tim@cmu-cs-k.ARPA (Tim Maroney) (02/01/85)
Last year, I bought a military surplus Intertec SuperBrain for use as an intelligent terminal. However, it is far more versatile than that, which has led me to want to attach some outher devices to it. There used to exist a beast known as a SuperBrain S-100 bus adaptor. This fits onto the internal 40-pin Z-80 bus connector, and provides an S-100 bus interface. My question: Does anyone know where I could pick up the S-100 bus adaptor? Alternately, how hard would it be to interface devices directly to the 40-pin connector? Please keep in mind that I am a hardware cretin who writes device drivers for a living (strange but true). This would be essentially a "first project" as far as the hardware is concerned, but supporting software is not a problem. The pin connections to the internal Z/80 bus are shown below: PIN SIGNAL DESCRIPTION NAME --------------------------- 1 SPARE 2 SYSRES* System Reset Output, Low during Power Up Initialize or Reset Depressed 3 SPARE 4 A10 Address Output 5 A12 Address Output 6 A13 Address Output 7 A15 Address Output 8 GND Signal Ground 9 A11 Address Output 10 A14 Address Output 11 A8 Address Output 12 OUT* Peripheral Write Strobe Output 13 WR* Memory Write Strobe Output 14 SPARE 15 RD* Memory Read Strobe Output 16 SPARE 17 A9 Address Output 18 D4 Bidirectional Data Bus 19 IN* Peripheral Read Strobe Output 20 D7 Bidirectional Data Bus 21 SPARE 22 D1 Bidirectional Data Bus 23 SPARE 24 D6 Bidirectional Data Bus 25 A0 Address Output 26 D3 Bidirectional Data Bus 27 A1 Address Output 28 D5 Bidirectional Data Bus 29 GND Signal Ground 30 D0 Bidirectional Data Bus 31 A4 Address Output 32 D2 Bidirectional Data Bus 33 SPARE 34 A3 Address Output 35 A5 Address Output 36 A7 Address Output 37 GND Signal Ground 38 A6 Address Output 39 +5V 5 Volt Output 40 A2 Address Output -=- Tim Maroney, Carnegie-Mellon University Computation Center ARPA: Tim.Maroney@CMU-CS-K uucp: seismo!cmu-cs-k!tim CompuServe: 74176,1360 audio: shout "Hey, Tim!" "Remember all ye that existence is pure joy; that all the sorrows are but as shadows; they pass & are done; but there is that which remains." Liber AL, II:9.