diff options
-rw-r--r-- | src/mame/namco/namcos2.cpp | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/mame/namco/namcos2.cpp b/src/mame/namco/namcos2.cpp index 881fcdea4a8..8bbfb305a34 100644 --- a/src/mame/namco/namcos2.cpp +++ b/src/mame/namco/namcos2.cpp @@ -110,6 +110,13 @@ which contains: This stream is then combined with the stream from the text plane pixel generator with the highest priority pixel being displayed on screen. +There were two different System II CPU PCBs. 8618961200 uses the C65 I/O MCU +(Hitachi 63705). 8618961803 (the last digit may vary) uses the C68 I/O MCU +(Mitsubishi 37450). Each MCU has a socket for an external EPROM, though the +C68 EPROM is normally unpopulated except on transitional PCBs which used a +stock MCU presumably running in ROMless mode. Some games have been seen with +either MCU type. + Graphics Board details ====================== @@ -547,7 +554,6 @@ C102 - Controls CPU access to ROZ Memory Area. #include "namcos2.h" #include "cpu/m68000/m68000.h" -#include "cpu/m6805/m6805.h" #include "cpu/m6809/m6809.h" #include "machine/nvram.h" #include "sound/ymopm.h" |