Phoenix BIOS Beep Codes

Note - Phoenix BIOS emits three sets of beeps, separated by a brief pause. Code Description 1-1-3 CMOS read/write failure 1-1-4 ROM BIOS checksum error 1-2-1 Programmable interval timer failure 1-2-2 DMA initialisation failure 1-2-3 DMA page register read/write failure 1-3-1 RAM refresh verification failure 1-3-3 First 64k RAM chip or data line failure 1-3-4 First 64k RAM odd/even logic failure 1-4-1 Address line failure first 64k RAM 1-4-2 Parity failure first 64k RAM 2-_-_ Faulty Memory 3-1-_ Faulty Motherboard 3-2-4 Keyboard controller Test failure 3-3-4 Screen initialisation failure 3-4-1 Screen retrace test failure 3-4-2 Search for video ROM in progress 4-2-1 Timer tick interrupt in progress or failure 4-2-2 Shutdown test in progress or failure 4-2-3 Gate A20 failure 4-2-4 Unexpected interrupt in protected mode 4-3-1 RAM test in progress or failure>ffffh 4-3-2 Faulty Motherboard 4-3-3 Interval timer channel 2 test or failure 4-3-4 Time of Day clock test failure 4-4-1 Serial port test or failure 4-4-2 Parallel port test or failure 4-4-3 Math coprocessor test or failure Low 1-1-2 System Board select failure Low 1-1-3 Extended CMOS RAM failure .