Expansion Slots For The TRS-80 Model 12!

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Expansion capability is here for the TRS-80 Model 12! The Tandy Emeritus 7-slot expansion backplane has landed, and combined with my 3D-printed card cage, a full expansion solution is available for your 12. I discuss what's new and improved, build the backplane, install it into my Model 12, and test the result.

When I have availability information, I'll post an update here on the channel.

Music (in order):
None. Just me jabbering

Links:

Chapters:

Intro (0:00)
TE Backplane Features and Differences (2:10)
TE Test Fixture (5:09)
TE Diagnostic Spacer (6:10)
TE Z180 CPU boards (6:59)
Sourcing Parts and Build Notes (8:17)
Documentation (10:45)
Selected Build Segments (12:21)
The Finished Product (13:40)
Revision A and B Differences / Insulators (16:24)
Model 12 Disassembly and Legacy vs. TE Compare (20:56)
Backplane Power Test (23:36)
TE Backplane Installed and First Test (25:07)
Debrief / Outro (28:06)

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 CoCo Nation Discord Server
The TRS-80 Color Computer (CoCo) group on Facebook
The CoCo Crew Podcast group on Facebook
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...)
The Level29 BBS (I'm TJBChris there, too.)
Particles BBS (Guess who I am here? Yeah, TJBChris.)

Thanks for watching!

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THAT thing is GIGANTIC! My mother would probably have called that a mainframe, in the old days. She was always more impressed with the Commodore PET 2001 because it looked much more like a computer than the Apple II - smirk.

hstrinzel

I spot an Optimus DCC deck in the background!

vwestlife

Instead of the jumpers, use FETs to autojump by detecting when a card is plugged in.

richardkelsch

I love your videos... but *please* consider investing in a tripod. The constant hand motion makes me nauseous after a while.

AureliusR

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