 0\n  v6 := 8\n  v7 := 0\n  v8 := 32\n  v5 <<= v6\n  v7 >>= v8\n  i := scratchpad\n  load v0\n  i := flag-err\n  if v0 == 2 begin\n    # Selected SCHIP\n    if v5 == 0 then i := flag-ok\n  else\n    # Selected CHIP-8 or XO-CHIP\n    if v5 != 0 then i := flag-ok\n  end\n  x := 59\n  y := 22\n  sprite x y 3\n  i := quirks-off\n  if v5 == 0 then i := quirks-on\n  if v5 != v7 then i := quirks-inconsistent\n  vD := 44\n  vE := 21\n  drawText\n\n  # jumpQuirk\n  # When using `jump0` (BNNN) the interpreter doesn't jump to NNN + v0 but to\n  # NNN + vX where X is the highest nibble of NNN\n  text 1 26 quirks-jump\n  v0 := 0x87\n  vE := 0x8B\n  jump0 0xE00      # This jumps to one of two routines defined in index.8o (for\n: quirks-resume    # reasons of having to put them in precisely the right spot)\n  i := scratchpad\n  load v0\n  i := flag-err\n  if v0 == 2 begin\n    # Selected SCHIP\n    if v5 != 0 then i := flag-ok\n  else\n    # Selected CHIP-8 or XO-CHIP\n    if v5 == 0 then i := flag-ok\n  end\n  x := 59\n  y := 27\n  sprite x y 3\n  i := quirks-off\n  if v5 == 1 then i := quirks-on\n  vD := 44\n  vE := 26\n  drawText\n\n  jump menu-after-keypress\n\n# Keypad test\n# A fresh new implementation for this test suite\n\n: keypad-test\n  clear\n  i := 0x1FE\n  load v0\n  if v0 == 1 then jump keypad-down\n  if v0 == 2 then jump keypad-up\n  if v0 == 3 then jump keypad-getkey\n\n  text 10  3 keypad-choose\n  text  8 12 keypad-str-key-down\n  text  8 17 keypad-str-key-up\n  text  8 22 keypad-str-getkey\n\n  :unpack 0xA keypad-menu\n  v2 := 2\n  jump menu-start\n\n: keypad-down\n  v1 := 0x9E\n  jump keypad-skip-if-key-test\n: keypad-up\n  v1 := 0xA1\n: keypad-skip-if-key-test\n  v0 := 0xEE\n  i := keypad-opcode\n  save v1\n  clear\n  i := keypad-initial-values\n  load vF\n  i := scratchpad\n  save vF\n  text 18 3 keypad-row1\n  text 18 10 keypad-row2\n  text 18 17 keypad-row3\n  text 18 24 keypad-row4\n  vE := 0\n  loop\n  keypad-pressed\n  vE += 1\n  if vE == 16 then vE := 0\n  again\n\n: keypad-pressed\n  i := scratchpad\n  i += vE\n  load v0\n  v2 := 1\n: keypad-opcode\n  if vE key then v2 := 0\n  if v0 != v2 begin\n    v0 := vE\n    v0 <<= v0\n    i := keypad-coordinates\n    i += v0\n    load v1\n    i := keypad-cursor\n    sprite v0 v1 6\n    i := scratchpad\n    i += vE\n    v0 := v2\n    save v0\n  end\n  return\n\n: keypad-getkey\n  clear\n  text 6 13 keypad-str-press-key\n  v0 := 3\n  delay := v0\n  v0 := key\n  v1 := delay\n  if v1 != 0 then jump keypad-getkey-no-halt\n  if v0 key then jump keypad-getkey-no-release-wait\n  clear\n  i := flag-ok\n  v0 := 30\n  v1 := 9\n  sprite v0 v1 3\n  text 16 17 keypad-str-good\n  jump menu-after-keypress\n\n: keypad-getkey-no-halt\n  vD := 10\n  i := keypad-str-no-halt\n  jump keypad-getkey-error\n: keypad-getkey-no-release-wait\n  vD := 8\n  i := keypad-str-no-release-wait\n: keypad-getkey-error\n  clear\n  vE := 17\n  drawText\n  i := flag-err\n  v0 := 30\n  v1 := 9\n  sprite v0 v1 3\n  jump menu-after-keypress\n\n: splash-0-0\n  0x0f 0x02 0x02 0x02 0x02 0x02 0x00 0x00 0x1f 0x3f 0x71 0xe0 0xe5 0xe0 0xe8\n: splash-1-0\n  0xa0 0x0d 0x2a 0x28 0x28 0x28 0x00 0x00 0x18 0xb8 0xb8 0x38 0x38 0x3f 0xbf\n: splash-2-0\n  0x00 0x19 0xa5 0xbd 0xa1 0x9d 0x00 0x00 0x0c 0x1d 0x1d 0x01 0x0d 0x1d 0x9d\n: splash-3-0\n  0x01 0xc7 0x29 0x29 0x29 0x27 0x00 0x00 0xf8 0xfc 0xce 0xc6 0xc6 0xc6 0xc6\n: splash-4-0\n  0x00 0x49 0x4a 0x49 0x48 0x3b 0x00 0x00 0x00 0x01 0x03 0x03 0x03 0x01 0xf0\n: splash-5-0\n  0x30 0x90 0x00 0x00 0x80 0x00 0x00 0x00 0xfe 0xc7 0x83 0x83 0x83 0xc6 0xfc\n: splash-0-1\n  0xe7 0xe0 0xe0 0xe0 0xe0 0x71 0x3f 0x1f 0x00 0x00 0x07 0x02 0x02 0x02 0x02\n: splash-1-1\n  0x39 0x38 0x38 0x38 0x38 0xb8 0xb8 0x38 0x00 0x00 0x31 0x4a 0x79 0x40 0x3b\n: splash-2-1\n  0xdd 0xdd 0xdd 0xdd 0xdd 0xdd 0xdd 0xdd 0x00 0x00 0xa0 0x38 0x20 0xa0 0x18\n: splash-3-1\n  0xce 0xfc 0xf8 0xc0 0xc0 0xca 0xca 0xc4 0x00 0x00 0x30 0x44 0x24 0x14 0x63\n: splash-4-1\n  0xf1 0x03 0x07 0xc7 0x27 0x47 0x23 0xc1 0x00 0x00 0x28 0x8e 0xa8 0xa8 0xa6\n: splash-5-1\n  0xce 0x87 0x03 0x03 0x03 0x87 0xfe 0xfc 0x00 0x00 0x60 0x90 0xf0 0x80 0x70\n\n\n\n: scratchpad\n  0\n: scratchpad-plus-1\n  0\n: scratchpad-plus-2\n  0 0 0 0 0\n  0 0 0 0 0\n  0 0 0 0\n: scratchpad-plus-16\n  0\n\n\n: menu-main\n  10 8  :pointer ibm-logo\n  10 13 :pointer corax89\n  10 18 :pointer flags-test\n  10 23 :pointer quirks-test\n  10 28 :pointer keypad-test\n\n: menu-header\n  str \"PICK A TEST\" 0\n: menu-ibm\n  str \"1 IBM LOGO\" 0\n: menu-corax\n  str \"2 CORAX89\" 0\n: menu-flags\n  str \"3 FLAGS\" 0\n: menu-quirks\n  str \"4 QUIRKS\" 0\n: menu-keypad\n  str \"5 KEYPAD\" 0\n\n: menu-cursor\n  0b11000000\n  0b11000000\n\n\n# Positive and negative images\n: imageok\n  0xEA 0xAC 0xAA 0xEA\n: imagefalse\n  0xCE 0xAA 0xAA 0xAE\n\n: flag-ok\n  0b10100000\n  0b11000000\n: characters\n  0b10000000\n: flag-err\n  0b10100000\n  0b01000000\n  0b10100000\n\n# Individual characters, some taken from Corax89' test.\n: im0\n  0xE0 0xA0 0xA0 0xE0\n: im1\n  0xC0 0x40 0x40 0xE0\n: im2\n  0xE0 0x20 0xC0 0xE0\n: im3\n  0xE0 0x60 0x20 0xE0\n: im4\n  0xA0 0xE0 0x20 0x20\n: im5\n  0b11100000\n  0b11000000\n  0b00100000\n  0b11000000\n: im6\n  0xE0 0x80 0xE0 0xE0\n: im7\n  0xE0 0x20 0x20 0x20\n: im8\n  0xE0 0xE0 0xA0 0xE0\n: im9\n  0xE0 0xE0 0x20 0xE0\n: imA\n  0x40 0xA0 0xE0 0xA0\n: imB\n  0b11000000\n  0b11100000\n  0b10100000\n  0b11100000\n: imC\n  0b11100000\n  0b10000000\n  0b10000000\n  0b11100000\n: imD\n  0b11000000\n  0b10100000\n  0b10100000\n  0b11000000\n: imE\n  0xE0 0xC0 0x80 0xE0\n: imF\n  0xE0 0x80 0xC0 0x80\n: imG\n  0b01100000\n  0b10000000\n  0b10100000\n  0b01100000\n: imH\n  0b10100000\n  0b11100000\n  0b10100000\n  0b10100000\n: imI\n  0b11100000\n  0b01000000\n  0b01000000\n  0b11100000\n: imJ\n  0b01100000\n  0b00100000\n  0b00100000\n  0b11000000\n: imK\n  0b10100000\n  0b11000000\n  0b10100000\n  0b10100000\n: imL\n  0b10000000\n  0b10000000\n  0b10000000\n  0b11100000\n: imM\n  0b11100000\n  0b11100000\n  0b10100000\n  0b10100000\n: imN\n  0b11000000\n  0b10100000\n  0b10100000\n  0b10100000\n: imO\n  0b11100000\n  0b10100000\n  0b10100000\n  0b11100000\n: imP\n  0b11000000\n  0b10100000\n  0b11000000\n  0b10000000\n: imQ\n  0b01000000\n  0b10100000\n  0b11100000\n  0b01100000\n: imR\n  0b11000000\n  0b10100000\n  0b11000000\n  0b10100000\n: imS\n  0b01100000\n  0b11000000\n  0b00100000\n  0b11000000\n: imT\n  0b11100000\n  0b01000000\n  0b01000000\n  0b01000000\n: imU\n  0b10100000\n  0b10100000\n  0b10100000\n  0b01100000\n: imV\n  0b10100000\n  0b10100000\n  0b10100000\n  0b01000000\n: imW\n  0b10100000\n  0b10100000\n  0b11100000\n  0b11100000\n: imX\n  0xA0 0x40 0xA0 0xA0\n: imY\n  0b10100000\n  0b10100000\n  0b01000000\n  0b01000000\n: imZ\n  0b11100000\n  0b01100000\n  0b10000000\n  0b11100000\n: imSpace\n  0 0 0 0\n: imDash\n  0b00000000\n  0b11100000\n  0b00000000\n  0b00000000\n: imPeriod\n  0b00000000\n  0b00000000\n  0b00000000\n  0b01000000\n\n\n: ibm-logo-part1\n  0xFF 0x00 0xFF 0x00 0x3C 0x00 0x3C 0x00 0x3C 0x00 0x3C 0x00 0xFF 0x00 0xFF\n: ibm-logo-part2\n  0xFF 0x00 0xFF 0x00 0x38 0x00 0x3F 0x00 0x3F 0x00 0x38 0x00 0xFF 0x00 0xFF\n: ibm-logo-part3\n  0x80 0x00 0xE0 0x00 0xE0 0x00 0x80 0x00 0x80 0x00 0xE0 0x00 0xE0 0x00 0x80\n: ibm-logo-part4\n  0xF8 0x00 0xFC 0x00 0x3E 0x00 0x3F 0x00 0x3B 0x00 0x39 0x00 0xF8 0x00 0xF8\n: ibm-logo-part5\n  0x03 0x00 0x07 0x00 0x0F 0x00 0xBF 0x00 0xFB 0x00 0xF3 0x00 0xE3 0x00 0x43\n: ibm-logo-part6\n  0xE0 0x00 0xE0 0x00 0x80 0x00 0x80 0x00 0x80 0x00 0x80 0x00 0xE0 0x00 0xE0\n\n\n: flags-no-carry\n  str \"HAPPY\" 0\n: flags-carry\n  str \"CARRY\" 0\n: flags-other\n  str \"OTHER\" 0\n\n\n: quirks-menu\n  12 13 :pointer quirks-chip8\n  12 18 :pointer quirks-schip\n  12 23 :pointer quirks-xochip\n\n: quirks-choose\n  str \"PICK PLATFORM\" 0\n: quirks-str-chip8\n  str \"1 CHIP-8\" 0\n: quirks-str-schip\n  str \"2 SCHIP\" 0\n: quirks-str-xochip\n  str \"3 XO-CHIP\" 0\n\n: quirks-vf\n  str \"VF RESET\" 0\n: quirks-mem\n  str \"MEMORY\" 0\n: quirks-disp\n  str \"DISP.WAIT\" 0\n: quirks-clip\n  str \"CLIPPING\" 0\n: quirks-shift\n  str \"SHIFTING\" 0\n: quirks-jump\n  str \"JUMPING\" 0\n\n: quirks-on\n  str \"ON\" 0\n: quirks-off\n  str \"OFF\" 0\n: quirks-inconsistent\n  str \"ERR\" 0\n\n: quirks-values\n  32 12 0 0 1\n: quirks-image\n  0b10000000\n\n\n: keypad-menu\n  4 13 :pointer keypad-down\n  4 18 :pointer keypad-up\n  4 23 :pointer keypad-getkey\n\n: keypad-choose\n  str \"PICK OPCODE\" 0\n: keypad-str-key-down\n  str \"1 EX9E DOWN\" 0\n: keypad-str-key-up\n  str \"2 EXA1 UP\" 0\n: keypad-str-getkey\n  str \"3 FX0A GETKEY\" 0\n\n: keypad-str-press-key\n  str \"PRESS ANY KEY\" 0\n: keypad-str-good\n  str \"ALL GOOD\" 0\n: keypad-str-no-halt\n  str \"NOT HALTING\" 0\n: keypad-str-no-release-wait\n  str \"NOT RELEASED\" 0\n\n: keypad-initial-values\n  0 0 0 0 0 0 0 0\n  0 0 0 0 0 0 0 0\n\n: keypad-row1\n  str \"1 2 3 C\" 0\n: keypad-row2\n  str \"4 5 6 D\" 0\n: keypad-row3\n  str \"7 8 9 E\" 0\n: keypad-row4\n  str \"A 0 B F\" 0\n\n: keypad-coordinates\n  24 23 # 0\n  16 2  # 1\n  24 2  # 2\n  32 2  # 3\n  16 9  # 4\n  24 9  # 5\n  32 9  # 6\n  16 16 # 7\n  24 16 # 8\n  32 16 # 9\n  16 23 # A\n  32 23 # B\n  40 2  # C\n  40 9  # D\n  40 16 # E\n  40 23 # F\n\n: keypad-cursor\n  0b11111110\n  0b11111110\n  0b11111110\n  0b11111110\n  0b11111110\n  0b11111110\n\n\n# Jump quirk targets:\n:org 0xE87\n  # We jump here when using v0 in the `jump0` quirks test\n  v5 := 0\n  jump quirks-resume\n:org 0xE8B\n  # We jump here when using vE in the `jump0` quirks test\n  v5 := 1\n  jump quirks-resume\n","options":{"tickrate":20,"fillColor":"#FFCC00","fillColor2":"#FF6600","blendColor":"#662200","backgroundColor":"#996600","buzzColor":"#FFAA00","quietColor":"#000000","shiftQuirks":false,"loadStoreQuirks":false,"vfOrderQuirks":false,"clipQuirks":true,"jumpQuirks":false,"logicQuirks":true,"vBlankQuirks":true,"screenRotation":0,"maxSize":3216,"touchInputMode":"vip","fontStyle":"octo","displayScale":"6"},"rom":[0,224,97,1,96,8,171,2,208,31,96,16,171,17,208,31,96,24,171,32,208,31,96,32,171,47,208,31,96,40,171,62,208,31,96,48,171,77,208,31,97,16,96,8,171,92,208,31,96,16,171,107,208,31,96,24,171,122,208,31,96,32,171,137,208,31,96,40,171,152,208,31,96,48,171,167,208,31,18,80,161,255,240,101,64,1,19,180,64,2,19,234,64,3,21,176,64,4,23,200,64,5,26,22,64,9,18,128,18,124,96,0,224,161,18,112,112,1,64,16,0,238,18,112,240,10,34,110,0,224,109,10,110,1,171,219,35,68,109,14,110,7,171,231,35,68,109,14,110,12,171,242,35,68,109,14,110,17,171,252,35,68,109,14,110,22,172,4,35,68,109,14,110,27,172,13,35,68,96,171,97,199,98,4,101,0,162,202,241,85,163,42,241,85,18,202,67,1,208,18,34,110,0,0,245,30,245,30,245,30,245,30,241,101,99,0,243,21,244,7,52,0,18,236,172,22,208,18,100,10,244,21,100,1,131,67,100,14,228,158,18,250,69,0,18,250,117,255,18,196,100,15,228,158,19,8,149,32,19,8,117,1,18,196,134,80,100,10,228,161,19,40,100,0,114,1,116,1,228,158,19,32,134,64,118,255,19,40,84,32,19,20,114,255,18,218,34,110,0,0,246,30,246,30,246,30,246,30,100,2,244,30,241,101,100,16,128,65,163,66,241,85,0,0,252,101,35,170,65,0,0,238,128,16,35,170,66,0,0,238,128,32,35,170,67,0,0,238,128,48,35,170,68,0,0,238,128,64,35,170,69,0,0,238,128,80,35,170,70,0,0,238,128,96,35,170,71,0,0,238,128,112,35,170,72,0,0,238,128,128,35,170,73,0,0,238,128,144,35,170,74,0,0,238,128,160,35,170,75,0,0,238,128,176,35,170,76,0,0,238,128,192,35,170,0,238,172,34,240,30,221,228,125,4,0,238,0,224,172,194,96,12,97,8,208,31,112,9,172,209,208,31,172,224,112,8,208,31,112,4,172,239,208,31,112,8,172,254,208,31,112,8,173,13,208,31,18,124,172,24,218,180,0,238,172,24,218,180,18,124,0,224,104,1,105,5,106,10,107,1,101,42,102,43,172,50,216,180,172,170,217,180,172,24,54,43,172,28,218,180,107,6,172,54,216,180,172,170,217,180,172,28,69,42,172,24,218,180,107,11,172,58,216,180,172,170,217,180,172,28,85,96,172,24,218,180,107,16,172,66,216,180,172,170,217,180,172,28,118,255,70,42,172,24,218,180,107,21,172,74,216,180,172,170,217,180,172,28,149,96,172,24,218,180,107,26,172,46,216,180,172,170,217,180,35,222,104,24,105,28,106,33,107,1,172,38,216,180,172,94,217,180,172,24,218,180,107,6,172,70,216,180,172,38,217,180,172,28,135,80,71,42,172,24,218,180,107,11,172,70,216,180,172,42,217,180,172,28,103,42,135,177,71,43,172,24,218,180,107,16,172,70,216,180,172,46,217,180,172,28,102,120,103,31,135,98,71,24,172,24,218,180,107,21,172,70,216,180,172,50,217,180,172,28,102,120,103,31,135,99,71,103,172,24,218,180,107,26,172,70,216,180,172,54,217,180,172,28,102,140,103,140,135,100,71,24,172,24,218,180,104,47,105,51,106,56,107,1,172,70,216,180,172,58,217,180,172,28,102,140,103,120,135,101,71,236,172,24,218,180,107,6,172,70,216,180,172,94,217,180,172,28,102,224,134,110,70,192,172,24,218,180,107,11,172,70,216,180,172,62,217,180,172,28,102,15,134,102,70,7,172,24,218,180,107,16,172,98,216,180,172,58,217,180,171,182,96,0,97,48,241,85,171,183,240,101,172,28,64,48,172,24,218,180,107,21,172,98,216,180,172,50,217,180,171,182,102,137,246,51,242,101,172,24,48,1,172,28,49,3,172,28,50,7,172,28,218,180,107,26,172,42,216,180,172,170,217,180,19,228,172,38,142,208,111,240,142,242,142,230,142,230,254,30,218,180,122,4,172,38,142,208,111,15,142,242,142,238,142,238,254,30,218,180,122,5,0,238,172,35,146,192,172,32,123,1,218,179,122,4,123,255,0,238,0,224,109,0,110,0,173,28,35,68,106,22,107,0,96,50,97,15,109,129,37,122,99,15,111,20,131,241,111,0,130,0,130,17,142,240,108,63,37,160,130,224,108,0,37,160,130,48,108,31,37,160,122,1,109,130,37,122,99,15,111,20,131,242,111,0,130,0,130,18,142,240,108,2,37,160,130,224,108,0,37,160,130,48,108,4,37,160,122,1,123,5,106,0,109,131,37,122,99,15,111,20,131,243,111,0,130,0,130,19,142,240,108,61,37,160,130,224,108,0,37,160,130,48,108,27,37,160,122,1,109,132,37,122,99,15,111,20,131,244,130,0,130,20,142,240,108,65,37,160,130,224,108,0,37,160,130,48,108,35,37,160,122,1,109,133,37,122,99,20,111,15,131,245,130,0,130,21,142,240,108,35,37,160,130,224,108,1,37,160,130,48,108,5,37,160,122,1,123,5,106,0,109,134,37,122,143,0,143,246,131,240,130,0,130,38,142,240,108,25,37,160,130,224,108,0,37,160,130,48,108,0,37,160,122,1,109,135,37,122,99,15,111,20,131,247,130,16,130,7,142,240,108,35,37,160,130,224,108,1,37,160,130,48,108,5,37,160,122,1,109,142,37,122,143,0,143,254,131,240,130,0,130,46,142,240,108,100,37,160,130,224,108,0,37,160,130,48,108,0,37,160,122,1,109,0,110,16,173,34,35,68,106,22,107,16,96,200,97,100,109,132,37,122,99,200,111,100,131,244,130,0,130,20,142,240,108,44,37,160,130,224,108,1,37,160,130,48,108,44,37,160,122,1,109,133,37,122,99,15,111,20,131,245,130,16,130,5,142,240,108,156,37,160,130,224,108,0,37,160,130,48,108,251,37,160,122,1,123,5,106,0,109,134,37,122,111,27,143,246,131,240,98,27,130,38,142,240,108,13,37,160,130,224,108,1,37,160,130,48,108,1,37,160,122,1,109,135,37,122,99,20,111,15,131,247,130,0,130,23,142,240,108,156,37,160,130,224,108,0,37,160,130,48,108,251,37,160,122,1,109,142,37,122,143,0,143,254,131,240,130,0,130,46,142,240,108,144,37,160,130,224,108,1,37,160,130,48,108,1,37,160,122,1,109,0,110,27,173,40,35,68,106,22,107,27,109,254,37,122,171,182,97,16,241,30,96,170,240,85,171,198,240,101,122,4,130,0,108,170,37,160,122,9,18,124,0,224,161,254,240,101,64,1,24,2,64,2,24,10,64,3,24,18,109,6,110,3,173,58,35,68,109,16,110,12,173,72,35,68,109,16,110,17,173,81,35,68,109,16,110,22,173,89,35,68,96,173,97,46,98,2,18,184,171,182,96,1,240,85,24,24,171,182,96,2,240,85,24,24,171,182,96,3,240,85,34,110,0,224,173,162,244,101,173,167,111,120,255,21,101,30,208,17,117,255,53,0,24,40,130,68,131,244,254,7,62,0,24,38,96,1,51,0,96,0,50,4,96,0,171,183,240,85,0,224,174,100,96,28,97,29,208,22,96,22,97,2,208,18,133,240,96,34,208,18,134,240,0,224,174,100,96,61,97,5,208,22,96,3,97,4,208,18,135,240,97,10,208,18,136,240,0,224,96,110,97,50,208,22,96,40,97,17,208,18,137,240,96,52,208,18,137,244,97,23,208,18,137,244,96,40,208,18,137,244,96,0,69,0,96,1,85,96,96,2,85,112,96,2,85,128,96,2,57,4,96,2,171,184,240,85,0,224,109,1,110,1,173,99,35,68,101,0,111,15,128,2,79,0,101,1,102,0,111,15,128,1,79,0,102,1,103,0,111,15,128,3,79,0,103,1,171,182,240,101,172,35,48,1,24,236,69,1,172,32,24,240,69,0,172,32,106,59,107,2,218,179,173,154,69,1,173,151,85,96,173,158,85,112,173,158,109,44,110,1,35,68,109,1,110,6,173,108,35,68,96,5,171,198,240,85,240,101,133,0,171,182,240,101,172,35,48,2,25,44,69,5,172,32,25,48,53,5,172,32,106,59,107,7,218,179,173,151,69,5,173,154,109,44,110,6,35,68,109,1,110,11,173,115,35,68,171,182,241,101,172,35,48,1,25,90,65,1,172,32,25,94,65,0,172,32,106,59,107,12,218,179,173,154,65,1,173,151,109,44,110,11,35,68,109,1,110,16,173,125,35,68,171,182,242,101,172,35,48,3,25,136,66,0,172,32,25,140,66,1,172,32,106,59,107,17,218,179,173,154,66,1,173,151,66,2,173,158,109,44,110,16,35,68,109,1,110,21,173,134,35,68,101,0,102,8,103,0,104,32,133,110,135,134,171,182,240,101,172,35,48,2,25,198,69,0,172,32,25,202,53,0,172,32,106,59,107,22,218,179,173,154,69,0,173,151,85,112,173,158,109,44,110,21,35,68,109,1,110,26,173,143,35,68,96,135,110,139,190,0,171,182,240,101,172,35,48,2,25,254,53,0,172,32,26,2,69,0,172,32,106,59,107,27,218,179,173,154,69,1,173,151,109,44,110,26,35,68,18,124,0,224,161,254,240,101,64,1,26,80,64,2,26,84,64,3,26,186,109,10,110,3,173,180,35,68,109,8,110,12,173,192,35,68,109,8,110,17,173,204,35,68,109,8,110,22,173,214,35,68,96,173,97,168,98,2,18,184,97,158,26,86,97,161,96,238,170,154,241,85,0,224,174,20,255,101,171,182,255,85,109,18,110,3,174,36,35,68,109,18,110,10,174,44,35,68,109,18,110,17,174,52,35,68,109,18,110,24,174,60,35,68,110,0,42,146,126,1,78,16,110,0,26,136,171,182,254,30,240,101,98,1,238,161,98,0,144,32,26,184,128,224,128,14,174,68,240,30,241,101,174,100,208,22,171,182,254,30,128,32,240,85,0,238,0,224,109,6,110,13,173,228,35,68,96,3,240,21,240,10,241,7,49,0,26,232,224,161,26,238,0,224,172,32,96,30,97,9,208,19,109,16,110,17,173,242,35,68,18,124,109,10,173,251,26,242,109,8,174,7,0,224,110,17,35,68,172,35,96,30,97,9,208,19,18,124,15,2,2,2,2,2,0,0,31,63,113,224,229,224,232,160,13,42,40,40,40,0,0,24,184,184,56,56,63,191,0,25,165,189,161,157,0,0,12,29,29,1,13,29,157,1,199,41,41,41,39,0,0,248,252,206,198,198,198,198,0,73,74,73,72,59,0,0,0,1,3,3,3,1,240,48,144,0,0,128,0,0,0,254,199,131,131,131,198,252,231,224,224,224,224,113,63,31,0,0,7,2,2,2,2,57,56,56,56,56,184,184,56,0,0,49,74,121,64,59,221,221,221,221,221,221,221,221,0,0,160,56,32,160,24,206,252,248,192,192,202,202,196,0,0,48,68,36,20,99,241,3,7,199,39,71,35,193,0,0,40,142,168,168,166,206,135,3,3,3,135,254,252,0,0,96,144,240,128,112,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,10,8,3,180,10,13,3,234,10,18,5,176,10,23,7,200,10,28,10,22,104,76,52,84,148,44,148,120,60,116,120,0,8,148,76,48,92,148,88,100,68,100,0,12,148,52,100,112,44,136,36,40,0,16,148,64,88,44,68,116,0,20,148,108,124,76,112,84,116,0,24,148,84,60,140,104,44,56,0,192,192,234,172,170,234,206,170,170,174,160,192,128,160,64,160,224,160,160,224,192,64,64,224,224,32,192,224,224,96,32,224,160,224,32,32,224,192,32,192,224,128,224,224,224,32,32,32,224,224,160,224,224,224,32,224,64,160,224,160,192,224,160,224,224,128,128,224,192,160,160,192,224,192,128,224,224,128,192,128,96,128,160,96,160,224,160,160,224,64,64,224,96,32,32,192,160,192,160,160,128,128,128,224,224,224,160,160,192,160,160,160,224,160,160,224,192,160,192,128,64,160,224,96,192,160,192,160,96,192,32,192,224,64,64,64,160,160,160,96,160,160,160,64,160,160,224,224,160,64,160,160,160,160,64,64,224,96,128,224,0,0,0,0,0,224,0,0,0,0,0,64,255,0,255,0,60,0,60,0,60,0,60,0,255,0,255,255,0,255,0,56,0,63,0,63,0,56,0,255,0,255,128,0,224,0,224,0,128,0,128,0,224,0,224,0,128,248,0,252,0,62,0,63,0,59,0,57,0,248,0,248,3,0,7,0,15,0,191,0,251,0,243,0,227,0,67,224,0,224,0,128,0,128,0,128,0,128,0,224,0,224,72,44,104,104,140,0,52,44,112,112,140,0,100,120,72,60,112,0,12,13,8,2,12,18,8,10,12,23,8,18,104,76,52,84,148,104,88,44,120,64,100,112,92,0,8,148,52,72,76,104,152,36,0,12,148,116,52,72,76,104,0,16,148,136,100,152,52,72,76,104,0,128,64,148,112,60,116,60,120,0,92,60,92,100,112,140,0,56,76,116,104,156,132,44,76,120,0,52,88,76,104,104,76,96,68,0,116,72,76,64,120,76,96,68,0,80,124,92,104,76,96,68,0,100,96,0,100,64,64,0,60,112,112,0,32,12,0,0,1,128,4,13,10,80,4,18,10,84,4,23,10,186,104,76,52,84,148,100,104,52,100,56,60,0,8,148,60,136,40,60,148,56,100,132,96,0,12,148,60,136,44,8,148,124,104,0,16,148,64,136,4,44,148,68,60,120,84,60,140,0,104,112,60,116,116,148,44,96,140,148,84,60,140,0,44,88,88,148,68,100,100,56,0,96,100,120,148,72,44,88,120,76,96,68,0,96,100,120,148,112,60,88,60,44,116,60,56,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,148,12,148,16,148,52,0,20,148,24,148,28,148,56,0,32,148,36,148,40,148,60,0,44,148,4,148,48,148,64,0,24,23,16,2,24,2,32,2,16,9,24,9,32,9,16,16,24,16,32,16,16,23,32,23,40,2,40,9,40,16,40,23,254,254,254,254,254,254,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,101,0,25,238,101,1,25,238]}</script>
 <script>"use strict";
 
 function invertKeymap(k) {
@@ -227,6 +227,7 @@
 	this.maskFormatOverride = true;
 	this.numericFormatStr   = "default";
 	this.fontStyle          = 'octo';
+	this.audioVolume        = 0.25;
 
 	// interpreter state
 	this.p  = [[],[]];  // pixels
@@ -658,6 +659,7 @@
 	"touchInputMode",
 	"logicQuirks",
 	"fontStyle",
+	"audioVolume",
 ]
 function unpackOptions(emulator, options) {
 	optionFlags.forEach(x => { if (x in options) emulator[x] = options[x] })
@@ -839,7 +841,7 @@
 		audio.sampleRate < 128000 ? 4096 : 8192; // for 96000hz or more
 		audioNode = audio.createScriptProcessor(bufferSize, 1, 1);
 		audioNode.gain = audio.createGain();
-		audioNode.gain.gain.value = VOLUME ;
+		audioNode.gain.gain.value = emulator.audioVolume
 		audioNode.onaudioprocess = function(audioProcessingEvent) {
 			var outputBuffer = audioProcessingEvent.outputBuffer;
 			var outputData = outputBuffer.getChannelData(0);
@@ -888,8 +890,6 @@
 	audioData = [];
 }
 
-var VOLUME = 0.25;
-
 function playPattern(soundLength,buffer,pitch=PITCH_BIAS,
 	sampleState={ pos: 0 }) {
 	if (!audio) { return; }
@@ -1177,7 +1177,7 @@
       }
     },
     remove: (screen) => {
-      screen.uninstallSwipe()
+      if(screen.uninstallSwipe)screen.uninstallSwipe()
       delete screen.uninstallSwipe
     }
   },
@@ -1342,7 +1342,7 @@
       screen.uninstallSeg16=addPointer(screen,start,move,end)
     },
     remove:  (screen) => {
-      screen.uninstallSeg16()
+      if(screen.uninstallSeg16)screen.uninstallSeg16()
       delete screen.uninstallSeg16
     },
   },
@@ -1443,6 +1443,12 @@
 emulator.init({rom:data.rom})
 emulator.importFlags = _ => getPref('octoFlagRegisters')
 emulator.exportFlags = f => setPref('octoFlagRegisters',f)
+try { localStorage.getItem('octoFlagRegisters') }
+catch(e) {
+	console.warn("Persistent flag register storage is unavailable! Flag registers will not be saved across sessions.")
+	emulator.importFlags = _ => emulator.flags
+	emulator.exportFlags = f => emulator.flags = f
+}
 emulator.buzzTrigger = (ticks,rest)=> playPattern(ticks, emulator.pattern, rest)
 const kd = e=>{
 	if (!audio) audioSetup(emulator)
diff --git a/pictures/splash.png b/pictures/splash.png
index 4bd98ac..b8d4bcf 100644
Binary files a/pictures/splash.png and b/pictures/splash.png differ