I'd also be interested in a dump of the ROM. It'd be good to archive it if possible.
On Tue, Oct 24, 2023 at 10:20:12PM +0000, Ken St. Cyr wrote: > I don't think you're wrong - all of my M100s are 110CH1X. 1010 > certainly seems to be an earlier revision of the board. Just curious - > what's the date code on the CPU? I can't make it out with the cap in > the way. Also, if you're up for dumping the ROM, it would be > interesting to compare it to a 'released' version. > > //Ken S. > __________________________________________________________________ > > From: M100 <[email protected]> on behalf of Josh Malone > <[email protected]> > Sent: Tuesday, October 24, 2023 12:07 PM > To: [email protected] <[email protected]> > Subject: Re: [M100] Possible M100 prototype. > > Off the top of my head, I don't recognize that artwork number: PLX > 1010H1X. Am I wrong here? > > And, wow, this thing is bodge city. Almost like the Tandy 1400FD that I > have. (that I still don't know the story behind the bodges) > > -Josh > > On Tue, Oct 24, 2023 at 11:38 AM <[1][email protected]> wrote: > > All, > > > I recently attended Tandy Assembly 2023 and Eric Dittman asked me to > recap an M100 that had belonged to Frank Durda an engineer at Tandy. I > did not pay much attention to it at the time but when I took it apart > last night, I was not sure what I was looking at. The PCB is a US type > but has dozens of modifications and is a bit different than any other > one I have seen. > > I then noticed it was missing the TRS-80 Model 100 badge, the FCC label > and it had no serial number. Now I’m thinking this might be a prototype > machine. I took a few quick pictures, link below. I plan to take some > higher quality images and document the modifications as well as I can. > The goal it to get it working but not alter it more than required. The > only caps that look like they are leaking at the 10uf (which are > normally the worst ones), so I will start with those and the memory > battery and see if it springs to life. > > [2]https://1drv.ms/u/s!AtH4vpaZnzX7mKBV07xl8qlMDuc6QA?e=UfFBVx > > Thoughts? > > Jeff BIrt > > References > > 1. mailto:[email protected] > 2. https://1drv.ms/u/s!AtH4vpaZnzX7mKBV07xl8qlMDuc6QA?e=UfFBVx
