DIGITAL-LOGIC MICROSPACE MSM800SEV Technical User's Manual page 77

DIGITAL-LOGIC AG
Checkpoint Function Name
OAh memRAMoptimize
013h cacheInit
OCh northBridgelnit
ODh chipsetInit
OEh sioTest
OFh pcATjunk
10h intTable
16h equip-check
Ilh memInfo
14h keyboardInit
12h romCopy
15h gxmCacheOff
gxmCacheOn
82h EquipmentCheck
17h pciScan
18h optionRomlnit
19h ResetLimits
81h UserPostInit
lAh Summary-screen
113h
lFh
Intermediate
Codes
---
---
CFh
---
E8h
---
EO
---
60h
61h
6Eh
---
---
---
---
---
DOh
Dlh
D2h
D3h
D4h
D5h
D6h
D7h
DEh
---
---
---
---
---
---
---
--- ---
--- ---
Function Description
SDRAM optimization for CPU speed
Autosize and initialize Cache
Cache failed to size to 16 K113 (i.e., 013h failed)
Load Geode North Bridge PCI register space
Begin register initialize
Load CS55xO with values aka south bridge
Begin register initialize
SIO test/initialize
SIO test entry
SIO present / register initialize
SIO test exit
Various PC/BIOS compatibility pieces
Set up generic interrupt table
Set up BDA for installed hardware
Query memory controller for RAM size, and store it
Wakeup the keyboard controller
SMI Handler, video, keyboard, hard drives, splash
screen, LCD
Get shadow ready for copy
Decompress all images
Call SMI Handler initialization code
Return from SMI Handler initialize VGA BIOS
Initialize LCD Panel
Display splash screen
Hard Disk Drive Initialize
System option ROM scan and initialize / PC132 fixup
romCopy exit
Wiggle cache - if MTEST enabled, cache remains off
Additional BDA initialization, CMOS initialization
Scan PCI bus and enumerate
Scan and call options ROMs from C800-EFFO
Reset all descriptors to real mode I MB size
User added code to be run right before boot
Display summary screen
Attempt to boot via INT 18h then INT 19h
Boot failure - XpressROM halted
77
MSM800 SEV Manual V1.0A