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Coin-Op : Arcade : Head On 2 : "headon2" Virtual Machine

Overview

ROM Set/Virtual Machine: headon2
Long Name: Head On 2
Manufacturer: Sega
Year: 1979
Clone?: No
Implemented In: vicdual.c
Monitor Type: raster
Orientation: horizontal
Resolution: 256 x 224 (w x h)
Colors: 64

NOTE: These are MAME "Virtual Machines." These virtual machines are ROM-specific but contain address space information (memory maps) that may be useful when debugging hardware. There may be descrencies between MAME's definition of the hardware, and actual hardware. Information is provided for reference only. THERE ARE NO ROMS ANYWHERE ON THIS WEB SITE.


Driver Details

ROM Regions:

Region ROM File Start - End CRC 9010A SHA1
CPU1 u27.bin 0 - 3FF FA47D2FB 3868 b3208f5bce228c453bdafbc9c1f2c8e1bd920d32
CPU1 u26.bin 400 - 7FF 61C47B15 D2A3 47619bd51fcaf47dd72e940c474f310c9287f2f4
CPU1 u25.bin 800 - BFF BB16DB92 11E5 f57dfbe52b0e545c7c889ac846dc7281d28f2698
CPU1 u24.bin C00 - FFF 17A09F24 9B98 0cb40ec185f2ee3a26e943d84e8e2834d5f9d3ed
CPU1 u23.bin 1000 - 13FF 24895E F4DA 60f81c383f1541555c26f7cf111a12a34f7f4f3e
CPU1 u22.bin 1400 - 17FF F798304D 5ED1 55526c6daead9b74a88e8bc0311155aa41a93210
CPU1 u21.bin 1800 - 1BFF 4C19DD40 61FE 0bdfed47594c7aa5ff655b507350fc6a912b6855
CPU1 u20.bin 1C00 - 1FFF 25887FF2 FD4 67cfb5ac93902b4c603f02c876c021ff453e5f0e
PROMS 316-0138.u44 0 - 1F 67104EA9 8DD0 26b6bd2a1973b83bb9af4e3385d8cb14cb3f62f2
PROMS u65.bin 20 - 3F E60A7960 5274 b8b8716e859c57c35310efc4594262afedb84823
PROMS u66.bin 40 - 5F A1506B9D DC42 037c3db2ea40eca459e8acba9d1506dd28d72d10

NOTE: These are the "ROM Regions" defined in the MAME "Virtual Machine." Usually these correspond to actual CPUs or Sound CPUs. Occasionally they will not. Occasionally they will be wrong, or they will not be mappable locations. Paging is usually handled through a software "hack" and not represented in this map.
9010A: Refers to the Fluke 9010A Signature Analysis algorithm. You should independently confirm these signature numbers before using. Different ROM versions will have different signatures.

Emulated CPUs:

CPU: Z80
CPU#: 1
Sound?: No
Fluke 9010A Script
Start - End   R   W 
0 - 7FFF r w
8000 - 83FF r w
8400 - 87FF r w
8800 - 8FFF r w
9000 - 93FF r w
9400 - 97FF r w
9800 - 9FFF r w
A000 - A3FF r w
A400 - A7FF r w
A800 - AFFF r w
B000 - B3FF r w
B400 - B7FF r w
B800 - BFFF r w
C000 - C3FF r w
C400 - C7FF r w
C800 - CFFF r w
D000 - D3FF r w
D400 - D7FF r w
D800 - DFFF r w
E000 - E3FF r w
E400 - E7FF r w
E800 - EFFF r w
F000 - F3FF r w
F400 - F7FF r w
F800 - FFFF r w
 


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