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C128 Diagnostic Instruction and Troubleshooting Manual is Commodore’s service manual for using the C128 diagnostic cartridge and test harness. It explains setup, diagnostic startup, memory/ROM/I/O/sound tests, error meanings, and step-by-step troubleshooting for power, reset, clocks, video, RAM, CPUs, PLA, MMU, VIC, VDC, and CIA chips. |
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