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.
Western Express (Data East Corporation, 1986)
Memory Area:master_io_map
Address RangeLengthFunctionDescription
0x00011Read PortIN0
Memory Area:master_map
Address RangeLengthFunctionDescription
0x0000-0x05FF1536RAM, Sharedmain_ram
0x0600-0x07FF512RAM, Sharedspriteram
0x0800-0x0BFF1024RAM Write, Sharedexprraid_videoram_w, videoram
0x0C00-0x0FFF1024RAM Write, Sharedexprraid_colorram_w, colorram
0x18001Read PortDSW0 (/* DSW 0 */)
0x18011Read PortIN1 (/* Controls */)
0x18021Read PortIN2 (/* Coins */)
0x18031Read PortDSW1 (/* DSW 1 */)
0x20001Writeexprraid_int_clear_w
0x20011Writesound_cpu_command_w
0x20021Writeexprraid_flipscreen_w
0x20031Write NOP(// DMA SWAP - Allow writes to video and sprite RAM)
0x2800-0x28034Writeexprraid_bgselect_w
0x28001Readexprraid_prot_data_r
0x28011Readexprraid_prot_status_r
0x28041Writeexprraid_scrolly_w
0x2805-0x28062Writeexprraid_scrollx_w
0x28071Writeexprraid_prot_data_w
0x4000-0xFFFF49152ROM
Memory Area:slave_map
Address RangeLengthFunctionDescription
0x0000-0x1FFF8192RAM
0x2000-0x20012Device Read/Writeym1, ym2203_device, read, write
0x4000-0x40012Device Read/Writeym2, ym3526_device, read, write
0x60001Readsound_cpu_command_r
0x8000-0xFFFF32768ROM
 

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:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFF16384cz07.5bCRC(686bac23),characters (Fluke: 22D6)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFF32768cz09.16hCRC(1ed250d1),sprites (Fluke: A09A)
0x8000-0xFFFF32768cz08.14hCRC(2293fc61) (Fluke: A3A0)
0x10000-0x17FFF32768cz13.16kCRC(7c3bfd00) (Fluke: 1A7B)
0x18000-0x1FFFF32768cz12.14kCRC(ea2294c8) (Fluke: C59E)
0x20000-0x27FFF32768cz11.13kCRC(b7418335) (Fluke: DD99)
0x28000-0x2FFFF32768cz10.11kCRC(2f611978) (Fluke: D811)
Memory Area:gfx3
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFF32768cy04.8eCRC(f2e93ff0),tiles (Fluke: C433)
0x10000-0x17FFF32768cy05.8fCRC(c44570bf),tiles (Fluke: 65C8)
0x18000-0x1FFFF32768cy06.8hCRC(c3a56de5),tiles (Fluke: 45BE)
Memory Area:gfx4
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFF32768cy03.12dCRC(242e3e64) (Fluke: 2A93)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x4000-0x7FFF16384cy01-2.16bCRC(a0ae6756) (Fluke: E6F7)
0x8000-0xFFFF32768cy00-4.15aCRC(c66d4dd3)
Memory Area:plds
Address RangeLengthLabel/LocationDescription
0x0000-0x0103260pal16r4a.5cCRC(d66aaa87) (Fluke: 1A5D)
0x0200-0x0303260pal16r4a.5eCRC(9a8766a7) (Fluke: 592B)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x00FF256cy-17.5bCRC(da31dfbc),red (Fluke: 366C)
0x0100-0x01FF256cy-16.6bCRC(51f25b4c),green (Fluke: 7846)
0x0200-0x02FF256cy-15.7bCRC(a6168d7f),blue (Fluke: 50DA)
0x0300-0x03FF256cy-14.9bCRC(52aad300),??? (Fluke: 960C)
Memory Area:slave
Address RangeLengthLabel/LocationDescription
0x8000-0xFFFF32768cy02-1.2aCRC(552e6112) (Fluke: EC25)
© Copyright 2009-2025, ClassicSoft, LLC. All rights reserved
Powered by the ClassicSoft Web Content Framework V3