Search

Memory Map

The following is a memory map that was generated based on the MAME source code (.180).  This information is only as accurate as the MAME driver is.  If you see any errors, please let me know what that error is.
 
The Memory Area is related to where the information is from (CPU, Sound Board, etc..), and it may also reflect what it has in common with other hardware.
Checkmate (Dave Nutting Associates / Midway, 1977)
Memory Area:checkmat_io_map
Address RangeLengthFunctionDescription
0x0000-0x00034Writecheckmat_io_w
0x00001Read PortIN0
0x0001Joystick UpActive High
0x0002Joystick DownActive High
0x0004Joystick LeftActive High
0x0008Joystick RightActive High
0x0010Joystick UpActive High
0x0020Joystick DownActive High
0x0040Joystick LeftActive High
0x0080Joystick RightActive High
0x00011Read PortIN1
0x0001Joystick UpActive High
0x0002Joystick DownActive High
0x0004Joystick LeftActive High
0x0008Joystick RightActive High
0x0010Joystick UpActive High
0x0020Joystick DownActive High
0x0040Joystick LeftActive High
0x0080Joystick RightActive High
0x00021Read PortIN2
0x0001CoinageActive High
0x00001 Coin/1 or 2 PlayersActive High
0x00011 Coin/1 or 2 Players, 2 Coins/3 or 4 PlayersActive High
0x0002UnusedActive High
0x0000OffActive High
0x0002OnActive High
0x00002Active High
0x00043Active High
0x00084Active High
0x000c5Active High
0x0010UnusedActive High
0x0000OffActive High
0x0010OnActive High
0x0060LanguageActive High
0x0000EnglishActive High
0x0020Language 2Active High
0x0040Language 3Active High
0x0060Language 4Active High
0x00031Read PortIN3
0x0001Start 1Active High
0x0002Start 2Active High
0x0004Start 3Active High
0x0008Start 4Active High
0x0010UnusedActive High
0x0020UnusedActive High
0x0040UnusedActive High
0x0080Coin 1Active High
Memory Area:main_map
Address RangeLengthFunctionDescription
0x0000-0x1FFF8192ROM, Write NOP
0x2000-0x3FFF8192Mirror, RAM, Shared0x4000, , main_ram
0x4000-0x5FFF8192ROM, Write NOP
 

ROM Map for this game

 
This is the ROM map for the game.  This should tell you what address the ROM is at, how big it is, what it's used for.   
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x03FF1024checkmat.hCRC(3481a6d1) (Fluke: 2344)
0x0400-0x07FF1024checkmat.gCRC(df5fa551) (Fluke: E9E0)
0x0800-0x0BFF1024checkmat.fCRC(25586406) (Fluke: 08B1)
0x0C00-0x0FFF1024checkmat.eCRC(59330d84) (Fluke: 7756)
0x1000-0x13FF1024checkmat.dlanguage ROM
© Copyright 2009-2025, ClassicSoft, LLC. All rights reserved
Powered by the ClassicSoft Web Content Framework V3