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.
Forty-Love (Taito Corporation, 1984)
Memory Area:40love_map
Address RangeLengthFunctionDescription
0x0000-0x7FFF32768ROM
0x8000-0x87FF2048RAM(/* M5517P on main board */)
0x88001Device Read/Writebmcu, buggychl_mcu_device, buggychl_mcu_r, buggychl_mcu_w
0x88011Device Read, Writebmcu, buggychl_mcu_device, buggychl_mcu_status_r, pix1_mcu_w (//pixel layer related)
0x88021Writebank_select_w
0x88031Read/Writepix2_r, pix2_w (//pixel layer related)
0x88041Read/Writefrom_snd_r, sound_command_w
0x88051Read, Write NOPsnd_flag_r, (//????)
0x88071Read NOP(/* unknown */)
0x88081Read PortDSW3
0x0000OffActive High
0x0010OnActive High
0x0000OffActive High
0x0020OnActive High
0x0040OffActive High
0x0000OnActive High
0x00001Active High
0x00802Active High
0x88091Read PortP1
0x0001Joystick LeftActive Low
0x0002Joystick RightActive Low
0x0004Joystick DownActive Low
0x0008Joystick UpActive Low
0x0010Button 1Active Low
0x0020Button 2Active Low
0x0040Button 3Active Low
0x0080Button 4Active Low
0x880A1Read PortSYSTEM
0x0001UnknownActive Low
0x0002UnknownActive Low
0x0004Coin 1Active High
0x0008Coin 2Active High
0x0010Start 1Active Low
0x0020Start 2Active Low
0x0040Service 1Active Low
0x0080TiltActive Low
0x880B1Read PortP2
0x0001Joystick LeftActive Low
0x0002Joystick RightActive Low
0x0004Joystick DownActive Low
0x0008Joystick UpActive Low
0x0010Button 1Active Low
0x0020Button 2Active Low
0x0040Button 3Active Low
0x0080Button 4Active Low
0x880C1Read Port, WriteDSW1, fortyl_pixram_sel_w (/* pixram bank select */)
0x0004Free_PlayActive High
0x0004OffActive High
0x0000OnActive High
0x0018LivesActive High
0x00001Active High
0x00183Active High
0x00105Active High
0x00086Active High
0x0040Flip_ScreenActive High
0x0000OffActive High
0x0040OnActive High
0x0080CabinetActive High
0x0000UprightActive High
0x0080CocktailActive High
0x880D1Read Port, Write NOPDSW2, (/* unknown */)
0x000fCoin_AActive High
0x000f9C_1CActive High
0x000e8C_1CActive High
0x000d7C_1CActive High
0x000c6C_1CActive High
0x000b5C_1CActive High
0x000a4C_1CActive High
0x00093C_1CActive High
0x00082C_1CActive High
0x00001C_1CActive High
0x00011C_2CActive High
0x00021C_3CActive High
0x00031C_4CActive High
0x00041C_5CActive High
0x00051C_6CActive High
0x00061C_7CActive High
0x00071C_8CActive High
0x00f0Coin_BActive High
0x00f09C_1CActive High
0x00e08C_1CActive High
0x00d07C_1CActive High
0x00c06C_1CActive High
0x00b05C_1CActive High
0x00a04C_1CActive High
0x00903C_1CActive High
0x00802C_1CActive High
0x00001C_1CActive High
0x00101C_2CActive High
0x00201C_3CActive High
0x00301C_4CActive High
0x00401C_5CActive High
0x00501C_6CActive High
0x00601C_7CActive High
0x00701C_8CActive High
0x9000-0x97FF2048Read/Write, Sharedfortyl_bg_videoram_r, fortyl_bg_videoram_w, videoram (/* #1 M5517P on video board */)
0x9800-0x983F64RAM, Sharedvideo_ctrl (/* video control area */)
0x9840-0x987F64RAM, Sharedspriteram (/* sprites part 1 */)
0x9880-0x98BF64Read/Write, Sharedfortyl_bg_colorram_r, fortyl_bg_colorram_w, colorram (/* background attributes (2 bytes per line) */)
0x98C0-0x98FF64RAM, Sharedspriteram2 (/* sprites part 2 */)
0xA000-0xBFFF8192ROM Bankbank1
0xC000-0xFFFF16384Read/Writefortyl_pixram_r, fortyl_pixram_w (/* banked pixel layer */)
Memory Area:sound_map
Address RangeLengthFunctionDescription
0x0000-0xBFFF49152ROM
0xC000-0xC7FF2048RAM
0xC800-0xC8012Device Writeaysnd, ay8910_device, address_data_w
0xCA00-0xCA0D14Device Writemsm, msm5232_device, write
0xCC001Writesound_control_0_w
0xCE001Writesound_control_1_w
0xD8001Device Read, Writesoundlatch, generic_latch_8_device, read, to_main_w
0xDA001Read NOP, Writenmi_enable_w (/* unknown read */)
0xDC001Writenmi_disable_w
0xDE001Read NOP, Device Writedac, dac_byte_interface, write (/* signed 8-bit DAC - unknown read */)
0xE000-0xEFFF4096ROM(/* space for diagnostics ROM */)
 

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
0x0000-0x1FFF8192a30-08.u08CRC(2fc42ee1) (Fluke: B53D)
0x2000-0x3FFF8192a30-09.u09CRC(3a75abce) (Fluke: B295)
0x4000-0x5FFF8192a30-10.u10CRC(393c4b5b) (Fluke: E126)
0x6000-0x7FFF8192a30-11.u37CRC(11b2c6d2) (Fluke: CF8C)
0x8000-0x9FFF8192a30-12.u38CRC(f7afd475) (Fluke: BF06)
0xA000-0xBFFF8192a30-13.u39CRC(e806630f) (Fluke: 66E0)
Memory Area:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF8192a30-25.u22CRC(15e594cf) (Fluke: FB83)
0x4000-0x5FFF8192a30-27.u24CRC(57c67f6f) (Fluke: DBD1)
0x6000-0x7FFF8192a30-28.u25CRC(d581d067) (Fluke: 32EF)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF8192a30-29.u62CRC(02deaf40) (Fluke: 65CF)
0x2000-0x3FFF8192a30-30.u63CRC(439f3731) (Fluke: 8927)
0x4000-0x5FFF8192a30-31.u64CRC(7ed70e81) (Fluke: 4B64)
0x6000-0x7FFF8192a30-32.u65CRC(0434655b) (Fluke: 4A41)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF8192a30-19.ic1CRC(7baca598) (Fluke: 3833)
0x2000-0x3FFF8192a30-20.ic2CRC(a7b4f2cc) (Fluke: F3E2)
0x4000-0x5FFF8192a30-21.ic3CRC(49a372e8) (Fluke: C7FD)
0x6000-0x7FFF8192a30-22.ic4CRC(0c06d2b3) (Fluke: ADF8)
0x10000-0x11FFF8192a30-23.ic5CRC(6dcd186e),banked at 0xa000 (Fluke: 28EF)
0x12000-0x13FFF8192a30-24.ic6CRC(590c20c8),banked at 0xa000 (Fluke: 11C5)
Memory Area:mcu
Address RangeLengthLabel/LocationDescription
0x0000-0x07FF2048a30-14CRC(c4690279) (Fluke: F81B)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x03FF1024a30-15.u03CRC(55e38cc7),red (Fluke: 5A)
0x0400-0x07FF1024a30-16.u01CRC(13997e20),green (Fluke: CA19)
0x0800-0x0BFF1024a30-17.u02CRC(5031f2f3),blue (Fluke: B415)
0x0C00-0x0FFF1024a30-18.u13CRC(78697c0f),??? (Fluke: 7BE6)
© Copyright 2009-2025, ClassicSoft, LLC. All rights reserved
Powered by the ClassicSoft Web Content Framework V3