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A-4 Power-On Self-Test Error Messages
Writer: Betty Fessenden - Saved by: BLF - Saved date: 6/14/96
Part Number: 213660-001 - File name: APPA
Fatal Error Messages
Message: CMOS RAM TEST FAILED
Description: A walking bit test of CMOS RAM locations 0E (Hex) - 3F (Hex) failed.
Beep Code: 3
Message: DMA CONTROLLER FAULTY
Description: A sequential read/write of the transfer count and transfer address
registers within the primary and secondary DMA controllers failed.
Beep Code: 4
Message: FAULTY DMA PAGE REGISTERS
Description: A walking bit read/write of the 16 DMA controller page registers
starting at location 80 Hex failed.
Beep Code: 0
Message: FAULTY REFRESH CIRCUIT
Description: A continuous read/write test of port 61h found that bit 4 (Refresh
Detect) failed to toggle within an allotted amount of time.
Beep Code: 1
Message: INTERRUPT CONTROLLER FAILED
Description: A sequential read/write of various Interrupt Controller registers failed.
Beep Code: 5
Message: PARITY ERROR AT UNKNOWN LOCATION
Description: Parity error occurred.
Beep Code: None
Message: RAM ERROR AT LOCATION xxxx
Description: RAM error occurred during memory test.
Beep Code: None
Message: ROM CHECKSUM INCORRECT
Description: A checksum of the ROM BIOS does not match the byte value at
F000:FFFF.
Beep Code: 2