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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.
Hit the Ice (Taito Corporation (Williams license), 1990)
Memory Area:hitice_map
Address RangeLengthFunctionDescription
0x0000-0x7FFFF524288ROM
0x600000-0x60000F16Device Read/Write 8-bittc0220ioc, tc0220ioc_device, read, write, 0xff00
0x00014 PlayersActive High
0x00002 PlayersActive High
0x0008Demo_SoundsActive High
0x0000OffActive High
0x0008OnActive High
0x0070CoinageActive High
0x00503C_1CActive High
0x00602C_1CActive High
0x00701C_1CActive High
0x00301C_2CActive High
0x00401C_3CActive High
0x00101C_4CActive High
0x00201C_5CActive High
0x00001C_6CActive High
0x610000-0x6100012Read PortP3_P4
0x0001Joystick UpActive Low
0x0002Joystick DownActive Low
0x0004Joystick LeftActive Low
0x0008Joystick RightActive Low
0x0010Button 1Active Low
0x0020Button 2Active Low
0x0040Button 3Active Low
0x0080Start 3Active Low
0x0100Joystick UpActive Low
0x0200Joystick DownActive Low
0x0400Joystick LeftActive Low
0x0800Joystick RightActive Low
0x1000Button 1Active Low
0x2000Button 2Active Low
0x4000Button 3Active Low
0x8000Start 4Active Low
0x700000-0x7000012Read NOP, Device Write 8-bittc0140syt, tc0140syt_device, master_port_w, 0xff00
0x700002-0x7000032Device Read/Write 8-bittc0140syt, tc0140syt_device, master_comm_r, master_comm_w, 0xff00
0x800000-0x803FFF16384RAM(/* Main RAM */)
0xA00000-0xA01FFF8192RAM Device Write, Sharedpalette, palette_device, write, palette
0xB00000-0xB7FFFF524288RAM Write, Sharedhitice_pixelram_w, pixelram
0xBFFFF2-0xBFFFF54Writehitice_pixel_scroll_w
Memory Area:viofight_sound_map
Address RangeLengthFunctionDescription
0x0000-0x3FFF16384ROM
0x4000-0x7FFF16384ROM Bankbank1
0x8000-0x8FFF4096RAM
0x9000-0x90012Device Read/Writeymsnd, ym2203_device, read, write
0xA0001Device Writetc0140syt, tc0140syt_device, slave_port_w
0xA0011Device Read/Writetc0140syt, tc0140syt_device, slave_comm_r, slave_comm_w
0xB000-0xB0012Device Read/Writeoki, okim6295_device, read, write (/* yes, both addresses for the same chip */)
 

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
0x0000-0xFFFF65536c59-08.50CRC(d3cbc10b) (Fluke: 7AEC)
0x0000-0xFFFF65536c59-08.50CRC(d3cbc10b) (Fluke: 7AEC)
Memory Area:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288c59-03.12CRC(9e513048) (Fluke: BC9F)
0x80000-0xFFFFF524288c59-02.13CRC(affb5e07) (Fluke: 5530)
Memory Area:oki
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFFF131072c59-01.30CRC(46ae291d) (Fluke: FA4A)
Memory Area:plds
Address RangeLengthLabel/LocationDescription
0x0000-0x0143324pal20l8b-c59-04.25CRC(2ebcf07c) (Fluke: ECFF)
0x0000-0x0143324pal20l8b-c59-04.25CRC(2ebcf07c) (Fluke: ECFF)
0x0200-0x0303260pal16l8b-c59-05.26CRC(37b67c5c) (Fluke: 0553)
0x0200-0x0303260pal16l8b-c59-05.26CRC(37b67c5c) (Fluke: 0553)
0x0400-0x0543324pal20l8b-c59-06.53CRC(bf176875) (Fluke: 3338)
0x0400-0x0543324pal20l8b-c59-06.53CRC(bf176875) (Fluke: 3338)
0x0600-0x0703260pal16r4b-c59-07.61CRC(cf64bd95) (Fluke: 11B4)
0x0600-0x0703260pal16r4b-c59-07.61CRC(cf64bd95) (Fluke: 11B4)
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