BIOS


Mylex 386 BIOS: - 3


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Beeps

Description

1-1-1-3

Verify real mode

1-1-2-1

Get CPU type

1-1-2-3

Initialize system hardware

1-1-3-1

Initialize chipset registers with initial values

1-1-3-2

Set in POST flag

1-1-3-3

Initialize CPU registers

1-1-4-1

Initialize cache to initial values

1-1-4-3

Initialize I/O

1-2-1-1

Initialize power management

1-2-1-2

Load alternative registers with initial POST values

1-2-1-3

Jump to UserPatch0

1-2-2-1

Initialize timer initialization

1-2-3-1

8254 timer initialization

1-2-3-3

8237 DMA controller initialization

1-2-4-1

Reset Programmable Interrupt Controller

1-3-1-1

Test DRAM refresh

1-3-1-3

Test 8742 Keyboard Controller

1-3-2-1

Set ES segment register to 4GB

1-3-3-1

Autosize DRAM

1-3-3-3

Clear 512K base memory

1-3-4-1

Test 512K base address lines

1-3-4-3

Test 51K base memory

1-4-1-3

Test CPU bus-clock frequency

1-4-2-1

CMOS RAM read/write failure (this commonly indicates a problem on the ISA bus such as a card not seated)

1-4-2-4

Reinitialize the chipset

1-4-3-1

Shadow system BIOS ROM

1-4-3-2

Reinitialize the cache

1-4-3-3

Autosize the cache

1-4-4-1

Configure advanced chipset registers

1-4-4-2

Load alternate registers with CMOS values

2-1-1-1

Set initial CPU speed

2-1-1-3

Initialize interrupt vectors

2-1-2-1

Initialize BIOS interrupts

2-1-2-3

Check ROM copyright notice

2-1-2-4

Initialize manager for PCI Options ROMs

2-1-3-1

Check video configuration against CMOS

2-1-3-2

Initialize PCI bus and devices

2-1-3-3

initialize all video adapters in system

2-1-4-1

Shadow video BIOS ROM

2-1-4-3

Display copyright notice

2-2-1-1

Display CPU type and speed

2-2-1-3

Test keyboard

2-2-2-1

Set key click if enabled

2-2-2-3

Enable keyboard

2-2-3-1

Test for unexpected interrupts

2-2-3-3

Display prompt "Press F2 to enter setup"

2-2-4-1

Test RAM between 512K and 640K

2-3-1-1

Test expanded memory

2-3-1-3

Test extended memory address lines

2-3-2-1

Jump to UserPatch1

2-3-2-3

Enable external and CPU caches

2-3-2-3

Configure advanced cache registers

2-3-3-1

Enable external and CPU caches

2-3-3-2

Initialize SMI handler

2-3-3-3

Display external cache size

2-3-4-1

Display shadow message

2-3-4-3

Display non-disposable segments

2-4-1-1

Display error messages

2-4-1-3

Check for configuration errors

2-4-2-1

Test real-time clock

2-4-2-3

Check for keyboard errors

2-4-4-1

Setup hardware interrupt vectors

2-4-4-3

Test coprocessor if present

3-1-1-1

Disable onboard I/O ports

3-1-1-3

Detect and install external RS232 ports

3-1-2-1

Detect and install external parallel ports

3-1-2-3

Reinitialize onboard I/O ports

3-1-3-1

Initialize BIOS Data Area

3-1-3-3

Initialize Extended BIOS Data Area

3-1-4-1

Initialize floppy controller

3-2-1-1

Initialize hard disk controller

3-2-1-2

Initialize local bus hard disk controller

3-2-1-3

Jump to UserPatch2

3-2-2-1

Disable A20 address line

3-2-2-3

Clear huge ES segment register

3-2-3-1

Search for option ROMs

3-2-3-3

Shadow option ROMs

3-2-4-1

Setup power management

3-2-4-3

Enable hardware interrupts

3-3-1-1

Set time of day

3-3-1-3

Check key lock

3-3-3-1

Erase F2 prompt

3-3-3-3

Scan for F2 keystroke

3-3-4-1

Enter SETUP

3-3-4-3

Clear in-POST flag

3-4-1-1

Check for errors

3-4-1-3

POST done - prepare to boot operating system

3-4-2-1

One beep

3-4-2-3

Check password (optional)

3-4-3-1

Clear global descriptor table

3-4-4-1

Clear parity checkers

3-4-4-3

Check virus and backup reminders

4-1-1-1

Try to boot with INT 19

4-2-1-1

Interrupt handler error

4-2-1-3

Unknown interrupt error

4-2-2-1

Pending interrupt error

4-2-2-3

Initialize option ROM error

4-2-3-1

Shutdown error

4-2-3-3

Extended Block Move

4-2-4-1

Shutdown 10 error

4-2-4-3

Keyboard Controller failure (most likely problem is with RAM or cache unless no video is present)

4-3-1-3

Initialize the chipset

4-3-1-4

Initialize refresh counter

4-3-2-1

Check for Forced Flash

4-3-2-2

BIOS ROM is OK

4-3-2-4

Do a complete RAM test

4-3-3-1

Do OEM initialization

4-3-3-2

Initialize interrupt controller

4-3-3-3

Read in bootstrap code

4-3-3-4

Initialize all vectors

4-3-4-2

Initialize the boot device

4-3-4-3

Boot code was read OK

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