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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.
Valtric (NMK (Jaleco license), 1986)
Memory Area:sound_map_a
Address RangeLengthFunctionDescription
0x0000-0x7FFF32768ROM
0x8000-0x87FF2048RAM
0xC0001Device Readsoundlatch, generic_latch_8_device, read
Memory Area:sound_portmap_2
Address RangeLengthFunctionDescription
0x0000-0x00012Device Read/Writeym1, ym2203_device, read, write
0x0080-0x00812Device Read/Writeym2, ym2203_device, read, write
Memory Area:valtric_map
Address RangeLengthFunctionDescription
0x0000-0x7FFF32768ROM
0x8000-0xBFFF16384ROM Bankmainbank
0xC0001Read PortSYSTEM
0xC0011Read PortP1
0xC0021Read PortP2
0xC0031Read PortDSW1
0xC0041Read PortDSW2
0xC2001Device Writesoundlatch, generic_latch_8_device, write
0xC2011Writeflipscreen_w
0xC2021Writebankselect_w
0xC3001Writevaltric_unknown_w
0xC308-0xC3092RAM, Sharedbg1_scrollx
0xC30A-0xC30B2RAM, Sharedbg1_scrolly
0xC30C1Writevaltric_bg_status_w
0xC30D1Writevaltric_mosaic_w
0xC400-0xCFFF3072RAM Write, Sharedvaltric_paletteram_w, paletteram
0xD000-0xD7FF2048RAM Write, Sharedtxram_w, txram
0xD800-0xDFFF2048RAM Write, Sharedbg1ram_w, bg1ram
0xE000-0xF1FF4608RAM
0xF200-0xF7FF1536RAM, Sharedspriteram
0xF800-0xFFFF2048RAM
 

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
0x0000-0x7FFF32768vt_01.binCRC(4616484f) (Fluke: 7CAB)
Memory Area:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF65536vt_02.binCRC(66401977) (Fluke: C5BB)
0x10000-0x1FFFF65536vt_03.binCRC(9203bbce) (Fluke: 0585)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF65536vt_08.binCRC(661dd338) (Fluke: 8DB3)
0x10000-0x1FFFF65536vt_09.binCRC(085a35b1) (Fluke: E278)
0x20000-0x2FFFF65536vt_10.binCRC(09c47323) (Fluke: C8CC)
0x30000-0x3FFFF65536vt_11.binCRC(4cf800b5) (Fluke: AE9E)
Memory Area:gfx3
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFF32768vt_07.binCRC(d5f9bfb9) (Fluke: 7C11)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFF32768vt_04.binCRC(709c705f) (Fluke: 1490)
0x10000-0x1FFFF65536vt_06.binCRC(c9cbb4e4) (Fluke: 226B)
0x20000-0x2FFFF65536vt_05.binCRC(7ab2684b) (Fluke: 5DA2)
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