Software › Lynx Colour Insert Screen

Lynx Colour Insert Screen

A self-authored, public-domain Atari Lynx homebrew boot program. On reset the 65C02 copies a 32-byte palette into Mikey’s GREEN/BLUERED pen registers, points DISPADR at a framebuffer in RAM, fills 160x102 pixels with colour bands, then enters a live loop that reflects the Suzy joystick latch into pen 0 so a button press visibly tints the screen. It uses no Suzy blitter and no boot ROM, so it runs cleanly on this core and is an ideal debugger target — set a breakpoint on the fill loop, single-step the 65C02, and watch the framebuffer fill.

Download ↓ Original source ↗

Format: 65C02 program, 115 bytes, org $0200  ·  By: emulators.org  ·  Licence: Public domain