Hello Frank, > Bad thing with pinouts. Maybe two jumper would help something, but > extreme care should be taken when... Better build two or three cables, > than burn two or three computers. True, but I think I'll try to build the universal cable. I'll test it first on the C64 and VIC-20, since my 8032-SK has an IEEE-488 like connector for the user port. > At least you can connect all commies at once to one PC and serve all > at once. If I had 3 bidirectional printer ports on my PC, yes. Or 4, if I'll ever get a similar interface for my C16. > http://easyport.hypermart.net/cable.gif The schematic diagram doesn't mention the resistor values. The diagram at <URL:http://members.tripod.com/%7EFrank_Kontros/easyport/cable.gif> does. I gather that the bigger resistors I use, the less likely it should be that the interface chips get damaged. > Would be very nice if near complete line of C='s would communicate > with the same cable (with one PC :). The software's on C='s are > different, but same (or one?) on the PC side. With careful design, you could make the software auto-detect on which computer it is running. :-) The only unanswered question is: What is the DIAG pin on the PET user port used for? Can I safely program it as a '1' output and use it as a voltage source for the 74HCT74 chip? Marko - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail cbm-hackers-request@dot.tcm.hut.fi.
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