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TEI MCS-CPU 8080 CPU Board
by Herb Johnson 02 Jun '16

02 Jun '16

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

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Workbench from hell
by Mike Loewen 02 Jun '16

02 Jun '16

Dave McGuire, someone snuck into your shop. :-) https://hackadaycom.files.wordpress.com/2016/05/williams-workbench.jpg Mike Loewen mloewen(a)cpumagic.scol.pa.us Old Technology http://q7.neurotica.com/Oldtech/

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Workbench from hell
by Herb Johnson 02 Jun '16

02 Jun '16

Actual facts about the bench and person in question: http://www.computerhistory.org/atchm/an-analog-life-remembering-jim-william… https://www.flickr.com/photos/mightyohm/6780036836/in/album-721576294448252… "Workmates respected Jim's privacy and would never dream of taking something from his workspace, in part fostered by Jim's desire to make his workspace look as uninviting as possible." - from the exhibit Herb Johnson -- Herbert R. Johnson, New Jersey USA http://www.retrotechnology.com OR .net

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OT?: PCMCIA Network cards
by Kelly Leavitt 01 Jun '16

01 Jun '16

Anyone need these? I've a drawer full of miscellaneous ones. Will bring next time if anyone wants. 3Com and DLink mostly. Kelly

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Jim Williams' lab
by Jack Rubin 01 Jun '16

01 Jun '16

That ain't messy, that's ANALOGUE!!

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We're getting a CompuPro
by Evan Koblentz 01 Jun '16

01 Jun '16

There is a nice donation arriving in a couple of weeks. As described by the owner: "Godbout CompuPro S-100 bus CP/M-80 microcomputer with dual 8" floppy disc drives, quite a few discs with software, some docs, a Hazeltine Esprit CRT/keyboard terminal, and Xerox Diablo daisy-wheel printer" This is a historic system and I remember Herb showed one a few VCF Easts ago.

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TEI MCS-CPU 8080 CPU Board
by Systems Glitch 01 Jun '16

01 Jun '16

I picked up a TEI MCS-CPU from Jeff Galinat at VCF East XI this year. It's an 8080 CPU board with onboard power-on jump, power-on reset, and MWRITE generation. Jeff didn't have any documentation on it, and I've been unable to find any online, other than mentions in sales literature. I took a little time tonight to go through it, figure out the onboard functions, and get it fully operational: http://www.glitchwrks.com/2016/05/31/tei-8080-cpu Neat little board, though TEI expected you to use the extra features (power-on jump, power-on reset, and MWRITE) in an all-or-nothing fashion: jumper J1 enables or disables everything. I wanted power-on jump and power-on reset, but didn't need MWRITE since I was using a front panel with it, so the writeup includes the trace cut modification I used to disable it. There are convenient vias on either side of the cut, so you can add in socket pins for a removable jumper. The writeup also documents the function of the switches for setting the power-on jump address. As I was working on this board, I noticed that the layout of the basic CPU function (excluding the add-ons) is *very* similar to the IMSAI MPU-A. Can anyone comment on this? Thanks, Jonathan

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Old Apple & other Computers - Free
by Greg Acker 31 May '16

31 May '16

I am moving west and have more old computers than I can take with me. If anyone wants old Apple Macs , SE, Performa, etc, a IIGS, and some Commodore 64 & other stuff free, call me at 724-992-4302. I need rid of it this week and I don’t want to toss it. Please come and rescue it. Greg Acker Merce, PA

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IEEE coverage
by Evan Koblentz 31 May '16

31 May '16

Remember this online Spectrum article from VCF East last month? http://spectrum.ieee.org/tech-talk/geek-life/history/theyre-alive-vintage-c… I'm told it is in the current print edition, too. Cool!

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Wish me luck
by Connor Krukosky 31 May '16

31 May '16

I'm currently packing to drive up to Poughkeepsie today, I start at IBM tomorrow. Wish me luck! I'll try to make it to next weekend's workshop I will be in Boston all of next week for a conference so hopefully I have some down time, also maybe me and Ian can carpool :) -Connor Krukosky

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