DAJEN SCI
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by Bill Degnan - 08/19/2011 23:41 |
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With help from fellow MARCH member Jon Chapman I was able to get access to the SCI card. I used it in my California Computer Systems 2200 with a Vector Graphics ZCB board (that Jon repaired).
Jon also made an ROM add-on that automatically changes the system to 9600 baud, the default is 110. Summary of DAJEN SCI operations with a ZCB Z80 board (optional) 1. I set up a serial switch box. I plugged each card into the switch box using the ribbon cable A: The ZCB B: The SCI (with null modem adapter) 2. I loaded the system and did not disable the ZCB. It booted into the Northstar Monitor 1.5 as always (9600/8/N/1) and gave me the . prompt 3. I ran the command G D000 to jump to the SCI monitor 4. I switched to channel B, hit return, and got to the SCI > prompt. I switched the terminal to 9600/7/N/1. (Since then I learned I could just boot the ZCB 7/N/1) 5. I was able to run commands using the SCI monitor NEXT - 1. Try using the prom burner on the SCI 2. Try running the SCI in my Altair 8080 style, which is the original CPU intended by DAJEN for it's SCI board. The little jumper wire at the bottom left needs to be pulled out of the upper plug and put into the lower plug, in order to autojump to the monitor. You can see it just below two 74L IC's on the left of the board. In the upper plug position the autojump is disabled. Reply |
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