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Appendix A
memory size for relocation /shadow. DMA page register test complete.
(50)Protected mode.
(50)Write all the CMOS values currently in the BIOS stack areas back into the
CMOS. Write CMOS; Write all CMOS values back to RAM and clear screen.
(50)Check for dual freq in CMOS.
Chips & Tech (50)Hardware initialize.
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(50)Display CPU type and speed.(Beep)=2-2-1-1.(50)Per- form LSL instruction
test.[Beep]=none Custom chip set or custom platform.
Error Code - 51
(51)Memory size display adjusted due to relocation/shadow. Memory test above 1M
to follow. DMA unit-1 base register test about to start.
(51)Protected mode.
(51)Pre-boot enable; Enable parity checker; Enable NMI, Enable cache before boot. (51)Check
CMOS VDU configuration.
Chips & Tech (51)Timer Initialize
Phoenix (51)In
itialize EISA board.
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Error Code
-
52
Compaq
(52)Memory testing/initialization below 1M complete. Going to save memory size
information. Going to prepare to go back to real mode. DMA unit-1 channel OK,
about to begin CH-2.
(52)Initialize all ISA ROMs. Later PCI initializations(PCI BIOS only).PnP initializations(PnP
BIOS only).Program shadow RAM according to setup settings. Program parity according to
setup setting. Power Management initialization. Initialize option ROMs; initialize any option
ROMs present from C8000h to
EFFFFh.
(52)Start VDU search.
Chips & Tech (52)DMA controller initialize.
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(52)Test keyboard.(Beep)=2-2-1-3.(52)Perform LAR instruction test.
Error Code - 53
(53)Memory size information is saved. CPU registers are saved. Going to enter in
real mode. DMA CH-2 base register test OK.
(53)If it is not a PnP BIOS, initialize serial & parallel ports. Initialize time value in
BIOS data area. Initialize time value; Initialize time value in 40h BIOS data area. (53)Vector to
VDU option ROMs.
Chips & Tech (53)Initialize interrupt controller.
Error Code
-
54
ACER (54)#7 shutdown.
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Compaq
(54)Shutdown successful, CPU in real mode. Going to re- store registers saved
during preparation for shutdown. About to check F/F latch for unit-1 and unit-2. (54)Initialize
primary display adapter.
Chips & Tech (54)Chip-Set Initialize.
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(54)Set key click if enabled.(Beep)=2-2-2-1.(54)Perform VERR instruction test.
Error Code - 55
(55)Registers restored. Going to disable gate A20 address line. F/F latch for both
units checked.
(55)Check PCI video Card-or replace video card.
(55)Initialize secondary display adapter.
Chips & Tech (55)EMS configuration Setup.
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Compaq
Error Code
-
56
(56)A20 address line disable successful. BIOS ROM data area about to be checked.
DMA unit 1 and 2 programming over and about to initialize 8259 interrupt
controller.
(56)No display adapters installed.
Chips & Tech (56) Protected mode.
Phoenix
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Compaq
(56)Enable keyboard.(Beep)=2-2-2-3.Unexpected exception.
Error Code - 57
(57)A20 address line disable successful. BIOS ROM data area check halfway. BIOS
ROM data area check to be com- plete.8259 initialization over.
(57)Init primary VDU mode.
Chips & Tech (57)Memory size.
ACER (58)#6 shutdown.
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Error Code
-
58
(58)Memory size adjusted for relocation/shadow. Going to clear Hit<DEL>
message. BIOS ROM data area check over. Going to clear Hit<ESC> message.8259
mask register check OK.
(58)Start of VDU test (for each adapter).
Chips & Tech (58)Memory interleave configure.
Phoenix
(58)Test for unexpected interrupts.(Beep)=2-3-3-.(58) Perform A20 gate test.
Error Code - 59
15