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Finally, after a bunch of years of waiting and searching I got one!

VERAULT

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Jan 30, 2012
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Connecticut, USA
Owning an S-100 system has been on my list for so many years but it just never happened. The price of Imsai and Altair systems has shot way up I kind of almost gave up looking for a system.

But as things happen one showed up and I just couldn't pass it up.

As of this morning I am the new owner of a Cromemco System One Model CS-1 Ser: 51300

Lots of Photos here: Sorry for the blurry photos. It took hours to clean everything so it was dark when I took the photos : https://photos.app.goo.gl/xXfKznfZAzNQ7H4m9
IMG_20221005_180400.jpg



Its a dual 5.25" floppy unit. And came with the key! Also included are two ADDS Viewpoint VPT-A1 Terminals with keyboards. One unit is missing the "F3" key

There is an Okidata Microline 84 large scale dot matrix printer (what is that connector on the back of the printer for?!)




The absolute best surprise was when I got there and saw the unit for the first time there was something else not discussed or shown in photos. A QUME Dual 8" Floppy drive rackmount unit! It contains two QUMETRAK 842 floppy drives with a power supply.

The downside is the doors to the drives were left open and mice got in. I had a hint when I saw the rear AC fan was full of debris. I took it apart in my garage and sure enough.. A HUGE mouse/rodent nest with its own mummified rodent to boot. I shop vac'd all the grossness out and gave a quick clean of the case just so I can bring it and leave it in my garage (This will not go into my house Until I can rebuild and sanitize it)

After a visual inspection there are about 4 chewed wires so thats not terrible. What is bad is the corrosion brought on by the rodent urine. I am sure I can fix the drives and restore the unit but who knows if the PSU will make it. Considering its a bonus, I am not dissapointed. There are no marking on the external 8" drive cabinet except for a hand written label which I assume is the serial number "QUME 141175"

The drive cabinet must have connected to the rear of the Computer via the large ribbon cable with the card edge connector. What is strange is the cabinet has 2 card edge connectors which each go to one drive. Inside the unit one drive had the power cables disconnected so I am assuming it was only using one drive. Why not add another cable?


So when I first met the young man who was selling it I was happy the unit had the key.. The key turned from off to on to reset. After I got it home and cleaned it the key stopped turning. I moved the slide on the rear where the power is to clean did I change something to lock the key out?

I will admit I know nothing about S-100 computers other than what I have read. If any of you know this system please share some details Id love to know more and learn about this thing.

I read online the CS-1 was the base model with two floppy drives and a Z80 CPU but I was very happy to see the CPU card has a Motorola 68000 cpu also!! I can run Cromix!


Well I spent all afternoon cleaning the thing and I am tired. No I did not try and fire it up. The seller said they never tried to power it up either and I am included to believe them.

Would love to hear what you all think.
 
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VERAULT

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Also forgot to mention the bottom most card (floppy controller card)has an ic has two legs out of socket and the pins are mashed together.. Why?

See the photos
 

hornbetw

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Aug 27, 2013
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Philadelphia,PA area
That weird connector on the Okidata is similar to a V.35 serial connector. Hopefully you got the DB-25(M) to 16 pin male connector cable to hook it up. Since the connector on the cabinet looks like it connects to a parallel output on the interface card and it only has 16 lines, it probably implements an early version of the Centronics parallel port, not the IBM parallel port.
 

VERAULT

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Connecticut, USA
I only see one photo. I’d love to see the 8 inch drive mess.
There is a link with more photos... Can noone see or use the link in the first post?!

Again the link to the photos is https://photos.app.goo.gl/xXfKznfZAzNQ7H4m9 can you guys let me know it works for you? The thread would make no sense without the additional photos.


That weird connector on the Okidata is similar to a V.35 serial connector. Hopefully you got the DB-25(M) to 16 pin male connector cable to hook it up. Since the connector on the cabinet looks like it connects to a parallel output on the interface card and it only has 16 lines, it probably implements an early version of the Centronics parallel port, not the IBM parallel port.
I received no cables other than the 50 pin header for the 8" drive hanging off the back. I dont even have the Terminal serial cables.
 
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Trixter

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Chicagoland, Illinois, USA
Nice find on the Cromemco -- not one of the more common systems floating around out there (it seems like there are many more altairs, imsais, and sols).
 

Chuck(G)

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Jan 11, 2007
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Pacific Northwest, USA
Consider the Altos ACS-8000. Those SA-801s were mounted inverted:
ACS8000-1%20and%20Televideo%20910
 

Chuck(G)

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It also meant that any disk labels went on the backside of the floppy. Very confusing, particularly, if you tried to insert a floppy the "normal" way. Shugart later issued a technical bulletin condemning the strange mounting practice.
 

acgs

Experienced Member
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Apr 24, 2022
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Was it possible to "correct" the problem by turning the entire unit upside down? Then the drives would be right-side up.
 

twolazy

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Nice score there, very jelly. Been wanting to get into S100 systems for a while now. Hopefully will soon, slowly building the collection fund. They sure aren't cheap!

Hoping to it being an easy rehab.
 

VERAULT

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Connecticut, USA
So I will probably create new threads as I am working on the machine but before I do that does anyone know where I can find the configuation manual for the ADDS Viewpoint VPT-A1 Terminals? And since they came sans cable.. Which type of cable should I order to test the terminal? Figure this would be a good first step.
 

Chuck(G)

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The Viewpoints were variations on a theme, so any manual will probably suffice as a reference, say this one for the Viewpoint 60: here
The switch settings for the A2 may be of some help here
 
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