gold recovery

[Roger Hanscom]

Hi,

I've got a pile of S-100 cards that appear to have gold flashed connectors.  Are there any gold recovery aficionados in SRCS who might want these cards for gold recovery?  I hate just to toss them.  There are 8 cards, so 800 gold flashed bus connection pads.

Roger

[Clay Erickson]

If it is okay with you, I would rather much preserve the cards and see if I can get an S100 system running again (I used to have a California Computer Systems S-100 and am interested in somehow rebuilding an S-100).

Unless someone else in our group wishes to save these cards first...  ;-)

Clay.

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[Roger Hanscom]

I had no idea that there would be interest in actually using these cards for their original purpose.  There are 8 of them, but one has a missing trace between +8v and the input to the LM323 5v regulator.  I think it can easily be repaired.  Here are photos of one of them.  They are in excellent shape.  Apparently lots of 74S and 74F TTL required (they are after all supposed to be 6 and 8 MHz capable).  It would be easiest for me to pass them off at a SRCS meeting, but I can send them if the recipient would pay the postage.  I have documentation, but there is no schematic.

Roger

[Clay Erickson]

Hi Roger.

Picking them up at the next SRCS meeting works for me.

Missing trace, huh?  That's what bodge wires are for, right?...  ;-)

Thank you.

Clay

On 11/7/23 16:30, Roger Hanscom wrote:

I had no idea that there would be interest in actually using these cards for their original purpose.  There are 8 of them, but one has a missing trace between +8v and the input to the LM323 5v regulator.  I think it can easily be repaired.  Here are photos of one of them.  They are in excellent shape.  Apparently lots of 74S and 74F TTL required (they are after all supposed to be 6 and 8 MHz capable).  It would be easiest for me to pass them off at a SRCS meeting, but I can send them if the recipient would pay the postage.  I have documentation, but there is no schematic.

Roger

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[Mike Begley]

Any chance these are California Computer Systems boards?  I'm trying to assemble a board set from one.  If there's any of those in the pile I'd be pretty interested in them!

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From: seattle-...@googlegroups.com <seattle-...@googlegroups.com> on behalf of Roger Hanscom <norwe...@gmail.com>
Sent: Tuesday, November 7, 2023 1:03:38 PM
To: SRCS mailing list <seattle-...@googlegroups.com>
Subject: [SRCS] gold recovery

 

Hi,

I've got a pile of S-100 cards that appear to have gold flashed connectors.  Are there any gold recovery aficionados in SRCS who might want these cards for gold recovery?  I hate just to toss them.  There are 8 cards, so 800 gold flashed bus connection pads.

Roger

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[Clay Erickson]

If you are interested in saving them, you are welcome.  I just don't want to see them get trashed.

I had a California Computer System long ago while attending CWU; I still wish I had it.  I started with 2 Shugart 801s and later upgraded to 2 Qume drives.  Also managed to get a 360K 5.25 drive to work with the system (back when these were plentiful and 720K 3.5 drives were making their appearance in the PC world).  Also had a DEC serial printer, attached to a third-party 4-port serial card.  Had to modify the CP/M kernel to provide a simple routine to service the PRN: device.  Oh, what memories.  :-D

The photo does not look much like any of the boards I had (even if this one was unpopulated).  Still anything that is S-100 should work on a CCS, I would imagine.  S-100 was practically the ISA bus of the 70s.  ;-)

Clay.

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[geneb]

What's the make & model of the boards?

g.

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[roger]

On Thursday, November 9, 2023 at 10:27:20 PM UTC-8 geneb wrote:

>> What's the make & model of the boards?

Hi Gene,

From what is silk screened on the board:  Intercontinental Micro Systems CPS-BMX 128K banked slave (C) 1984.  Some are rated as 6MHz others at 8.

Seems to me that Intercontinental Micro Systems went out of business, or was sold to another S-100 outfit at some point?  Don't know for sure.

Roger

[geneb]

Something clogged the mail queue - I sent that response days ago. :)

It sounds to me like a RAM card for a TurboDOS or MP/M system.

[roger]

On Friday, November 10, 2023 at 8:30:34 AM UTC-8 geneb wrote:

>> Something clogged the mail queue - I sent that response days ago. :)

Oooppss....

>> It sounds to me like a RAM card for a TurboDOS or MP/M system.

No, they are a slave Z80 computer on a single board.  They support two banks of 64k DRAM on the card.  And, yes, they are designed to run TurboDOS.

Complete documentation can be found here:

http://www.s100computers.com/Hardware%20Manuals/IMS/ICM_CPS-MX_S-100_Bus_Single_Board_Slave_Processor_Feb83.pdf

Roger