101

 

Diagnostic LED Decoder

 

Post

 

 

 

 

 

G=Green,R=Red,A=Amber

Description

Code

 

 

 

 

 

 

MSB

 

 

LSB

 

 

 

 

 

 

 

11h

Off

Off

Off

A

Detect Configuration Mode,

 

 

 

 

 

such as CMOS clear.

 

 

 

 

 

 

13h

Off

Off

G

A

Chipset Initialization before

 

 

 

 

 

CMOS initialization.

 

 

 

 

 

 

19h

G

Off

Off

A

Init System Timer: The 8254

 

 

 

 

 

timer test is over. Starting the

 

 

 

 

 

memory refresh test next.

 

 

 

 

 

 

1Ah

G

Off

G

R

Check Refresh Toggle: The

 

 

 

 

 

memory refresh line is toggling.

 

 

 

 

 

Checking the 15 second on/off

 

 

 

 

 

time next.

 

 

 

 

 

 

23h

Off

Off

A

G

Setup Interrupt Vectors: 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

Off

G

R

Off

Before Vector: Configuration is

 

 

 

 

 

required before interrupt vector

 

 

 

 

 

initialization has completed.

 

 

 

 

 

Interrupt vector initialization is

 

 

 

 

 

about to begin.

 

 

 

 

 

 

25h

Off

G

R

G

Init interrupt Vectors: Interrupt

 

 

 

 

 

vector initialization is done.

 

 

 

 

 

 

F2h

R

R

A

R

Initialize SMM handler. Initialize

 

 

 

 

 

USB emulation.

 

 

 

 

 

 

F5h

R

A

R

A

Validate NVRAM areas. Restore

 

 

 

 

 

from backup if corrupted.

 

 

 

 

 

 

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Image 111
Acer R700 manual 101