Mauro72 Posted December 21, 2017 Share Posted December 21, 2017 Hi friends, Is possible to mix those memory chips? I know, +5v in 4116 is leg n9 and in 4516/4164 is n8. So redirecting the +5v from leg n8 with a wire to pin9 and cutting leg 1 (-5v in 4116) and leg n8 +12v to +5v... may be work? In 4516/4164 leg n9 is A7, no needed for coleco... is correct? Thanks! Quote Link to comment Share on other sites More sharing options...
towmater Posted December 22, 2017 Share Posted December 22, 2017 You are correct, you need to bend up the pins so that they don't receive -5v and +12v and tie the unused address line to high or gnd so that they don't float. I'd suggest testing the chips before doing the hack. Quote Link to comment Share on other sites More sharing options...
+nanochess Posted December 22, 2017 Share Posted December 22, 2017 I suggest strongly to put sockets for RAM chips. Quote Link to comment Share on other sites More sharing options...
Mauro72 Posted December 22, 2017 Author Share Posted December 22, 2017 I suggest strongly to put sockets for RAM chips. Yes, its ready. I have socketed VRAMs, VDP, Z80, 1889. 1 Quote Link to comment Share on other sites More sharing options...
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