Bill Degnan wrote > Hi, > I have a strange C64C (I believe) motherboard with: > > PCB ASSY NO.250451 > PCB No. 251915 Rev.2 > > ...printed on it. I don't see this board documented in the normal places > and the PCB does not come up in a search, any ideas? The VIC-II is > missing. > > https://www.vintagecomputer.net/commodore/64C_250451/250451_251915_pic1.jpg > > Thanks > > Bill Degnan Wow, you found a prototype board! This is obviously (by the part number) after the 250425, but curiously BEFORE 250466. Maybe this board was not stable or the new PLA could not be manufactured quickly or cheaply enough (it was not a Commodore chip- I thought it was a Sanyo) so they stuck with the old design for one more iteration? -- Pete Rittwage https://c64preservation.com -- Sent from: http://cbm-hackers.2304266.n4.nabble.com/Received on 2021-03-09 00:00:03
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