electronizer Posted March 5, 2019 Share Posted March 5, 2019 I have two 810 side boards with what look like ROM upgrades, using piggybacked chips. One has a data separator board, the other doesnt: I also have a side board with a windowed FDC: Are these of any interest for ROM dumps? 1 Quote Link to comment Share on other sites More sharing options...
BillC Posted March 6, 2019 Share Posted March 6, 2019 Likely a Happy 810 Upgrade, the original version was wired point to point like this. The post linked below has images of a similar upgrade, though the wiring was done a little differently, that was confirmed to work with Happy V5.3 software. http://atariage.com/forums/topic/169186-a-tale-of-3-atari-810-drives/?do=findComment&comment=2159286 1 Quote Link to comment Share on other sites More sharing options...
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