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.
Pass (Oksan, 1992)
Memory Area:pass_map
Address RangeLengthFunctionDescription
0x0000-0x3FFFF262144ROM
0x80000-0x83FFF16384RAM
0x200000-0x200FFF4096RAM Write, Sharedpass_bg_videoram_w, bg_videoram (// Background)
0x210000-0x213FFF16384RAM Write, Sharedpass_fg_videoram_w, fg_videoram (// Foreground)
0x220000-0x2203FF1024RAM Device Write, Sharedpalette, palette_device, write, palette
0x230000-0x2300012Device Write 8-bitsoundlatch, generic_latch_8_device, write, 0x00ff
0x230100-0x2301012Read PortDSW
0x0001OffActive High
0x0000OnActive High
0x0002OffActive High
0x0000OnActive High
0x0004OffActive High
0x0000OnActive High
0x0008OffActive High
0x0000OnActive High
0x0010OffActive High
0x0000OnActive High
0x0020OffActive High
0x0000OnActive High
0x0040OffActive High
0x0000OnActive High
0x0080OffActive High
0x0000OnActive High
0x00002Active High
0x03003Active High
0x01004Active High
0x02005Active High
0x0400OffActive High
0x0000OnActive High
0x0000EasyActive High
0x1800NormalActive High
0x0800HardActive High
0x1000HardestActive High
0x00004C_1CActive High
0x80004C_1CActive High
0x40003C_1CActive High
0xc0002C_1CActive High
0xe0001C_1CActive High
0x60001C_2CActive High
0xa0001C_3CActive High
0x20001C_4CActive High
0x230200-0x2302012Read PortINPUTS
0x0001Coin 1Active Low
0x0002Start 1Active Low
0x0004Button 1Active Low
0x0008Button 2Active Low
0x0010Joystick UpActive Low
0x0020Joystick DownActive Low
0x0040Joystick LeftActive Low
0x0080Joystick RightActive Low
0x0100Coin 2Active Low
0x0200Start 2Active Low
0x0400Button 1Active Low
0x0800Button 2Active Low
0x1000Joystick UpActive Low
0x2000Joystick DownActive Low
0x4000Joystick LeftActive Low
0x8000Joystick RightActive Low
Memory Area:pass_sound_io_map
Address RangeLengthFunctionDescription
0x00001Device Readsoundlatch, generic_latch_8_device, read
0x0070-0x00712Device Read/Writeymsnd, ym2203_device, read, write
0x00801Device Writeoki, okim6295_device, write
0x00C01Device Writesoundlatch, generic_latch_8_device, clear_w
Memory Area:pass_sound_map
Address RangeLengthFunctionDescription
0x0000-0x7FFF32768ROM
0xF800-0xFFFF2048RAM
 

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:audiocpu
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF6553623CRC(b9a0ccde) (Fluke: 551D)
Memory Area:oki
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFFF13107231CRC(c7315bbd) (Fluke: 800D)
© Copyright 2009-2025, ClassicSoft, LLC. All rights reserved
Powered by the ClassicSoft Web Content Framework V3