QUASI88 - RetroBIOS

Type	libretro
Classification	community_fork
Source	https://github.com/libretro/quasi88-libretro
Upstream	https://www.retropc.net/showzoh/quasi88/
Version	0.6.4
Profiled	2026-03-25
Cores	quasi88
Systems	pc-8801

Technical notes

Files go in /quasi88/ or directly in /. The pseudo-BIOS covers N88-BASIC V2 and the disk subsystem at a basic level. For full compatibility (N-BASIC, V1H/V1S modes, dictionary lookup, kanji display), real ROM files are needed.

Core option "quasi88_basic_mode" selects N88 V2, N88 V1H, N88 V1S, or N mode. Each mode requires its corresponding ROM.

13 files | 2 required, 11 optional | 11 in repo, 2 missing | 5 with HLE fallback

n88.rom -required, HLE available

• Path: quasi88/n88.rom
• Size: 32.0 KB
• Aliases: N88.ROM
• Source: src/LIBRETRO/libretro.c:550-551
• Platforms: recalbox, retrodeck
• N88-BASIC main ROM (32 KB). Falls back to pseudo-BIOS if missing.

n88_0.rom -required

• Path: quasi88/n88_0.rom
• Size: 8.0 KB
• Aliases: N88_0.ROM, N88EXT0.ROM, n88ext0.rom
• Source: src/LIBRETRO/libretro.c:555
• Platforms: lakka, recalbox, retroarch, retrodeck, retropie
• N88-BASIC V2 extension ROM 0 (8 KB). Needed by most software.

n88_1.rom -optional

• Path: quasi88/n88_1.rom
• Size: 8.0 KB
• Aliases: N88_1.ROM, N88EXT1.ROM, n88ext1.rom
• Source: src/LIBRETRO/libretro.c:556
• Platforms: lakka, recalbox, retroarch, retrodeck, retropie
• N88-BASIC V1H extension ROM 1 (8 KB). For V1 High-speed mode.

n88_2.rom -optional

• Path: quasi88/n88_2.rom
• Size: 8.0 KB
• Aliases: N88_2.ROM, N88EXT2.ROM, n88ext2.rom
• Source: src/LIBRETRO/libretro.c:557
• Platforms: lakka, recalbox, retroarch, retrodeck, retropie
• N88-BASIC V1S extension ROM 2 (8 KB). For V1 Standard mode.

n88_3.rom -optional

• Path: quasi88/n88_3.rom
• Size: 8.0 KB
• Aliases: N88_3.ROM, N88EXT3.ROM, n88ext3.rom
• Source: src/LIBRETRO/libretro.c:558
• Platforms: lakka, recalbox, retroarch, retrodeck, retropie
• N88-BASIC extension ROM 3 (8 KB). Older V2 extension.

n88n.rom -optional

• Path: quasi88/n88n.rom
• Size: 32.0 KB
• Aliases: N88N.ROM, N80.ROM, n80.rom
• Source: src/LIBRETRO/libretro.c:559
• Platforms: recalbox, retrodeck
• N-BASIC ROM (32 KB). For PC-8001 compatible N-BASIC mode.

disk.rom -optional, HLE available

• Path: quasi88/disk.rom
• Size: 2.0 KB
• Aliases: DISK.ROM, N88SUB.ROM, n88sub.rom
• Source: src/LIBRETRO/libretro.c:552-553
• Platforms: recalbox, retrodeck
• Disk subsystem ROM (2 KB, 2D type). Falls back to pseudo-BIOS if missing.

n88knj1.rom -optional

• Path: quasi88/n88knj1.rom
• Size: 128.0 KB
• Aliases: N88KNJ1.ROM, KANJI1.ROM, kanji1.rom
• Source: src/LIBRETRO/libretro.c:560
• Platforms: recalbox, retrodeck
• Kanji ROM level 1 (128 KB). Required for Japanese text display.

n88knj2.rom -optional

• Path: quasi88/n88knj2.rom
• Size: 128.0 KB
• Aliases: N88KNJ2.ROM, KANJI2.ROM, kanji2.rom
• Source: src/LIBRETRO/libretro.c:561
• Kanji ROM level 2 (128 KB). Extended kanji character set.

n88jisho.rom -optional

• Path: quasi88/n88jisho.rom
• Size: 512.0 KB
• Aliases: N88JISHO.ROM, JISYO.ROM, jisyo.rom
• Source: src/LIBRETRO/libretro.c:562
• Dictionary ROM (512 KB). Japanese dictionary lookup.

font.rom -optional, HLE available

• Path: quasi88/font.rom
• Size: 2.0 KB
• Aliases: FONT.ROM
• Source: src/LIBRETRO/libretro.c:566
• Platforms: lakka, recalbox, retroarch, retropie
• ANK font ROM (2 KB). Falls back to built-in font or kanji ROM glyphs.

font2.rom -optional, HLE available, missing from repo

• Path: quasi88/font2.rom
• Size: 4.0 KB
• Aliases: FONT2.ROM
• Source: src/LIBRETRO/libretro.c:576
• Second font ROM (up to 4 KB). Falls back to built-in ANH font.

font3.rom -optional, HLE available, missing from repo

• Path: quasi88/font3.rom
• Size: 4.0 KB
• Aliases: FONT3.ROM
• Source: src/LIBRETRO/libretro.c:588
• Third font ROM (up to 4 KB). Zeroed out if missing.

Generated on 2026-03-25T14:56:43Z