Support Noel's Retro Lab on Patreon: The EPROMs have finally arrived, so let's try replacing the suspect faulty ROM with an EPROM. Along the way we'll run into multiple problems, like rebadged chips, incompatible EPROM programmers, and different chip sizes. Let's see if we can finally get it up and running!
Chapters:
00:00 Intro
00:14 Recap
01:41 Testing bus with ROM removed
02:26 Using a 2732A EPROM
05:15 Backup plan: 27C128
07:12 Building an adaptor for the EPROM
12:21 Testing new EPROM
18:51 Testing without the SRAM
20:11 Reducing the stack size
21:13 Conclusion
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#ti994a #texasinstruments #repair
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