Uploaded November 2020 | Updated September 2026, 3 weeks ago
In this video, I convert my trsnic (RetroStore Card) to a TRS-IO board for my TRS-80 Model 4. TRS-IO is a superset of the trsnic which adds FreHD emulation over the network. I perform the circuit updates to make the board TRS-IO-ready, program the GAL, compile the ESP-32 code, flash the ESP-32, and try it out.
It doesn't work the first time, so I end up finding the issue, trying again, and doing a demo of the FreHD over WiFi functionality. This video contains some strong language.
More info on the trisnic and TRS-IO can be found here:
Arno Puder's TRS-IO on GitHub: github.com/apuder/TRS-IO
Peter Cetinski's fork, trsnic, on GitHub: github.com/pski/trsnic
More info on FreHD can be found here (and here):
Inventor's site: vecoven.com/trs80/trs80.html
Ian Mavric's FreHD site: http://members.iinet.net.au/~ianmav/trs80/emulator.htm
Intro (0:00)
Prep (1:56)
Tinning, and Soldering (2:37)
Finished Board (4:27)
Programmig the GAL (5:17)
Compiling TRS-IO (8:11)
Flashing the ESP (8:55)
Configure TRS-IO (11:22)
First Test - FAIL! (13:03)
What Went Wrong (14:30)
Second Test - Boot and Loading Programs (15:38)
Commentary and DeskMate (16:59)
Outro (17:57)
I do these videos unscripted, so I apologize if the in-the-moment descriptions of things are a bit all-over-the-place. If you have any questions/comments about this video, you can find me in any of these fine locations:
The CoCoTALK! Discord Server
The TRS-80 Color Computer (CoCo) group on Facebook
The CoCo Crew Podcast group on Facebook
On the Vintage Computer Forums (vcfed.org)
The TRS-80 Models I-4/4P Group on Facebook
Tandy / Radio Shack Model II /12 / 16 / 16B / 6000 Owner's Group on Facebook
Music:
Sideways Samba by Audionautix (http://audionautix.com) is licensed under a Creative Commons license (creativecommons.org/licenses/by/4.0/legalcode).
Thanks for watching!
In this video, I convert my trsnic (RetroStore Card) to a TRS-IO board for my TRS-80 Model 4. TRS-IO is a superset of the trsnic which adds FreHD emulation over the network. I perform the circuit updates to make the board TRS-IO-ready, program the GAL, compile the ESP-32 code, flash the ESP-32, and try it out.
It doesn't work the first time, so I end up finding the issue, trying again, and doing a demo of the FreHD over WiFi functionality. This video contains some strong language.
More info on the trisnic and TRS-IO can be found here:
Arno Puder's TRS-IO on GitHub: github.com/apuder/TRS-IO
Peter Cetinski's fork, trsnic, on GitHub: github.com/pski/trsnic
More info on FreHD can be found here (and here):
Inventor's site: vecoven.com/trs80/trs80.html
Ian Mavric's FreHD site: http://members.iinet.net.au/~ianmav/trs80/emulator.htm
Intro (0:00)
Prep (1:56)
Tinning, and Soldering (2:37)
Finished Board (4:27)
Programmig the GAL (5:17)
Compiling TRS-IO (8:11)
Flashing the ESP (8:55)
Configure TRS-IO (11:22)
First Test - FAIL! (13:03)
What Went Wrong (14:30)
Second Test - Boot and Loading Programs (15:38)
Commentary and DeskMate (16:59)
Outro (17:57)
I do these videos unscripted, so I apologize if the in-the-moment descriptions of things are a bit all-over-the-place. If you have any questions/comments about this video, you can find me in any of these fine locations:
The CoCoTALK! Discord Server
The TRS-80 Color Computer (CoCo) group on Facebook
The CoCo Crew Podcast group on Facebook
On the Vintage Computer Forums (vcfed.org)
The TRS-80 Models I-4/4P Group on Facebook
Tandy / Radio Shack Model II /12 / 16 / 16B / 6000 Owner's Group on Facebook
Music:
Sideways Samba by Audionautix (http://audionautix.com) is licensed under a Creative Commons license (creativecommons.org/licenses/by/4.0/legalcode).
Thanks for watching!
