... Hello Steve, thanks a lot for the schematics. At the moment i have not so many manuals and schematics for the Altair. Mine 8800bt is on the way from UK to...
I had a small batch of brushed aluminum nameplates for the Altair 8800 made if anyone needs one. The MITS logo and blue swoosh are not raised, but the...
John, Send me an email so I can reply to it with picture attachments. This board doesn't provide your full e-mail address and attachments can't be added to...
Hmmmm. I think the number seen in th photo is not the part number, maybe a lot code, date code or? A little digital filtering suggests 4th character from the...
I scraped away the original label and checked again. Very clearly both proms read MF1702R date code 7436 See http://www.cpu-zone.com/1702/DSCF1888.JPG good...
Those look like 1702 (plain) clones made by the Canadian company, Microsystems International. I believe that Intel was selling naked dies to Microsystems...
The difference is that the 1702 (plain) draws a LOT more current during programming than the 1702A's - the upgrade to my programmer accounts for this extra...
The job of the Altair DBL is to load and then execute a second-stage loader which is present in sectors 0-n on track zero of a bootable floppy. The Altair DBL...
Martin, I don't know how (yet) but after doing the mods I no longer get any voltage being sent through the rs232 driver. I need to determine why. All I did...
What I mean is as a "terminal"; for a basic program with an ASCII keyboard. I just picked one up (its in the mail) and due to lack of slots will need to remove...
The Dazzler has abysmally low resolution - in its highest-resolution mode, it produces an image that is 128 pixels X 128 pixels. Assuming a very chunky 5X7...
Thanks, Actually as you recommended I was going to use my Sol-20 as a "terminal"; for now but eventually I wanted my altair to be "standalone". I already have...
Well, you could do what I've done with my Dazzler board... It's in a Cromemco Z-1 computer, together with their D+7A I/O and a pair of their JS-1 joysticks....
If you have an ADS PROMBlaster or PROMBlaster II, you might be interested in the new file folder I created. It contains scans of the hardware and software...
Hi All, I have an Altair 8800 with no serial number sticker and another S-100 based computer both without any documentation. I have taken a picture of each ...
What a strange machine! The front panel isn't really a front panel such as the Altair's - it seems to be some sort of matrix display - 4 rows of 9 LEDs. I'm...
Martin, That is very good to know. I'll just keep them in that little S-100 case then. It is a very strange machine. I can't detach the front panel off this...
Very strange. No ID on the boards at all, eh? Your S-100 board may not be a true S-100, either. It looks too tall- more like the size of the Altair 680's...
I have uploaded pictures of my unknown Z80 Computer for anyone who might be able to identify it and help me to find any documentation that might still exist....
Looks like this computer, made by "Processing Innovations," is a "Speech Aided Modem" (SAM) used as a gateway between hand-held inventory computers and a host...
Mike, Thank you very much for the link. I appreciate it a lot. A Speech-Aided Modem. That is very interesting considering when it was developed. I would ...
http://groups.yahoo.com/group/retro-restore/ Everyone, for the non-Altair specific stuff and just general restoration tips and tricks, Mike Willegal (Apple-1,...
I need a copy of the schematics to troubleshoot a ram problem. I think I have some bad ram chips but I also think there may be something else going on. All I...
Well lacking a copy of the schematics. I looked for the obvious and found a bad connection in a socket. It was a pain to find not having exact schematics,...
If like me, you've been tormented by the single-step portion of Don's popular video on YouTube, I now have closure! At issue is where the computer is...
