Add/update SD card related testbenchs

harbaum · Dec 18, 2023 · a17fae8 · a17fae8
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diff --git a/sim/README.md b/sim/README.md
@@ -31,6 +31,19 @@ card are probably sufficient:
 $ dd if=/dev/sdb of=sd16g.img bs=1024 count=10240
 ```
 
+## sdc_tb
+
+The [SD card testbench](sdc_tb) is a low level testbench that was
+created to implement a 4 bit SD card driver with read and write
+capabilities. It is based in the
+[FPGA-SDcard-Reader](https://github.com/WangXuan95/FPGA-SDcard-Reader)
+project. This testbench includes a verilator/c++ implementation of an
+SD card.
+
+This testbench comes with an [Arduino sketch](sdc_tb/sdtest) that was
+used on a ESP8266 to test and learn about the 4 bit SD card mode with
+a real SD card connected to the ESP8266 microcontroller.
+
 ## flash_tb
 
 [Flash_tb](flash_tb) simulates interfacing to the SPI flash of the Tang Nano

diff --git a/sim/floppy_tb/Makefile b/sim/floppy_tb/Makefile
@@ -10,7 +10,7 @@ OBJ_DIR=obj_dir
 VERILATOR_DIR=/usr/local/share/verilator/include
 VERILATOR_FILES=verilated.cpp verilated_vcd_c.cpp verilated_threads.cpp
 
-HDL_FILES = floppy_tb.v sd_fake.v ../../src/misc/sd_card.v ../../src/misc/sdcmd_ctrl.v ../../src/misc/sd_reader.v ../../src/fdc1772/fdc1772.v ../../src/fdc1772/floppy.v
+HDL_FILES = floppy_tb.v ../../src/misc/sd_card.v ../../src/misc/sdcmd_ctrl.v ../../src/misc/sd_rw.v ../../src/fdc1772/fdc1772.v ../../src/fdc1772/floppy.v
 
 FATFS=../../../../firmware/bouffalo_sdk/components/fs/fatfs