Bill Degnan wrote:
I wonder if this is the board Roger Amidon wrote the Apple Monitor for?
No, he wrote it for the MITS Altair he bought. Roger said so, in a panel at VCF-East some years ago. You may be confusing "TDL" with "TEI". For TEI docs, I only have docs for the mainframe. Jonathan AKA System Glitch wrote:
I noticed that the layout of the basic CPU function (excluding the add-ons) is *very* similar to the IMSAI MPU-A.
Your Web page is a good examination. It notes even board-trace similarities. It's likely TEI copied the IMSAI and then added their own features. Lots of copying went on in the S-100 era, down to replicating boards completely. If it's that similar, then producing a schematic may be a matter of verifying the board with ohmmeter following (and correcting) the MPU-A schematic. Herb -- Herbert R. Johnson, New Jersey USA http://www.retrotechnology.com OR .net
If it's that similar, then producing a schematic may be a matter of verifying the board with ohmmeter following (and correcting) the MPU-A schematic.
I suspect that's the case. Kind of nice that they didn't use any of the gates in the add-on area for basic CPU board implementation! Thanks, Jonathan
On Thu, Jun 2, 2016 at 10:48 AM, Herb Johnson via vcf-midatlantic < vcf-midatlantic@lists.vintagecomputerfederation.org> wrote:
Bill Degnan wrote:
I wonder if this is the board Roger Amidon wrote the Apple Monitor for?
No, he wrote it for the MITS Altair he bought. Roger said so, in a panel at VCF-East some years ago. You may be confusing "TDL" with "TEI".
Herb..oops yes. My mistake. I confused TDL with TEI.
participants (3)
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Herb Johnson -
Systems Glitch -
william degnan