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Chapter 4 141
0x7C Initialize the hardware interrupt vectors from 08 to 0F and from
70h to 77H. Also set the interrupt vectors from 60h to 66H to
zero.
LBT Core
0x41 ROM Pilot Init LBT Core
0x4B Initialize QuietBoot if it is installed. Enable both keyboard and
timer interrupts (IRQ0 and IRQ1). If your POST tasks require
interrupts off, preserve them with a PUSHF and CLI at the
beginning and a POPF at the end. If you change the PIC,
preserve the e
LBT Core
0xDE Initialize and UNDI ROM (fro remote flash) LBT Core
0xC6 Initial and install console for UCR LBT Core
0x4E Display copyright notice. LBT Core
0xD4 Get CPU branding string LBT Core
0x50 Display CPU type and speed LBT Core
0xC9 pretask before EISA init LBT Core
0x51 EISA Init LBT Core
0x5A Display prompt "Press F2 to enter SETUP" LBT Core
0x5B Disable CPU cache. LBT Core
0x5C Test RAM between 512K and 640K. LBT Core
0x60 Determine and test the amount of extended memory available.
Determine if memory exists by writing to a few strategic
locations and see if the data can be read back. If so, perform
an address-line test and a RAM test on the memory. Save the
total extended
LBT Core
0x62 The amount of memory available. This test is dependent on the
processor, since the test will vary depending on the width of
memory (16 or 32 bits). This test will also use A20 as the skew
address to prevent corruption of the system memory.
LBT Core
0x64 Jump to UserPatch1. LBT Core
0x66 Set cache registers to their CMOS values if CMOS is valid,
unless auto configuration is enabled, in which case load cache
registers from the Setup default table.
LBT Core
0x68 Enable external cache and CPU cache if present. Configure
non-cacheable regions if necessary.
LBT Core
0x6A Display external cache size on the screen if it is non-zero. LBT Core
0x6C Display shadow message LBT Core
0xCA post EISA init LBT Core
0x70 Check flags in CMOS and in the TrustedCore data area for
errors detected during POST. Display error messages on the
screen.
LBT Core
0x72 Check status bits to see if configuration problems were
detected. If so, display error messages on the screen.
LBT Core
0x4F Initialize MultiBoot. Allocate memory for old and new MultiBoot
history tables.
LBT Core
0xCD Reclaim console vector after HW vectors initialized. LBT Core
0x7D Initialize Intelligent System Monitoring. LBT Core
POST
Code
Function Phase Component