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Search: Posts Made By: bugman
Forum: Altair 8800 06-24-2010, 04:58 PM
Replies: 20
Views: 113,940
Posted By bugman
I have a Microbiology degree and work in the...

I have a Microbiology degree and work in the Microbiology Department of a Pharmaceutical Company. Hense "bugs"
Forum: Altair 8800 06-23-2010, 12:49 AM
Replies: 20
Views: 113,940
Posted By bugman
Grant, I just sent you a PM as well. I...

Grant,

I just sent you a PM as well. I would really like to get on the list for one of these units. I finally have the cash ready.
Thanks,
Brian
Forum: Altair 680 04-09-2009, 03:44 PM
Replies: 1
Views: 20,967
Posted By bugman
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,...
Forum: Altair 680 10-06-2008, 02:22 PM
Replies: 1
Views: 30,306
Posted By bugman
Not exactly sure what you mean, but I'll attempt...

Not exactly sure what you mean, but I'll attempt to help. Each segment of four swtiches represents one hexidecimal number. So, to program a hex "A" the switches would be set at 1010 So you are...
Forum: Altair 680 10-06-2008, 02:12 PM
Replies: 1
Views: 24,786
Posted By bugman
Just curious, are you looking towards an actual...

Just curious, are you looking towards an actual terminal for nostalgic reasons only? I ask because it is not needed, any PC old or new can serve as your terminal just fine. And I think it is much...
Forum: Altair 680 07-21-2008, 12:24 AM
Replies: 1
Views: 20,967
Posted By bugman
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...
Forum: Altair 680 06-22-2008, 03:49 PM
Replies: 26
Views: 81,781
Posted By bugman
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...
Forum: Altair 680 06-22-2008, 03:46 PM
Replies: 26
Views: 81,781
Posted By bugman
So far in my experimentation I am finding that I...

So far in my experimentation I am finding that I must set a line delay of about 500ms in hyperterminal to send a basic listing to microsoft basic. Not optimal, but it isn't too bad. Anything less...
Forum: Altair 680 06-20-2008, 11:42 AM
Replies: 26
Views: 81,781
Posted By bugman
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...
Forum: Altair 680 06-19-2008, 08:26 PM
Replies: 26
Views: 81,781
Posted By bugman
I havn't played with VTL-2 yet, but I'm looking...

I havn't played with VTL-2 yet, but I'm looking forward to it. I have used the new flash monitor and loaded basic. The convience is nice. Now I get to finish assembling the back panel tonight. I...
Forum: Altair 680 06-19-2008, 11:24 AM
Replies: 26
Views: 81,781
Posted By bugman
Yes, its been awsome learning how to make it work...

Yes, its been awsome learning how to make it work through the front panel. I've built other kits before, but this gives me the vintage feeling better than anything else I have done.

I really...
Forum: Altair 680 06-19-2008, 02:16 AM
Replies: 26
Views: 81,781
Posted By bugman
All that effort and I'm almost embarrased to say...

All that effort and I'm almost embarrased to say what the solution was. The socket into the motherboard from the mini 32k wasn't seated enough. The trouble is that you can't see the pins make...
Forum: Altair 680 06-18-2008, 11:57 PM
Replies: 26
Views: 81,781
Posted By bugman
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...
Forum: Altair 680 06-18-2008, 08:30 PM
Replies: 26
Views: 81,781
Posted By bugman
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...
Forum: Altair 680 06-18-2008, 03:09 PM
Replies: 26
Views: 81,781
Posted By bugman
Thanks, I'll do some troubleshooting tonight when...

Thanks, I'll do some troubleshooting tonight when I arrive home. I remember that my incoming 16 volts from the PSU is more like 14.7. I could also try tweaking it closer to the speced 16 volts.
...
Forum: Altair 680 06-18-2008, 01:38 PM
Replies: 26
Views: 81,781
Posted By bugman
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.
Forum: Altair 680 06-18-2008, 12:39 PM
Replies: 26
Views: 81,781
Posted By bugman
Yes, it happens when started in the halt mode. ...

Yes, it happens when started in the halt mode. Do you expereince any delay at all when powering up?
Forum: Altair 680 06-18-2008, 11:16 AM
Replies: 26
Views: 81,781
Posted By bugman
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...
Forum: Altair 680 06-17-2008, 03:20 AM
Replies: 1
Views: 43,929
Posted By bugman
Feel free to delete this message. 4009 is listed...

Feel free to delete this message. 4009 is listed as a replacement for 4449. Sorry, jumped the gun!
Forum: Altair 680 06-17-2008, 02:43 AM
Replies: 1
Views: 43,929
Posted By bugman
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...
Forum: Altair 680 06-05-2008, 11:30 AM
Replies: 1
Views: 11,637
Posted By bugman
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...
Forum: Altair 680 06-02-2008, 11:10 AM
Replies: 3
Views: 17,098
Posted By bugman
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...
Forum: Altair 680 06-02-2008, 02:44 AM
Replies: 3
Views: 17,098
Posted By bugman
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....
Forum: Altair 680 05-31-2008, 04:44 PM
Replies: 4
Views: 18,221
Posted By bugman
Kit arrived today. Everything looks awesome....

Kit arrived today.

Everything looks awesome. Definitely a professional job. Can't wait to dig in. Hope I remember what the wife and kids look like when I'm done.

-Brian
Forum: Altair 680 05-31-2008, 03:36 PM
Replies: 10
Views: 89,248
Posted By bugman
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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