#5 Testing a 27C256 ROM Chip from a TRS-80 Color Computer Out of Circuit @RetroLogicLaboratory
#5 Testing a 27C256 ROM Chip from a TRS-80 Color Computer Out of Circuit @RetroLogicLaboratory
Uploaded November 2016 | Updated September 2026, 2 weeks ago
While trying to fix my Radio Shack Color Computer, I think I discovered that the ROM chip is bad. In this video I test the chip independently of the Coco circuit board using an oscilloscope and signal generator.
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#5 Testing a 27C256 ROM Chip from a TRS-80 Color Computer Out of Circuit

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