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Forum: Altair 8800 09-03-2009, 04:51 PM
Replies: 10
Views: 44,149
Posted By benalford
880-107 1k static memory board

Marty:

You are right my D/C board is different. I have 2 boards from Grant and I will install one of them. These boards use J1.

Thanks once again

Ben
Forum: Altair 8800 08-27-2009, 02:59 AM
Replies: 10
Views: 44,149
Posted By benalford
8800 D/C Board

Marty:

My Bad, ICK is correct. I misread pin 2 for pin 12. As for J1 on 8800 D/C board the end opposite wire connection 39 dead ends. I looked through the board with a strong light. But Ic S...
Forum: Altair 8800 08-24-2009, 12:33 AM
Replies: 10
Views: 44,149
Posted By benalford
880-107 1k static memory board

Marty:

Thanks for the advice. I did check the IC data sheet before I tried anything. I don't do a smoke test.

Since I found the error on the memory board I checked the CPU board and found ICK...
Forum: Altair 8800 08-18-2009, 03:14 PM
Replies: 10
Views: 44,149
Posted By benalford
880-107 1k static memory board

Grant:

I would like to purchase a second memory board. I noticed that pin 11 on ICB is not connected. The schematic shows this pin is connected to +5v.
I tried connecting this pin to +5v but it...
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