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7. Hexadecimal Characters and Particular Characters
of Our Cards
8. Meanings of POST codes
AMI
(00) Going to give control to INT 19H boot loader.
(10) Processor register test about to start, and NMI to be disabled,286 reg. test
about
to start.
(02 )NMI is disabled. Power on delay starting. Power on de- lay starting.286reg.
(03) Power on delay complete. To check so ft reset/power-on. Any initialization
before keyboard BAT is in progress. ROM BIOS checksum(32K at F800:0) passed.
(04) Any initialization before keyboard BAT is complete. Reading keyboard SYS bit,
to check soft reset/power-on. Reading keyboard SYS bit, to check soft reset/power
On. Keyboard controller test with and without mouse passed. 8259 initialization
OK.
(05)Soft reset/power -on determined. Going to enable ROM. i.e. disable
shadow RAM/Cache if any. Going to enable ROM, .i.e. disable shadow RAM/cache
if any. Chipset initialization over, DMA and interrupt controller disabled. CMOS
pending interrupt disabled.
(06) ROM is enabled. Calculating ROM BIOS checksum, and waiting for Keyboard
controller input buffer to be free. Calculating ROM BIOS checksum. Video disabled
and sys- tem timer test begin. Video disabled and system timer counting OK.
(07) ROM BIOS checksum passed .CMOS shutdown register test to be done
next.ROM BIOS checksum passed, Keyboard controller I/B free. Going to issue the
BAT command to keyboard controller. Going to issue the BAT command to
keyboard controller.CH-2 of 8254 initialization half way.CH-2 of 8253 test OK
(08) CMOS shutdown register test done. CMOS checksum calculation to be done
next. BAT command to keyboard controller is issued. Going to verify the BAT
command. Going to verify the BAT command. CH-2 of timer initialization over.
CH-2 delta count test OK.
(09)CMOS checksum calculation is done, CMOS diag byte written. CMOS initialize
to begin. Keyboard controller BAT result verified. Keyboard command byte to be
written next.(09)Keyboard command byte to be written next. CH -1 of timer
initialization o ver. CH-1 delta count test OK.
(0A) CMOS initialization done(if any). Keyboard command byte code is issued.
Going to write command byte data. Going to write command byte data. CH -0 of
timer initialization over. CH-0 delta count test OK.
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