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.
Dog Patch (Midway, 1977)
Memory Area:dogpatch_io_map
Address RangeLengthFunctionDescription
0x00001Mirror, Read Port0x04, IN0
0x0001Coin 1Active Low
0x0002Start 1Active Low
0x0004Start 2Active Low
0x0008UnknownActive Low
0x0070Positional VActive High
0x0080Button 1Active Low
0x00011Device Writemb14241, mb14241_device, shift_count_w
0x00011Mirror, Read Port0x04, IN1
0x0001UnknownActive Low
0x0002UnknownActive Low
0x0004UnknownActive Low
0x0008UnknownActive Low
0x0070Positional VActive High
0x0080Button 1Active Low
0x00021Device Writemb14241, mb14241_device, shift_data_w
0x00021Mirror, Read Port0x04, IN2
0x000310Active High
0x000215Active High
0x000120Active High
0x000025Active High
0x000cCoinageActive High
0x00082 Coins per PlayerActive High
0x000c2 Coins/1 or 2 PlayersActive High
0x00001 Coin per PlayerActive High
0x00041 Coin/1 or 2 PlayersActive High
0x00103 extra cansActive High
0x00005 extra cansActive High
0x00c0150Active High
0x0080175Active High
0x0040225Active High
0x0000275Active High
0x00031Writedogpatch_audio_w
0x00031Mirror, Device Read0x04, mb14241, mb14241_device, shift_result_r
0x00041Device Writewatchdog, watchdog_timer_device, reset_w
0x00051Writemidway_tone_generator_lo_w
0x00061Writemidway_tone_generator_hi_w
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
0x0000-0x07FF2048dogpatch.hCRC(74ebdf4d) (Fluke: 7C12)
0x0800-0x0FFF2048dogpatch.gCRC(ac246f70) (Fluke: 2971)
0x1000-0x17FF2048dogpatch.fCRC(a975b011) (Fluke: C3AC)
0x1800-0x1FFF2048dogpatch.eCRC(c12b1f60) (Fluke: 5103)
© Copyright 2009-2025, ClassicSoft, LLC. All rights reserved
Powered by the ClassicSoft Web Content Framework V3