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# VICE xpet - RetroBIOS

Type | libretro
Classification | community_fork
Source | https://github.com/libretro/vice-libretro
Upstream | https://sourceforge.net/projects/vice-emu/
Version | 3.10
Profiled | 2026-03-25
Cores | vice_xpet
Systems | commodore-pet

Technical notes

System ROMs embedded in binary: kernal 1 (901439-04-07), kernal 2 (901465-03), kernal 4 (901465-22), BASIC 1 (901439-09-05-02-06), BASIC 2 (901465-01-02), BASIC 4 (901465-23-20-21), chargen 1 (901447-08), chargen 2 (901447-10), SuperPET chargen (901640-01), 6 editor ROMs (1g40, 2b40, 2g40, 4b40, 4b80, 4g40), 6 SuperPET Waterloo 6809 ROMs (a000-f000), plus all drive ROMs (1540, 1541, 1541-II, 1551, 1570, 1571, 1571CR, 1581, 1001, 2031, 2040, 3040, 4040, 9000) and CRTC palettes (amber, green, white). Embedded ROM check in sysfile_load takes priority over filesystem. Models: 2001, 3008, 3016, 3032, 3032B, 4016, 4032, 4032B, 8032, 8096, 8296, SuperPET. PET uses IEEE-488 bus (not IEC serial), so no JiffyDOS support. No cartridge support. Extension ROM slots ($9000/$A000/$B000) and German chargen (chargen.de) are standalone-only features not exposed via libretro core options.

No BIOS or firmware files required. Generated on 2026-03-25T14:56:43Z