Digital Equipment HiNote VP 700 Series, Справочное руководство по обслуживанию, Страница: 106 / 149

Troubleshooting
4-21
Code POST Routine Description
8Ch Initialize both of the floppy disks and display an
error message if failure was detected. Check
both drives to establish the appropriate diskette
types in the BIOS data area.
8Fh Count the number of ATA drives in the system
and update the number in bdaFdiskcount.
90h Initialize hard-disk controller. If the CMOS ram is
valid and intact, and fixed disks are defined, call
the fixed disk init routine to intialize the fixed disk
system and take over the appropriate interrupt
vectors.
91h Configure the local bus IDE timing register based
on the drives attached to it.
92h Jump to UserPatch2. See "The POST
Component".
93h Build the MPTABLE for multi-processor boards
94h Disable A20 address line.
95h Check CMOS for CD-ROM drive. Activate CD-
ROM drive
96h Reset segment-register addressibility from 4GB
to normal 64K by generating a Shutdown 8.
97h Create pointer to MP table in Extended BDA.
98h Search for option ROMs. Rom scan the area from C800h
for a length of BCP_ROM_Scan_Size (or to E000h by
default) on every 2K boundry, looking for add on cards
that need initialization.
continued