Hallo Martijn, > Does anyone have the *electrical* specifications of the IEEE488 bus? I have to dig up the exact info at home. But AFAIK you should recon with about 3 Kohm for every line. This means 15 mA is sufficient enough to drive 8 peripherals. I assume you intend to use every portpin in bidirectional mode. If not, what about using the 7406 as driver? I thought I may have some 8751's laying around, but I'm not able to program them. Could these be of some help for you? If you need someone to test it, I can make a print myself with the needed connectors. Questions: - Is it going to be bi-directional? (My Tripod lacks this feature :( ) - As you only need about 20 lines, 4 are left over. What a an extra RS232 port? Groetjes, Ruud http://Ruud.C64.org - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail firstname.lastname@example.org.
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