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"usg252" Virtual Machine


ROM Set/Virtual Machine: usg252
Long Name: Games V25.4X
Manufacturer: U.S. Games
Year: 1992
Clone?: No
Implemented In: usgames.c
Monitor Type: raster
Orientation: horizontal
Resolution: 400 x 248 (w x h)
Colors: 16

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 usg252.u12 8000 - FFFF 766A855A 9AFE e67ca9944d92192de423de6aa8a60f2e28b17db1
CPU1 usg252.u28 1C000 - 1FFFF D44D2FFA 9BF7 8bd756418b4f8ad11cb0f2044fb91c63d7771497
CPU1 usg252.u18 2C000 - 2FFFF 2FFF1DA2 A1E5 c44718f7aab82f45379f21b68e8ee2668fe3a378
CPU1 usg252.u36 3C000 - 3FFFF B6D007BE F2F2 ec2afe983fd925d9f4602f47ddadd117bcc74972
CPU1 usg252.u35 4C000 - 4FFFF 9542295B 2135 56dd7b8fd581779656cb71cc42dbb9f77fb303f4

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: M6809
CPU#: 1
Sound?: No
Fluke 9010A Script
Start - End   R   W 
0 - FFF r w
1000 - 1FFF r w
2000 - 2000 w
2001 - 2001 w
2400 - 2400 r
2410 - 2410 r
2420 - 2420 w
2430 - 2430 w
2440 - 2440 w
2441 - 2441 r w
2460 - 2460 w
2470 - 2470 r
2800 - 2FFF r w
3000 - 3FFF r w
4000 - 7FFF r w
8000 - FFFF r w

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