Notes on the Kswichit 6502 Microprocessor Kit Simulator: Memory location $fe contains a new random byte on every instruction. Memory location $ff contains the ascii code of the last key pressed. Assembler directive: DCB <byte1> [, <byte2>...] for arbitrary data. Assembler label: <label>: All text following the semicolon is considered to be a comment. Set address with *=<address> For example, to store $01, $02, $03 starting at $210: *=$0210 DCB $01, $02, $03 Memory locations $9000 to $93ff map to the screen pixels. Different values will draw different colour pixels. The colours are: $0: Black $1: White $2: Red $3: Cyan $4: Purple $5: Green $6: Blue $7: Yellow $8: Orange $9: Brown $a: Light red $b: Dark grey $c: Grey $d: Light green $e: Light blue $f: Light grey Source Code at: https://github.com/tiggerntatie/kswichit-6502