B
System Resources
54
Boot block checkpoint codes
D1h
Initializes BIOS stack space for runtime usage.
D3h
Finds space for memory WAD and zero it.
D4h
Gets the CPU brand string.
Checkpoint Code
1
1. Checkpoint codes 088h — 097h are executed only when the force recovery jumper has been
detected at Checkpoint 085h.
Description
080h
Chipset initialization.
081h
Bridge initialization.
082h
CPU initialization.
083h
System timer initialization.
084h
System I/O initialization.
085h
Checks force recovery boot.
086h
Checks BIOS checksum.
087h
Enters BIOS.
088h
Initializes Multi-Processor if present.
089h
Sets Huge Segments.
08Ah
Original Equipment Manufacturer (OEM) special initialization.
08Bh
Initializes PIC and DMA.
08Ch
Initializes memory type.
08Dh
Initializes memory size.
08Eh
Shadows Boot block.
08Fh
Initializes SMM.
090h
System memory test.
091h
Initializes interrupt vectors.
092h
Initializes RTC.
093h
Initializes Video.
094h
Initializes Beeper.
095h
Initializes Boot.
096h
Clears Huge Segments.
097h
Boots to the operating system.
Checkpoint Code Description
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from