Uploaded April 2023 | Updated September 2026, 3 weeks ago
Meet my Tandy 2500 SX/25! I do an overview of the system and then upgrade the video RAM from 256K to 512K using MT4C1664Z-10 ZIP chips. I also go over the motherboard and how this system differs from its cousin, the Tandy 2500 RSX. After verifying the upgrade works, I configure Windows 3.1 and demo some Windows software which requires a 256-color video mode: Microsoft Encarta and Microsoft Wine Guide. The video during the demo portion is a tad washed-out...sorry. I couldn't tell on my camera's LCD.
The Tandy 2500 RSX motherboard picture was from Part 2 of Retro Tech Time's restoration of his 2500 RSX: youtube.com/watch?v=kGGqZkAqpB8 Check out his channel!
Music (in order):
Carnival De Brazil by Doug Maxwell (from The YouTube Audio Library)
Chapters:
Intro (0:00)
Basic System Specs & Some Additions (1:08)
System Disassembly (3:12)
A Look At The Motherboard / 2500 RSX Differences / More Additions (4:28)
A Look At The RAM / The Upgrade (6:53)
Testing It Out (9:59)
Reconfigure Windows / Start / 256-Color Wallpaper (12:14)
Microsoft Encarta (14:20)
Microsoft Wine Guide (19:47)
Outro (24:09)
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
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...)
The Level29 BBS (I'm TJBChris there, too.)
Particles BBS (Guess who I am here? Yeah, TJBChris.)
Thanks for watching!
Meet my Tandy 2500 SX/25! I do an overview of the system and then upgrade the video RAM from 256K to 512K using MT4C1664Z-10 ZIP chips. I also go over the motherboard and how this system differs from its cousin, the Tandy 2500 RSX. After verifying the upgrade works, I configure Windows 3.1 and demo some Windows software which requires a 256-color video mode: Microsoft Encarta and Microsoft Wine Guide. The video during the demo portion is a tad washed-out...sorry. I couldn't tell on my camera's LCD.
The Tandy 2500 RSX motherboard picture was from Part 2 of Retro Tech Time's restoration of his 2500 RSX: youtube.com/watch?v=kGGqZkAqpB8 Check out his channel!
Music (in order):
Carnival De Brazil by Doug Maxwell (from The YouTube Audio Library)
Chapters:
Intro (0:00)
Basic System Specs & Some Additions (1:08)
System Disassembly (3:12)
A Look At The Motherboard / 2500 RSX Differences / More Additions (4:28)
A Look At The RAM / The Upgrade (6:53)
Testing It Out (9:59)
Reconfigure Windows / Start / 256-Color Wallpaper (12:14)
Microsoft Encarta (14:20)
Microsoft Wine Guide (19:47)
Outro (24:09)
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
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...)
The Level29 BBS (I'm TJBChris there, too.)
Particles BBS (Guess who I am here? Yeah, TJBChris.)
Thanks for watching!
