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.
Spotty (Prince Co., 2001)
Memory Area:spotty_io_map
Address RangeLengthFunctionDescription
0x0000-0x00034Read PortIN0
0x10000Hold 1Active Low
0x20000Hold 2Active Low
0x40000Hold 3Active Low
0x80000Hold 4Active Low
0x100000BetActive Low
0x200000StopActive Low
0x400000ChangeActive Low
0x800000UnusedActive Low
0xff00ffffUnusedActive Low
0x0800-0x08034Write NOP(// hopper related)
0x0800-0x08034Read PortIN1
0x10000UnusedActive Low
0x20000UnusedActive Low
0x40000UnusedActive Low
0x80000UnusedActive Low
0x100000Prize Hopper 1Active Low
0x200000Prize Hopper 2Active Low
0x400000Prize Hopper 3Active Low
0x800000UnusedActive Low
0xff00ffffUnusedActive Low
0x1000-0x10034Read PortIN2
0x10000Start 1Active Low
0x20000UnusedActive Low
0x40000Coin 1Active Low
0x80000SpecialActive High
0x400000SpecialActive Low
0x800000SpecialActive High
0x0000OffActive High
0x20000000OnActive High
0x80000000UnusedActive Low
0x5f10ffffUnusedActive Low
0x4800-0x48034Write PortEEPROMOUT
0x5000-0x50034Writespotty_soundlatch_w
Memory Area:spotty_map
Address RangeLengthFunctionDescription
0x0000-0x1FFFFF2097152RAM, Sharedmainram
0x40002000-0x400024D31236RAM(//?)
0x80000000-0x80007FFF32768RAM Write, Sharedfg_videoram_w, fg_videoram
0x80008000-0x8000FFFF32768RAM Write, Sharedmd_videoram_w, md_videoram
0x80010000-0x80017FFF32768RAM Write, Sharedbg_videoram_w, bg_videoram
0x80018000-0x80018FFF4096RAM, Sharedspriteram
0x80019000-0x80019FFF4096RAM, Sharedspriteram2
0x8001C000-0x8001DFFF8192RAM Device Write, Sharedpalette, palette_device, write, palette
0x8001E000-0x8001EBFF3072RAM(// ? not used)
0x8001FFEC-0x8001FFFF20RAM, Sharedvideoreg
0x8003E000-0x8003E0034Writespriteram_buffer_w
0xFFF00000-0xFFFFFFFF1048576ROM, Regionuser1,0
Memory Area:spotty_sound_io_map
Address RangeLengthFunctionDescription
0x00001Read/Writespotty_sound_cmd_r, spotty_sound_cmd_w (//not sure about anything...)
0x00001Read, Device Writespotty_sound_r, oki, okim6295_device, write (//? sound latch and ?)
 

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
0x0000-0x0FFF4096at89c4051.mcuCRC(82ceab26) (Fluke: 116E)
Memory Area:oki
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFFF262144sou_rom1CRC(5791195b) (Fluke: 4E39)
© Copyright 2009-2025, ClassicSoft, LLC. All rights reserved
Powered by the ClassicSoft Web Content Framework V3