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haroldo-ok

@haroldo-ok source repo

2 published skills

  1. ▌
    Sega 32x Gamedev · haroldo-ok bundle
    Create, improve, optimize, and port games for the Sega 32X (Sega Mars) using Chilly Willy's 32XDK toolchain and the DOOM 32X Resurrection (d32xr) codebase as reference. Use whenever the user wants to port a game (DOS, Genesis, PICO-8, HTML5, or any platform) to the 32X, build or debug a homebrew 32X ROM, or make a 32X game of any kind: software-3D / polygon (fixed-point transform, flat-triangle rasterizer), a Comanche-style voxel landscape / voxel shmup, or a 2D sprite game / shooter / arcade port with menus. Also for the second SH-2 / dual-core, optimizing SH-2 code, measuring framerate, fixing a black-screen ROM, or PicoDrive tests. Trigger even when the user only says "port X to 32X", "make a 32X game", "3D/voxel on 32X", "compile this for 32X", mentions a `.32x` ROM, SH-2 / dual-SH2 / 68000 Mars hardware, the mars.ld linker, VDP framebuffer/palette issues, or PWM audio. Prefer this skill over general knowledge for the 32X: its toolchain, memory map, and test methodology are easy to get subtly wrong.
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  2. ▌
    Sega Master System Devkitsms · haroldo-ok bundle
    Program, build, debug, and port Sega Master System (and Game Gear / SG-1000) homebrew games in C with devkitSMS (SMSlib + PSGlib) and the SDCC Z80 compiler. Use whenever the user writes, compiles, fixes, optimizes, or ports an SMS/Master System or Game Gear game or demo: the SDCC + devkitSMS toolchain; producing a `.sms`/`.gg` ROM; VDP tiles, the tilemap, hardware sprites, palettes, PSG music/SFX, joypad input, VBlank/line interrupts, ROM bank switching, SRAM saves; converting assets (`.psgcompr` tiles, `vgm2psg` music, `folder2c`/`assets2banks`); or debugging the classic "compiles but boots to a black screen" failure. Trigger on mentions of devkitSMS, SMSlib, PSGlib, SDCC `-mz80`, ihx2sms, crt0_sms, `SMS_addSprite`/`SMS_waitForVBlank`, a `.sms` ROM, Master System / Game Gear homebrew, or Haroldo-OK's SMS games (Jill of the Jungle, Dangerous Dave, Food Fighter, Sub Rescue, Commander Keen). Prefer it over general knowledge for the SMS toolchain, VDP limits, or ROM format — easily gotten wrong from memory.
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