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.
Disco Boy (Soft Art Co., 1993)
Memory Area:discoboy_map
Address RangeLengthFunctionDescription
0x0000-0x7FFF32768ROM
0x8000-0xBFFF16384ROM Bankbank1
0xC000-0xC7FF2048Read/Writerambank_r, rambank_w
0xC800-0xCFFF2048Read/Writediscoboy_ram_att_r, discoboy_ram_att_w
0xD000-0xDFFF4096Read/Writerambank2_r, rambank2_w
0xE000-0xEFFF4096RAM
0xF000-0xFFFF4096RAM
Memory Area:io_map
Address RangeLengthFunctionDescription
0x00001Read Port, WriteDSWA, discoboy_port_00_w
0x0007CoinageActive High
0x00004C_1CActive High
0x00013C_1CActive High
0x00032C_1CActive High
0x00071C_1CActive High
0x00022C_3CActive High
0x00061C_2CActive High
0x00051C_3CActive High
0x00041C_4CActive High
0x0008Bonus_LifeActive High
0x0008Every 150000Active High
0x0000Every 300000Active High
0x0010LivesActive High
0x00103Active High
0x00004Active High
0x0060DifficultyActive High
0x0000EasyActive High
0x0060NormalActive High
0x0040HardActive High
0x0020HardestActive High
0x00011Read Port, WriteSYSTEM, discoboy_port_01_w
0x0001UnknownActive Low
0x0002Start 2Active Low
0x0004UnknownActive Low
0x0008Start 1Active Low
0x0010UnknownActive Low
0x0020Coin 2Active Low
0x0040UnknownActive Low
0x0080Coin 1Active Low
0x00021Read PortP1
0x0001UnknownActive Low
0x0002UnknownActive Low
0x0004Button 2Active Low
0x0008Button 1Active Low
0x0010Joystick RightActive Low
0x0020Joystick LeftActive Low
0x0040Joystick DownActive Low
0x0080Joystick UpActive Low
0x00031Read Port, WriteP2, discoboy_port_03_w
0x0001UnknownActive Low
0x0002UnknownActive Low
0x0004Button 2Active Low
0x0008Button 1Active Low
0x0010Joystick RightActive Low
0x0020Joystick LeftActive Low
0x0040Joystick DownActive Low
0x0080Joystick UpActive Low
0x00041Read PortDSWB
0x0080Demo_SoundsActive High
0x0080OffActive High
0x0000OnActive High
0x00061Read/Writediscoboy_port_06_r, discoboy_port_06_w (// ???)
0x00071Writerambank_select_w (// 0x20 is palette bank bit.. others?)
Memory Area:sound_map
Address RangeLengthFunctionDescription
0x0000-0x7FFF32768ROM
0x8000-0xBFFF16384ROM Banksndbank
0xE0001Writeyunsung8_sound_bankswitch_w
0xE4001Writeyunsung8_adpcm_w
0xEC00-0xEC012Device Writeymsnd, ym3812_device, write
0xF000-0xF7FF2048RAM
0xF8001Device Readsoundlatch, generic_latch_8_device, read
 

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
0x0000-0xFFFF655362.u28CRC(7c2ed174) (Fluke: A490)
0x10000-0x1FFFF655361.u45CRC(c266c6df) (Fluke: 7D20)
Memory Area:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF655365.u94CRC(dbd20836) (Fluke: CA51)
0x10000-0x4FFFF2621446.u124CRC(e20d41f8) (Fluke: DC68)
0x80000-0x8FFFF655367.u95CRC(1d5617a2) (Fluke: E01F)
0x90000-0xCFFFF2621448.u125CRC(30be1340) (Fluke: 526A)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF65536u80CRC(4cc642ae) (Fluke: 46E5)
0x10000-0x2FFFF131072u50CRC(1557ca92) (Fluke: 7999)
0x40000-0x4FFFF65536u81CRC(9e04274e) (Fluke: 1C48)
0x50000-0x6FFFF131072u5CRC(a07df669) (Fluke: BA93)
0x80000-0x8FFFF65536u78CRC(04571f70) (Fluke: 906E)
0x90000-0xAFFFF131072u46CRC(764ffde4) (Fluke: 1966)
0xC0000-0xCFFFF65536u79CRC(646f0f83) (Fluke: 46F2)
0xD0000-0xEFFFF131072u49CRC(0b6c0d8d) (Fluke: 3BCD)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF65536u2CRC(44a4fefa) (Fluke: AE1F)
0x10000-0x2FFFF131072u18CRC(88d1282d) (Fluke: DD4E)
© Copyright 2009-2025, ClassicSoft, LLC. All rights reserved
Powered by the ClassicSoft Web Content Framework V3