On 6/22/21 3:06 AM, Mike Naberezny wrote: > On 6/20/21 8:43 AM, Six Of DLoC wrote: >> Anyone have an Alphacom 42 they want to pop open and see if one of >> these is on the board? > > I have an Alphacom VP42 printer and to my surprise, it does indeed > contain a "VIC-42" chip: > > http://mikenaberezny.com/hardware/c64-128/alphacom-vp42-printer/ > > My first thought upon seeing this was that it could be a MOS 6500/1 like > in the Commodore 1520 plotter. I did some quick continuity checks and > that seems probable. Vcc, Vss, and the crystal match the pins on the > 6500/1 datasheet. If it's in fact a 6500/1 then the firmware should be dumpable using the same method as was used for the Amiga keyboard controller and the 1520 plotter. GerritReceived on 2021-06-22 09:00:05
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