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ColecoVision USB Mulit-Cart Diagnostic error code reference
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Author:  Yurkie [ Thu Jul 16, 2009 12:30 pm ]
Post subject:  ColecoVision USB Mulit-Cart Diagnostic error code reference

I have a very minor video problem on one of my ColecoVisions.

I ran the UBS Cartridge Diagnostic selected VRAM test and got the following message.

VRAM Test FAIL @ 0x7194 [71,F7]

Does this point specifically to one of the 8 VRAM ICs ?

Could all 8 VRAMs be ok, and there is a problem with the VDP?

Is the a reference guide that tell what each code means?

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