Specifications

CP302 CMOS Setup
ID 21112, Rev. 05Page 4 - 38 ® PEP Modular Computers GmbH
45h Initializes coprocessor
46h --
47h Saves boot_sector_buffer
48h --
49h --
4Ah --
4Bh --
4Ch --
4Dh --
4Eh Checks for USB keyboard
Displays previously detected POST errors. If any, checks for "Halt on" condition
setting and if necessary, waits for keys "F1" or "Del".
4Fh Checks for password entry if necessary
50h Saves CMOS values in stack back to CMOS
51h Switches all ISA PnP devices into "Wait For Key" state
52h USB final initialization
Decompresses embedded PCI Option ROM’s
Assigns IRQ’s to PCI devices
Programs onboard SCSI if present and activated
If ACPI supported: Decompresses and installs ACPI table
Checks for and runs non-video option ROM’s
Switches on ISA option ROM shadowing
Fetches and runs embedded SCSI Option ROM’s
Fetches and runs embedded ISA Option ROM’s
Disables unused shadow areas
Releases lower 32KB of E000 Segment
53h --
54h --
55h --
56h --
57h --
58h --
59h --
5Ah --
5Bh --
Table 4-11: Normal POST Codes after System BIOS is Shadowed
POST Code Action
Table continued on following page
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