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Acer Altos G300 Series User Manual

Page 136

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Appendix A: AMIBIOS POST Checkpoint Codes

124

0Eh

The keyboard controller BAT command result has
been verified. Next, performing any necessary
initialization after the keyboard controller BAT
command test.

0Fh

The initialization after the keyboard controller BAT
command test is done. The keyboard command
byte is written next.

10h

The keyboard controller command byte is written.
Next, issuing the Pin 23 and 24 blocking and
unblocking command.

11h

Next, checking if or keys were
pressed during power on. Initializing CMOS RAM if
the Initialize CMOS RAM in every boot AMIBIOS
POST option was set in AMIBCP or the key
was pressed.

12h

Next, disabling DMA controllers 1 and 2 and
interrupt controllers 1 and 2.

13h

The video display has been disabled. Port B has
been initialized. Next, initializing the chipset.

14h

The 8254 timer test will begin next.

19h

The 8254 timer test is over. Starting the memory
refresh test next.

1Ah

The memory refresh line is toggling. Checking the
15 second on/off time

next.

23h

Reading the 8042 input port and disabling the
MEGAKEY Green PC feature next. Making the BIOS
code segment writable and performing any
necessary configuration before initializing the
interrupt vectors.

24h

The configuration required before interrupt vector
initialization has completed. Interrupt vector
initialization is about to begin.

Checkpoint Code

Description

aa300.book Page 124 Tuesday, December 17, 2002 5:27 PM

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