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Status January 2017 2
- Maindec D1B1 failed with non repeatable pattern of failure and it tested memory it shouldn't. Real failures were memory locations 6422 and 6522 were reading some bits that should be 1 as zero. Appears program memory was also getting corrupted to cause the inconsistent behavior. Cured by adjusting slice level pot ΒΌ turn counterclockwise. Didn't have time left to perform full memory tuning.
- Teletype interface worked properly this time.
- Known problem is MB3 light is sometimes on or flickers when it should be off. Either bad transistor or connection in front panel.
- Seems to be running OK now. Loaded and ran Focal.