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NCR PC6

Code

Meanings

AA

8088 CPU failure

B1

2764 EPROM checksum failure

B2

8237 DMA controller failure

B3

8253 timer failure

B4

RAM failure. Halts if error in first 64K, otherwise displays MEMORY ERROR.

B5

8259 interrupt controller failure. Displays INTERRUPT FAILURE

B6

RAM Parity error. Displays ERROR IN BASE MEMORY or ERROR ON EXPANSION CARD.

BB

All tests passed

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