Uploaded March 2022 | Updated September 2026, 2 weeks ago
My TRS-80 Model III gets a RAM upgrade from 16K to 48K. After the upgrade, I check the available memory in BASIC, and finally boot my TRS-IO (masquerading as a FreHD), start LDOS 5.3.1, and run a reolcating memory test. Finally, a new RAM size badge is installed and we button it up and play around in LDOS a bit.
Links:
Replacement case badges for TRS-80s can be found on Jay Newirth's website (newSOFT): plaidvest.com/newsoft
The BASIC program for FreHD/TRS-IO boot can be found in the comments here: github.com/apuder/TRS-IO/issues/23
Music: Lukewarm Hazy by Asher Fulero
(Taken from the YouTube Audio Library)
Chapters:
Intro (0:00)
Revisitng My Thoughs About Case Repainting (1:03)
The Plan and System Disassembly (2:12)
Installing the new RAM and Jumper Settings (3:16)
A BASIC Memory Size Check and New RAM Badge (5:12)
TRS-IO/FreHD Boot Using BASIC (6:55)
Getting the Memory Test Onto The LDOS Image (9:31)
Running the Memory Test (10:24)
Playing Around in LDOS (12:44)
What's Next/Outro (13:55)
I do these videos unscripted, so I apologize if the in-the-moment descriptions of things are a bit scattered. If you have any questions/comments about this video, you can find me in any of these fine locations:
The Tandy Discord Server
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
Twitter (I'm TJBChris there, too...)
Thanks for watching!
My TRS-80 Model III gets a RAM upgrade from 16K to 48K. After the upgrade, I check the available memory in BASIC, and finally boot my TRS-IO (masquerading as a FreHD), start LDOS 5.3.1, and run a reolcating memory test. Finally, a new RAM size badge is installed and we button it up and play around in LDOS a bit.
Links:
Replacement case badges for TRS-80s can be found on Jay Newirth's website (newSOFT): plaidvest.com/newsoft
The BASIC program for FreHD/TRS-IO boot can be found in the comments here: github.com/apuder/TRS-IO/issues/23
Music: Lukewarm Hazy by Asher Fulero
(Taken from the YouTube Audio Library)
Chapters:
Intro (0:00)
Revisitng My Thoughs About Case Repainting (1:03)
The Plan and System Disassembly (2:12)
Installing the new RAM and Jumper Settings (3:16)
A BASIC Memory Size Check and New RAM Badge (5:12)
TRS-IO/FreHD Boot Using BASIC (6:55)
Getting the Memory Test Onto The LDOS Image (9:31)
Running the Memory Test (10:24)
Playing Around in LDOS (12:44)
What's Next/Outro (13:55)
I do these videos unscripted, so I apologize if the in-the-moment descriptions of things are a bit scattered. If you have any questions/comments about this video, you can find me in any of these fine locations:
The Tandy Discord Server
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
Twitter (I'm TJBChris there, too...)
Thanks for watching!
