Forum: Altair 8800
07-26-2009, 10:33 AM
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Replies: 20
Views: 5,236,151
2sio
I just sent the board back to Geoff to convert back to RS-232. I gave up on TTY simply because if my Teletype breaks down, I won't be replacing it and will need port 0 to be usable by more modern...
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Forum: Altair 8800
07-17-2009, 01:26 PM
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Replies: 20
Views: 5,236,151
Most people didn't buy directly from Teletype...
Most people didn't buy directly from Teletype Corp. and independent vendors frequently installed an RS-232 interface converter internally at the request of the customer. I'm surprised that, even...
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Forum: Altair 8800
07-16-2009, 06:32 PM
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Replies: 20
Views: 5,236,151
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Forum: Altair 8800
07-16-2009, 02:48 PM
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Replies: 20
Views: 5,236,151
2SIO Woe
OK, I was hoping to avoid that but it does seem like it's the only way, given my poor hardware skills. I'll try to get it out tomorrow. Did you include your address on the box? I'm at work right...
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Forum: Altair 8800
07-16-2009, 04:43 AM
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Replies: 20
Views: 5,236,151
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Forum: Altair 8800
07-16-2009, 04:40 AM
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Replies: 20
Views: 5,236,151
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Forum: Altair 8800
07-16-2009, 01:14 AM
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Replies: 20
Views: 5,236,151
You can check it without connecting it to your...
You can check it without connecting it to your Altair. Plug in the Teletype to the AC outlet. Turn the Line/Off/Local knob to Line (all the way counterclockwise if you don't have the front aluminum...
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Forum: Altair 8800
07-16-2009, 12:39 AM
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Replies: 20
Views: 5,236,151
Yes. I have an Advantech PCI-1603 2-port PCI...
Yes. I have an Advantech PCI-1603 2-port PCI board where either port can be configured as either RS-232 or 20mA Current Loop (sound familiar?) by setting jumpers on the board. I bought it...
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Forum: Altair 8800
07-15-2009, 11:17 PM
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Replies: 20
Views: 5,236,151
2SIO Failure
Well, I swapped the two inverters. The problem stayed where it was, the first port only. So both inverters are good. (You probably already knew that.) Where do I go from here?
TIA
Tom Lake
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Forum: Altair 8800
07-15-2009, 11:02 PM
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Replies: 20
Views: 5,236,151
Unfortunately, being a software person, I...
Unfortunately, being a software person, I wouldn't even know what a reasonable signal is. Since the 7404s are socketed, would it help if I swapped them and see if the problem follows the current K...
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Forum: Altair 8800
07-06-2009, 02:49 PM
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Replies: 20
Views: 5,236,151
Altair Replica and Stuff
The computer itself is performing flawlessly. The 2SIO, Port 1 is perfect. I hooked it up to a terminal program on a PC and can run VTL-2. That's a neat language for taking so little memory. On Port...
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