cardiograph-computer/2023-08-17.md

Dev notes — 2023-08-17

Goals for today

• *ADDR - Add relative offsets - *ADDR +1, $ADDR -2
• ? Add keypad visualization to simulator
  1. Display qwerty-to-VIP mapping for reference
  2. Highlight the most recent keypress on there
• Notes re: ROM and/or tape loader

Program ideas

• Programming ideas:
  • Keypad display
    1. Light pixel corresponding to most recent keypress
    2. Display character corresponging to most recent keypress
  • Draw dot at (x, y)
  • Move dot around display using keypad

Docs/graphics ideas

From apple note "2023-07-17 - cardiograph - worksheet for hand-assembling code… + other docs"

• docs/graphics: machine code quick ref (ops + short explanations + mnems)
• docs/graphics: assembly quick ref (as above, plus assembler-specific syntax like constants)
• docs/graphics: worksheet for hand-assembling