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4 Summary of the HP/Phoenix BIOS
HP/Phoenix BIOS (BIOS version: GJ.07.xx)
System Board Tests
Test External Cache
Tests the level-two cache. A failure causes an error code to display and
disables the external cache.
Shadow SCSI ROM
Tests for the presence of HP SCSI ROMs. If SCSI ROMs are detected, their
contents are copied into the shadow RAM area. A failure will cause an
error code to display.
8042 Self-Test
Downloads the 8042 and invokes the 8042 internal self-test. A failure
causes an error code to display.
Timer 0/Timer 2 Test
Tests Timer 0 and Timer 2. Test failure causes an error code to display.
DMA Subsystem Test
Checks the DMA controller registers. Test failure causes an error code to
display.
Interrupt Controller Test
Tests the Interrupt masks, the master controller interrupt path (by forcing
an IRQ0), and the industry-standard slave controller (by forcing an IRQ8).
Test failure causes an error code to display.
Real-Time Clock Test
Checks the real-time clock registers and performs a test that ensures that
the clock is running. Test failure causes an error code to display.
Memory Tests
RAM Address Line
Independence Test
Verifies the address independence of real-mode RAM (no address lines
stuck together). Test failure causes an error code to display.
Size Extended Memory
Sizes and clears the protected mode (extended) memory and writes the
value into CMOS bytes 30h and 31h. If the system fails to switch to
protected mode, an error code is displayed.
Real-Mode Memory Test
(First 640KB)
Read/write test on real-mode RAM. (This test is not done during a reset
using and ). The test checks each block of
system RAM to determine how much is present. Test failure of a 64 KB
block of memory causes an error code to display, and the test is aborted.
Shadow RAM Test
Tests shadow RAM in 64-KB segments (except for segments beginning at
A000h, B000h, and F000h). If they are not being used, segments C000h,
D000h and E000h are tested. Test failure causes an error code to display.
Protected Mode RAM
Test (Extended RAM)
Tests protected RAM in 64-KB segments above 1 MB. (This test is not
done during a reset using and ). Test failure
causes an error code to display.
Keyboard / Mouse Tests
Keyboard Test
Invokes a built-in keyboard self-test of the keyboard’s microprocessor and
tests for the presence of a keyboard and for stuck keyboard keys. Test
failure causes an error code to display.
Mouse Test
If a mouse is present, invokes a built-in mouse self-test of the mouse’s
microprocessor and for stuck mouse buttons. Test failure causes an error
code to display.