Check Point

 

Description

 

 

35H

PCI pass 0

 

 

4EH

Scan PnP Devices

 

 

4FH

Config PnP Devices

 

 

40H

Initial PCI (1)

 

 

41H

Initial PCI (2)

 

 

42H

Initial PCI (3)

 

 

44H

Initial PCI (4)

 

 

45H

Initial PCI (5)

 

 

50H

Initializes video display

 

 

NOTE: If system has any display card, it should be initialized via its I/O ROM or

 

 

corresponding initialization program.

 

 

51H

Copy F-seg from ROM into shadow RAM

 

 

54H

Process VGA shadow region

 

 

4CH

Check CPU brand, ID and external frequency

 

 

 

58H

1.

Displays Acer (or OEM) logo (if necessary)

 

2.

Displays Acer copyright message (if necessary).

 

3.

Displays BIOS serial number.

 

 

59H

Hook INT 1CH for Quiet Boot.

 

 

64H

Tests keyboard interface

 

 

NOTE: The keyboard LEDs should flash once.

 

 

5CH

Memory test (except the 384K base memory)

 

 

5EH

Load Pentium Pro CPU update code

 

 

5AH

Test SM RAM

 

 

5FH

Enables/Disables USB Function

 

 

 

60H

1.

Initializes SRAM cache capacity

 

2.

Enables the cache function

 

 

70H

Initializes parallel port(s)

 

 

74H

Initializes parallel port(s)

 

 

78H

Reset math coprocessor

 

 

7CH

Check and initialize pointing device

 

 

80H

Set security status

 

 

82H

Prepare entering SETUP for user pressing CTRL + ALT DEL.

 

 

84H

Keyboard device initialization

 

 

 

6CH

1.

Tests and initializes FDD

 

2.

The FDD LED should flash once and its head should be positioned

 

 

 

88H

1.

Sets HDD type and features (i.e. transfer speed, mode,....)

 

2.

Tests HDD controller

 

 

90H

Displays POST status

 

 

93H

Rehook INT 1CH for Quiet Boot

 

 

 

94H

1.

Initializes I/O ROM

 

2.

I/O ROM is an optional extension of the BIOS located on an installed add-on card as

 

 

part of the I/O subsystem. POSt detects I/O ROMs and gives them opportunity to

 

 

initialize themselves and their hardware environment.

 

 

96H

Initializes PCI I/O ROM

 

 

A0H

Sets time and day

 

 

A4H

Initializes security features

 

 

A2H

Initializes setup items

 

 

A8H

Setup SMI parameters

 

 

 

66

Chapter 4

Page 74
Image 74
Acer power sx/sxb/sc manual 4EH, 4FH, 4CH, 5CH, 5EH, 5AH, 5FH, 7CH, 6CH, A0H, A4H, A2H, A8H