diff options
Diffstat (limited to 'src/mame/drivers/naomi.cpp')
-rw-r--r-- | src/mame/drivers/naomi.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mame/drivers/naomi.cpp b/src/mame/drivers/naomi.cpp index 2bb004e5e92..637ce33983f 100644 --- a/src/mame/drivers/naomi.cpp +++ b/src/mame/drivers/naomi.cpp @@ -3564,7 +3564,8 @@ Region byte encoding is as follows: First half is BIOS, second half is game settings and is blanked/reprogrammed by the BIOS if game cartridge exchange was detected area 0x1A000-0x1BFFF is write protected and contain 12 bytes of unit-specific unique information (probably serial number, manufacture date, etc), 2 dumps included for reference - fpr-24363.ic48 - later Sega's boot ROM, have removed Sammy logo, only last 1/4 used (2 high address bits tied to Vcc). + fpr-24363.ic48 - BOOT ROM from Sega 837-14624R PCB, in comparison with Sammy's BOOT contain minor code change to keep video output disabled during Sammy logo display routine. + Only last 128KB of whole 512KB ROM actually used (2 high address pins tied to Vcc). */ #define AW_BIOS \ ROM_REGION64_LE( 0x200000, "awflash", 0) \ |