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Checkpoint
Beep Code
Code
7Eh
80h
81h
82h
83h
84h
85h
86h
87h
88h
89h
8Ah
8Bh
8Ch
8Fh
Description
The Coprocessor initialization test. Use the
floating point instructions to determine if a
coprocessor exists instead of the ET bit in
CR0.
Disable onboard COM and LPT ports before
testing for presence of external I/O devices.
Run late device initialization routines.
Test and identify RS232 ports.
Configure Fisk Disk Controller.
Test and identify parallel ports.
Display any ESCD read errors and configure
all PnP ISA devices.
Initialize onboard I/O and BDA according to
CMOS and presence of external devices.
Initialize motherboard configurable devices.
Initialize interrupt controller.
Enable NMI.
Initialize Extended BIOS Data Area and ini-
tialize the mouse.
Setup interrupt vector and present bit in
Equipment byte.
Initialize both of the floppy disks and dis-
play an error message if failure was
detected. Check both drives to establish the
appropriate diskette types in the BIOS data
area.
Count the number of ATA drives in the sys-
tem and update the number in bdaFdis-
kcount.
193
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