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I > INTERSYSTEMS > DPS-1


 

This mini forum is intended to provide a simple means of discussion about the Intersystems DPS-1 computer. If you want to share your own experience or memories, or add relevant information about this system: post a message! For other purposes like sales messages, hardware & software questions or information requests, please use our main forum.

  Click Here to add a message in the forum

 

Friday 18th August 2017
Loretta M. (California, USA)

In my post below, I didn''t finish a sentence.

The company I worked for sold Ithaca Intersystems computers with the usual trusty Televideo terminals, with the monochrome monitors.


Friday 18th August 2017
Loretta M. (California, USA)

Interesting that the guy who started the company added a comment!

In about 1980 or so I went to work for a small computer sales and service company in Oklahoma as the Service Manager. We sold Ithaca Intersystems computers to small businesses and court reporters$ most of our customers had two 8-inch floppy drives and ran C/PM (I think?). Some had Z-80A processors, and later the CPU cards had Z-80B CPUs which could utilize more RAM. Software was the Peachtree accounting software and Wordstar. To copy a file or create a directory, you had to use a program called "PIP" (Peripheral Interface Protocol or something like that), I seem to remember, instead of just a cp command. I had this fabulous system with the front lights and switches. The ones our customers got were plain looking. Wish I could remember more about the models. I can still see the S-100 bus, and those cards sitting into it, though.

There were the usual Televideo monochrome monitor

Besides the Intersystems sales and support, my assistant and I maintained all the ScanData cash register systems for Hardee''s restaurants in the state. Oh, that could be a nightmare.

Those big old 8-inch floppy drives with the Intersystems had to be realigned and serviced every few months, or the stepper motor and head would be unable to read previously formatted floppies! That was a pain in the rear, taking a loaner drive to a customer, making sure it could read their disks, then dragging their drive housing back to the company to use an oscilloscope and special alignment disk to tune it up. It was a mess if their disks couldn''t be read, but none of my customers ever lost their data. I remember how exciting it was when we got the first Winchester (I think) hard drive. Wish I could remember its capacity!

The company I worked for also sold Diablo daisy wheel printers, the 620 and 630 models, to go with the Intersystems computer. Those things were workhorses! The court reporters printed so much stuff on the Disaperf perforated continuous paper that they pounded the heck out of those 630s and they just kept on printing. I think I soldered hundreds of RS-232 connectors, making printer cables for those printers. Pin 2 was transmit, I think, pin 3 was receive, and pin 7 (or 20?) was ground. In those days, purchased computer cables were too expensive, and/or didn''t work with your system, so you had to make a custom one, anyway.

One of the people at Intersystems told me that Carl Sagan used an Ithaca Intersystems computer and Wordstar to write Cosmos.

Later our company went broke due to mismanagement by the CEO and Sales Manager, and I bought one of the systems and ran my own word processing business for awhile, and also serviced the computers for the previous customers for a few years on the side, til they got new IBM PCs. Wish I had kept that computer, the first one I owned.


Friday 20th July 2012
Steven Edelman (USA)

Anyone interesting in knowing more about Intersystems and the DPS-1 feel free to contact me. I starting the company.

Steve Edelman
Edelman@mail.com


Wednesday 22nd February 2012
Peter

As I said a few years ago, the DPS-1 works great. Now I managed to get an additional 2 8" drives so that if these fail, I have spares.
I have been trying to back up all my 8" software (much of it original, serialization diskettes such as MuLISP, MuMath, DRI and MS software et al) so that these can be Enjoyed by the future generations. The systems runs standard CP/M and the disk drives are SSDD drives used as SSSD. It is nice to be able to program using the front panel. I also have many additional boards, such as 256K of RAM (in 4 boards), additional hard disk drive adapters (ST506) and modem.


Thursday 9th February 2012
Tgb417

Ithaca College had 2 or 3 of these units in the 1981 to 1984 period. They used a pair of 8" floppies. They were co figured to boot a CPM from the floppies. The keys were on the front of the unit however you did not have to use them to boot. The units had a psd pascal compiler / environment. The units were used to teach assembly language.


Wednesday 15th September 2010
Peter (Luxembourg)
Welcome!

I have a working Ithaca DPS-1. You can see photos at http://vekinis.com/Computers.html





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