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TODO.md

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TODO List for Logic System Simulator

High priority

  • Fix moving: ctr-click then drag -> shouldn't starts moving; long click -> should start moving
  • Take undo snapshot after key events too
  • Adder orientation
  • Prevent click event if right-click and when dragging
  • More consistently set things dirty

Medium priority

  • High-Z bus logic
  • Add tootips to components, e.g., describe what happens on the next state transition, etc.
  • Save/restore using browser's storage
    • standalone
      • no long term storage
      • sessionstorage pour recharger la page et restaurer le contenu
      • localstorage pour reproposer le contenu si rechargé plus tard, 1 seule entrée
      • avec un bouton
    • embedded
      • with manually-defined id
      • only with sessionstorage

Low priority

  • Add rich HTML annotations
  • Computation delay for components with inputs and outputs
  • Disable/hide input of component (e.g., to make exercise to prevent alu from knowing how to do a subtraction)
  • Lock component to some "parent" to move them more intuitively?
  • Implement Quine–McCluskey algorithm for function normalization

DONE

  • Allow editing custom component
  • Copy-paste
  • Add external component library by drag-and-drop from file
  • Custom component creation
  • Get key events also when multiple editors are on the same page
  • Show keyboard shortcuts in context menus
  • Hide tootips when mouse leaves web component boundaries
  • Rework value propagation to make it instant if necessary and independent of drawing
  • Finish implementation of SVG export
  • Undo/redo as buttons
  • Don't store Z in memory cells, but unknown instead
  • Allow repeating deletions with Cmd+Y
  • Highlight only nodes when dragging
  • (Address) decoder: 2, 3, 4 bit versions
  • Incrementable register
  • Swap ROM for RAM and inversely
  • Load/save RAM/ROM contents via file and editor
  • ROM
  • Lock position
  • Show selected RAM contents
  • Draw n-x-1 mux/demux compactly
  • Remove stale tooltips when deleting components
  • Replace input with clock and conversely
  • Make left buttons honor dark mode
  • Generic shared drawing code
  • Move width and height computation to component's def
  • 8-bit counter
  • Replace with component with different params (e.g. 4-bit to 8-bit)
  • prevent clock "backlog" from running like crazy
  • 8-bit adder, ALU, register, ROM, display
  • 4-bit adder with carry in and out
  • Add waypoint by dragging; add wire by alt-dragging from existing wire
  • Correct register display when horizontal
  • 8-bit register
  • ShiftRegister
  • Mux/Demux 16:8, 8:16
  • Zoom
  • Undo/redo
  • 4-bit and 8-bit display without interpretation
  • Separate V and Cout output for ALU
  • 8-bit input, 8-bit RAM
  • Add label, rectangle
  • Demux
  • Mux graphics
  • Allow to force initial input to stabilize a circular circuit (e.g. SR latch)
  • Allow dynamic component names
  • Make input constant 0 or 1
  • Allow wire coloring
  • Handle rapid second click as a repeated click if doubleClick not handled
  • Embed images with esbuild's dataurl/text loader; import CSS and HTML templates as well
  • Switch to embeddable web components with single JS file
  • Chainable 4-bit counter
  • Option to have disconnected as high-Z
  • 16 x 4 bit memory
  • Editor-level options and UI to set options
  • Can now color all wires and nodes as neutral
  • Replace fillText with drawLabel
  • Edge detector -- can now be done with XOR(A, NOT(NOT(A)))) with new propagation system
  • Fix flipflop update issue, e.g. in shift register
  • Multiplexers
  • Use esbuild to create bundle
  • Add 4-bit register
  • Add 4-bit dip switch showing value
  • Insert midpoints for wires to route them better
  • Get rid of p5
  • Add contextual menu to displays and adder
  • Refactor component hierarachy, in-memory list and JSON repr
  • Extract common stuff into Component superclass
  • Align input and output nodes on grid
  • Connect components with Shift key for overlapping nodes
  • Make 'esc' cancel item placement (wire or component)
  • Allow forcing output nodes to a predefined value
  • Allow inputs to be undetermined ('?')
  • Allow gates to be drawn in an undetermined shape
  • Change cursor depending on possible interaction
  • Validate JSON when loaded, define JSON types in a smart way
  • Allow changing modes, add admin mode to force nodes in states
  • Generate links or Markdown blocks with given diagram
  • Optimize draw calls
  • Support touch events
  • Unify click-and-drag also from left buttons instead of click-and-move