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# VICE xplus4 - 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_xplus4
Systems | commodore-plus4

Technical notes

All system ROMs embedded in binary: BASIC (318006-01), kernal PAL (318004-05), kernal NTSC (318005-05), kernal V232 (318004-01), kernal V364 (364), 3+1 function low (317053-01), 3+1 function high (317054-01), V364 speech ROM (c2lo-364). All drive ROMs embedded (1540, 1541, 1541-II, 1551, 1570, 1571, 1571CR, 1581, 1001, 2031, 2040, 3040, 4040, 9000). TED palettes embedded (colodore_ted, BT601, BT709, BT2020, yape-pal, yape-ntsc). Embedded check in sysfile_load takes priority over filesystem. Models: C16 PAL/NTSC, Plus/4 PAL/NTSC, V364 NTSC, 232 NTSC — all use embedded kernal variants. No JiffyDOS support (C64/C128/SCPU64 only). 3+1 function ROMs loaded for Plus/4 and V364 models, cleared to 0xFF for C16 and 232 models. c2lo loaded only for V364 model.

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