X Millennium - RetroBIOS

Type	libretro
Classification	Community forks
Source	https://github.com/libretro/xmil-libretro
Upstream	http://amethyst.yui.ne.jp/svn/x1/xmil/trunk/
Version	0.60a
Profiled	2026-03-25
Cores	x1
Systems	sharp-x1

Technical notes

Place all files in: /xmil/ The core selects between IPLROM.X1 and IPLROM.X1T based on the "X1_ROMTYPE" core option. A 575-byte built-in IPL stub provides limited boot without the real ROMs. Font files add Japanese character support; the libretro port has a path resolution quirk where fonts are searched in "./" instead of "xmil/" (missing file_setcd call).

5 files | 0 required, 5 optional | 5 in repo, 0 missing | 4 with HLE fallback

IPLROM.X1 optional in repo HLE fallback
X1 IPL ROM. Loaded when ROM_TYPE=1 (X1 model).

• Path: xmil/IPLROM.X1
• Size: 32.0 KB
• Source: io/memio.c:82, io/memio.c:96-108
• Platforms: batocera, lakka, recalbox, retroarch, retrobat, retropie

IPLROM.X1T optional in repo HLE fallback
X1 Turbo/TurboZ IPL ROM. Loaded when ROM_TYPE=2 or 3.

• Path: xmil/IPLROM.X1T
• Size: 32.0 KB
• Source: io/memio.c:83, io/memio.c:97-108
• Platforms: lakka, recalbox, retroarch, retropie

FNT0808.X1 optional in repo HLE fallback
8x8 ANK font ROM. Built-in defrom_ank fallback provides basic ASCII.

• Path: xmil/FNT0808.X1
• Size: 2.0 KB
• Validation: size
• Source: font/fontdata.c:6, font/fontx1.c:79-87

FNT0816.X1 optional in repo HLE fallback
8x16 ANK font ROM. Built-in fallback derived from defrom_ank/defrom_txt.

• Path: xmil/FNT0816.X1
• Size: 4.0 KB
• Validation: size
• Source: font/fontdata.c:7, font/fontx1.c:89-103

FNT1616.X1 optional in repo
16x16 Kanji font ROM. No built-in kanji data (zeroed). Required for Japanese text.

• Path: xmil/FNT1616.X1
• Size: 299.0 KB
• Validation: size
• Source: font/fontdata.c:8, font/fontx1.c:105-120

Generated on 2026-09-14T09:03:10Z