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Here is a question - how come that extremely popular projects like FreHD https://github.com/veco/FreHDv1 - literally, hundreds of FreHDs out there! - are hugely outnumbered in the number of Github Stars by PCB replica projects such as https://github.com/RetroStack/TRS-80-Model-I-G-E1 I am...

https://www.ebay.com/itm/355650725594

https://www.ebay.com/itm/355641038342

PicoRAM 6116: https://github.com/lambdamikel/picoram6116 Code attached; just rename TXT.MPF -> MPF, put it on PicoRAM 6116's SD Card, load, start with: G F800. Enjoy!

PM me if interested.

A little know procedure for dumping the firmware of old TMS 1000 family devices. Here, applied to the Science Fair Microcomputer Trainer: Dumping TMS 1100 Firmware (Hackaday) Inferring obfuscated ROM code on the TMS 1100 (Hackaday) I have successfully applied the procedure to the TMS 1600...

... this has been a real pain point for many Euro PC restorers: https://github.com/lambdamikel/europc-keyboard

https://github.com/lambdamikel/picoram6116

I have made a few videos about the educational machines / "CPU trainers" in my collection - apologies for poor English in advance ;) https://www.youtube.com/playlist?list=PLvdXKcHrGqhe_Snxh4nh8RMDz2SiUDCHH

Folks, my CoCo SDC works fine in my CoCo II (US Rev B), and I just updated the firmware yesterday. However, I can't get it to work in my TANO Dragon. I have set the jumpers like in the picture attached, and I am getting the DOSPLUS 5.0. However, from there, I am unable to do anything. Trying to...

Interested in learning Forth on the Microprofessor? Maybe I can interest you in my videos: I also have a Hackaday Project page: https://hackaday.io/project/183618-exploring-the-microprofessor Cheers, Michael

Folks, does anybody have a working FORTH ROM? The one that I found online (attached) is giving me the TRAP... I just tried to burn this on a normal 2764. The ROM is being listed in the menu, but I can't start it. I am unable to find any further documentation or alternatives of this ROM. So if...

So, I got this wand a while ago. First time I am trying to get it to work now - I am noticing that it cannot be the original Tandy wand, as it looks different and does not have a "scan" button. The LED comes on, but I was not able to scan anything. I used the driver here and programs here; tried...

If you should have a spare, or a Model 100 for sale, please let me know :)

My display went bad. Tried to fix it (even the display zebra stripes), but to no avail. Please contact me if you should have a spare Model 100 or display that you'd be willing to sell! Thanks

So, I got this very nice drive from eBay. I already swapped the belt. It was an oily mass... I only wish the owner hadn't declared it as "fully functional"... and of course, cables, power adapter, manual and utility disk are missing. Could you guys help me out? I am looking for: 1. the...

I saw a few other MCB-1 posts here on the forum - just wondering if these users are still active and managed to get their systems running? I acquired my MCB-1 about 5 years ago and never got to do anything with it because of the lack of good documentation. Recently, I did a deep dive into the...

Well, it is actually an S-100 system (it has the bus), but it is more accurately classified as a single board educational system. Does anybody happen to have the manual / EPROM listing of the monitor? Alternatively, what is a good tool to disassemble the EPROM? I have the BIN file. I think I...

Anybody know what that is - and if it is worth the 5 k ;) (Not going to get it, no worries...) https://www.ebay.com/itm/Vintage-TRS-80-Emulator-One-of-a-Kind-Briefcase-Computer-COOL-HISTORICAL-PC-RARE/154112339487