Blake PattersonI just stumbled upon this upgrade I would have leapt at a few years back when I was building up my "new" Tandy 1000HX:
Tandy 1000 EX/HX 3-in-1 V2 Adapter --- 640K RAM + 2x Serial + Parallel + XTIDE Upgrade by Rob Krenicki
https://www.ebay.com/itm/197473626636
It looks like the creator of this device, who posted the project to GitHub, has made his last production run, sadly. Several are available still on eBay.
It doesn't look like the RAM expansion has the DMA chip, but that really doesn't much matter. What a great unit. I upgraded my own 1000HX to this spec -- but did it the Hard way (note the capital H).
https://github.com/rkrenicki/Tandy-EX-HX-3in1
#Tandy #Tandy1000 #Tandy1000HX #Tandy1000EX #vintagecomputing #retrocomputing #retrogaming #XTIDE #modernretro #eBay #x86 #TRS80 #RadioShack
Tandy 1000 EX HX 3-in-1 V2 Adapter NEW! RAM + Serial + Parallel XTIDE Upgrade | eBay
This is a drop-in upgrade for the Tandy 1000 EX or Tandy 1000 HX desktop computer. The Ultimate upgrade for the Tandy 1000 Enthusiast who wants it all! Tandy 1000 EX/HX 3-in-1 Version 2 Upgrade. Fully assebled and tested Tandy 3-in-1 V2 device.
Retro Techie