Category archives: TRS8BIT

I talk about the power supplies which came with the Model III and 4 computers, why they were chosen by Tandy, and which ones are good and worth keeping and which are just not worth wasting time with.

I do a quick repair and restoration of a Model 4 system supplied by a customer in only a couple of days, and I talk about repro Model III/4 floppy controllers and serial interfaces I am now making, as well as the white-cable renew kits for Model III and Model…

I talk about bus connector fatigue which affects some Model I/III/4/P/D computers and what can be done about it.  I talk about a problem with my Model I heavy-duty power supply kits and how to fix it to operate properly. I also finish the Super-Micro II.

I talk about how to fix video non-synchronisation problem which afflicts some Model 4 and 4P Non-Gate Array computers, Part 2 of Building the Super-Micro II, and adding extra floppy drives to a two-drive Model III or 4 which had a hard drive or FreHD.

I start Building the Super-Micro II, a Model 4D with 4cellerator, hi-res graphics, and 3.5in disk drives.  I talk about the Type-II HDA, the card needed to connect F48 to an 8in TRS-80, which is also needed to connect a primary hard drive to the same computers.

I talk about new products for 2021: Alpha-Thing joystick interface for Model I, Goldplug-80 repro for the Model I, and F48 for the 8in TRS-80s, and RFI shield for 4cellerator.  Part 5 (the last part) of the Model 4 mouse project.

I talk about the 4cellerator I make and sell, it’s the repro of the XLR8er processor upgrade for the Model 4, and Part 4 of the Model 4 mouse project.

I talk about the numerical keypads on the Model I, Part 3 of the Model 4 mouse project, and I talk about some complex upgrade projects.

I continue my series on connecting a serial mouse to the Model 4/4P, introduce a new Speed Up modification for the Model III “Sprinter III”, and I also release an Orchestra-85 music synthesizer for the Model I.  I also get the Orchestra-90 working on a Model 4 with a FreHD.

I talk about my visit to Tandy Assembly 2019, I review game software released in 2019 by Cat Mantra, Nickolas Marentes, Peter Cetinski and Jim McClellan, and I start a series on connecting a serial mouse to a Model 4.