Acer 365 - Manual (Page 77)

C-2 Service Guide
Table C-1 POST Checkpoint List
Checkpoint Description
24h •
PIC(8259) testing & initialization
30h •
System Shadow RAM
34h •
DRAM sizing
3Ch •
Initialize interrupt vectors
4Bh •
Identify CPU brand and type
35h •
PCI pass 0
40h •
Assign I/O if device request
41h •
Assign Memory if device requested
44h •
Assign IRQ if device request
45h •
Enable command byte if device is OK
50h •
Initialize Video display
52h •
Download keyboard matrix
4Ch •
ChipUp initialization for CPU clock checking
54h •
Process VGA shadow region
58h •
Set POST screen mode(Graphic or Text)
•
Display Acer(or OEM) logo if necessary
•
Display Acer copyright message if necessary
•
Display BIOS serial number
59h •
Hook int vector 1ch for POST quiet boot
5Ch •
Memory testing
5Ah •
SMRAM test and SMI handler initialization
4Eh •
Audio initialization
60h •
External Cache sizing
•
External Cache testing(SRAM & Controller)
•
Enable internal cache if necessary
•
Enable external cache if necessary
64h •
Reset KB device
•
Check KB status
Note: The keyboard LEDs should flash once.
7Ch •
Reset pointing device
•
Check pointing device
70h •
Parallel port testing
74h •
Serial port testing
78h •
Math Coprocessor testing
80h •
Set security status
84h
•
KB device initialization
•
Enable KB device