Forum: Altair 8800
06-24-2010, 04:58 PM
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Replies: 20
Views: 176,158
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Forum: Altair 8800
06-23-2010, 12:49 AM
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Replies: 20
Views: 176,158
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Forum: Altair 680
04-09-2009, 03:44 PM
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Replies: 1
Views: 28,055
Just as a followup, I came accross an old MIT...
Just as a followup, I came accross an old MIT newsletter than confirmed a table within the editor/assembler is wrong and it doesnt assemble the instruction correctly. You can correct it manually,...
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Forum: Altair 680
10-06-2008, 02:22 PM
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Replies: 1
Views: 48,681
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Forum: Altair 680
10-06-2008, 02:12 PM
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Replies: 1
Views: 33,935
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Forum: Altair 680
07-21-2008, 12:24 AM
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Replies: 1
Views: 28,055
Scelbi's Galaxy Game
I discovered the existence of a book called "Scelbi's Galaxy Game for the 6800". This was back when software was distributed in book format that required it to be typed in. Of course, I was very...
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Forum: Altair 680
06-22-2008, 03:49 PM
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Replies: 26
Views: 98,856
TomL,
Are you saying there is a paper tape...
TomL,
Are you saying there is a paper tape command within basic? For the 680, all I can find is the csave command used in the cassette version for cassette saving. I am not aware of any paper...
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Forum: Altair 680
06-22-2008, 03:46 PM
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Replies: 26
Views: 98,856
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Forum: Altair 680
06-20-2008, 11:42 AM
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Replies: 26
Views: 98,856
No harm done. The main thing that tipped me off...
No harm done. The main thing that tipped me off was when I removed the CPU, the front Panel looked exactly like my intermittent problem. Hence the CPU had intermittent connections which turned out...
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Forum: Altair 680
06-19-2008, 08:26 PM
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Replies: 26
Views: 98,856
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Forum: Altair 680
06-19-2008, 11:24 AM
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Replies: 26
Views: 98,856
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Forum: Altair 680
06-19-2008, 02:16 AM
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Replies: 26
Views: 98,856
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Forum: Altair 680
06-18-2008, 11:57 PM
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Replies: 26
Views: 98,856
The board works by installing the cpu into its...
The board works by installing the cpu into its socket. Then the mini board has through connectors on the bottom that plug into the original cpu socket on the motherboard. If I am reading the info...
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Forum: Altair 680
06-18-2008, 08:30 PM
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Replies: 26
Views: 98,856
I followed your lead in a different way. I...
I followed your lead in a different way. I plugged the 6800 cpu directly into the motherboard without the 32k expansion. All symptoms dissappeared, and it runs fine. So, its something with the cpu...
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Forum: Altair 680
06-18-2008, 03:09 PM
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Replies: 26
Views: 98,856
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Forum: Altair 680
06-18-2008, 01:38 PM
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Replies: 26
Views: 98,856
Any ideas where I should start to look for a...
Any ideas where I should start to look for a problem? Some of the ICs were difficult to insert, and some of the leads had oxidation on them. I was thinking of starting by re-seating some of them.
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Forum: Altair 680
06-18-2008, 12:39 PM
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Replies: 26
Views: 98,856
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Forum: Altair 680
06-18-2008, 11:16 AM
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Replies: 26
Views: 98,856
Up and Running
Well, got it running last night. Have not completed the back panel yet, or tried the terminal interface. But the main board and control board are in and I put power to the mainboard. Seems to be...
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Forum: Altair 680
06-17-2008, 03:20 AM
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Replies: 1
Views: 52,386
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Forum: Altair 680
06-17-2008, 02:43 AM
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Replies: 1
Views: 52,386
IC 4449 confirmation
The literature I have read seems to indicate that the 4009 IC can be used instead of the 4449 IC called for in the manual. Is this true? I ask because I have an extra 4009, but no 4449 and can't...
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Forum: Altair 680
06-05-2008, 11:30 AM
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Replies: 1
Views: 14,844
Capacitor Substitution
Grant,
I'm doubting that it will make any difference to the functionality of the circuit, but I wanted to confirm that it was your intention to substitute some diffent capacitor values from the...
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Forum: Altair 680
06-02-2008, 11:10 AM
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Replies: 3
Views: 23,044
Thanks Grant,
I think the glare coming off...
Thanks Grant,
I think the glare coming off solder points was making it difficult to see on the lower resolution printed pics. Those higher resolution pics helped.
Specifically, I was having...
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Forum: Altair 680
06-02-2008, 02:44 AM
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Replies: 3
Views: 23,044
Front Panel Help
I have reached the point of front panel assembly where the modifications are needed (jumpers, capacitor, resistor). From the pictures, I'm having trouble seing exactly where to make the connections....
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Forum: Altair 680
05-31-2008, 04:44 PM
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Replies: 4
Views: 21,831
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Forum: Altair 680
05-31-2008, 03:36 PM
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Replies: 10
Views: 158,346
Hey Grant,
Received my kit today, thanks. ...
Hey Grant,
Received my kit today, thanks. Just wondering if you could post that memory information. When I get my kit built, I'd like to start working on the memory upgrade (unless you plan on...
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