MegaCD BIOS

NOTES
SegaCD JPN BIOS V1.00

Unused early track header loaded into the VDP in the Mega CD BIOS (JPN; V1.00) when accessing menu.
All ROM/RAM have the same domestic and international names.
ROM:
0x100: SEGA MEGA DRIVE (C)SEGA 1991.DEC MEGA-CD BOOT ROM 12/28-1991 10:30 OS2 1.00S MEGA-CD BOOT ROM BR 000102-1.00 J
0x40C: NuRAM_CARTRIDG
0x47C: SEGA
0x769: ERROR! THIS IS A PAL-COMPATIBLE MEGA DRIVE EXCLUSIVELY FOR USE IN SOUTHEAST ASIA.

all data from 0x6C0C to 0x8E82 in RAM is empty
Game header loaded at 0x8E82
In CD PRG RAM:
0x100: SEGA MEGA CD (C)SEGA 1991.NOV CD-ROM BIOS 11/20-1991 17:00 1.00g CD-ROM BIOS BR 000002-1.00W
0x2C2: SEGA
0x46A: BOOT____SYS
Disc types?:
0x3F5E: "SEGADISC"
0x3F6E: "SEGABOOTDISC"
0x3F7E: "SEGADATADISC"
0x3F8E: "SEGADISCSYSTEM" - An early name?
0x4362: PRODUCED BY OR UNDER LICENSE FROM KABUSHIKI KAISHA SEGA ENTERPRISES"
Names:
0x43DC: "____________    @SEGA_CD_ROM"
0x43EE: RAM_CARTRIDGE________
0x45E0: E.NOT_EXIST__.UNFORMAT
0x8D82: "SEGADISCSYSTEM" - An early name?
0x8D92: "SEGAIPSAMP"
0x8E02: "SYSTEM NAME"
0x19000+ is regularly updated, probably to do with the sega cd logo and its positions. 0x19186 appears to be some sort of timer, as it endlessly counts down from 0x5F to 0x00 and then back. There are a few others.

Genesis EBRAM:
0x3FE0: "ESAGC__DOR M. AR_MACTRIGERD_E__". ???. Also present in CD BRAM.