DAJEN SCI
SHARE |
|
|
by Bill Degnan - 08/19/2011 23:41 |
|
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 |
|
Resources:
Popular Topics and FAQs
Past Issues:
Before we switched over to a blog format, past page archives here:
Vintage Computer Festival East 3.0 June 2006
Commodore B Series Prototypes July 2006
VOLSCAN - The first desktop computer with a GUI? Oct 2006
ROBOTS! - Will Robots Take Over? Nov 2006
Magnavox Mystery - a Computer, or? Jan 2007
The 1973 Williams Paddle Ball Arcade Computer Game Feb 2007
The Sperry UNIVAC 1219 Military Computer May 2007
VCF East 2007 - PET 30th Anniversary June/July 2007
The Electronic Brain August 2007
Community Memory and The People's Computer Company October 2007
Charles Babbage's Calculating Machine December 2007
Vintage Computing - A 1983 Perspective February 2008
Laptops and Portables May 2008
From Giant Brains to Hobby Computers - 1957 to 1977 August 2008
Historic Computer Magazines November 2008
World's Smallest Electronic Brain - Simon (1950) December 2008 - Feb 2009
Free Program Listings Spring 2009
Computer Music Summer 2009
Popular Electronics Jan/Feb 1975 - Altair 8800 Fall 2009
Early Microcomputer Mass Storage Summer 2010
DEC Microvax 3100 VT100
This image was selected at random from the archive. Click image for more photos and files from this set.