About This Video
Here is a detailed look at upgrading a Tandy Radio Shack TRS-80 Color Computer 3 from 512K to a massive 2048K (2MB) memory configuration using the TRIAD+ 2048K SRAM upgrade board and the Pro-Tector+ MMU board.
This video explores one of the more advanced hardware modifications available for the CoCo 3 while preserving and protecting the Hitachi 63B09E CPU and expanding the system far beyond its original factory memory configuration.
Hardware Installed:
- TRIAD+ 2048K SRAM upgrade board
- Pro-Tector+ MMU board
- Hitachi 63B09E CPU protection
Upgrade Benefits:
- Expansion from 512K to 2048K (2MB) of RAM
- Cooler and more efficient SRAM operation
- Protection for critical CPU lines
- Improved reliability when using cartridge and Multi-Pak hardware
Software Demonstrated:
- Sierra On-Line's King's Quest
The TRIAD+ SRAM upgrade runs significantly cooler and more efficiently than many earlier memory expansions while the Pro-Tector+ MMU board helps protect critical CPU lines from damage caused by unstable cartridge or Multi-Pak connections.
After completing the installation, the upgraded Color Computer 3 is demonstrated running Sierra On-Line's classic King's Quest, showcasing the continuing enthusiasm surrounding TRS-80 Color Computer hardware, upgrades, and retro computing preservation.
For more information, check out my Tandy Color Computer 3 System Guide.