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-rw-r--r--src/mame/drivers/naomi.cpp3
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) \