Tia - RetroBIOS¶
Technical notes
Tia is an Atari 2600 core written for libretro by Eric Warmenhoven, with no standalone build; the repository is its own upstream. The version string is the commit count and short hash the Makefile bakes in (Makefile:36-37, src/libretro.c:595). The .info shows 26.
No BIOS or firmware files required.
Why no files
The core opens no file. src/ has no fopen, filestream or opendir call and libretro.c never asks for RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY; its environment calls cover options, logging, controller info, input descriptors, messages, pixel format and AV info. The Supercharger BIOS is a 294-byte routine compiled in (src/cart.c:195-235) and written into the ROM bank of every AR tape image (src/cart.c:300-319), the default tape-load header is a compiled table (src/cart.c:237-272), and the NTSC, PAL and SECAM palettes in their standard and z26 variants are const tables (src/palette.c). Content arrives in memory (src/libretro.c:596).
Generated on 2026-09-14T09:03:10Z