Found an early revision undumped Athena SNK PCB

callanbrown

Student
Joined
Jan 18, 2023
Messages
20
Reaction score
26
Location
Canada
Hi all,

I came across this Athena in set of boards I purchased. The CPU is the same A6001-UP02-01 that is refenced in the MAME driver, but the video board is A6001-UP01-01, which is not referenced. You can see there is a factory bodge section which necessitated the more common video board revision.

The graphics ROMs all match MAME, as do the sound ROMs. But the main program ROMs are most similar to the set called "athenab" which has a note "really a bootleg?" in the MAME driver. The 27256 ROM is identical to the one in the athenab set, but the 27128 ROM has a handful of byte differences.

Comparing to MAME, this board runs faster but I haven't gotten deep into it yet to figure out if it's a MAME thing. I'll try to compare to MiSTer as it should be pretty spot on for speed.

Anyone ever seen this one before?
 

Attachments

  • PXL_20260210_202505462.jpg
    PXL_20260210_202505462.jpg
    364.9 KB · Views: 24
  • PXL_20260210_202444205.jpg
    PXL_20260210_202444205.jpg
    352.8 KB · Views: 22
  • PXL_20260210_202449266.jpg
    PXL_20260210_202449266.jpg
    365.4 KB · Views: 20
Back
Top