please dont rip this site
Interrupt 41h   Hard Disk Parameters  (XT,AT,XT2,XT286,PS except ESDI disks) 

Pointer to first Hard Disk Parameter Block, normally located

in the controller card's ROM. This table may be copied to RAM

and changed, and this pointer revectored to the new table.

note 1) format of parameter table is:

dw cylinders

db heads

dw starting reduced write current cylinder (XT only, 0 for others)

db maximum ECC burst length

db control byte

bits 0-2 drive option (XT only, 0 for others)

bit 3 set if more than 8 heads

bit 4 always 0

bit 5 set if manufacturer's defect map on max cylinder+1

bit 6 disable ECC retries

bit 7 disable access retries

db standard timeout (XT only, 0 for others)

db formatting timeout (XT only, 0 for others)

db timeout for checking drive (XT only, 0 for others)

dw landing zone (AT, PS/2)

db sectors/track (AT, PS/2)

db 0

2) normally vectored to ROM table when system is initialized.


file: /Techref/int/41.htm, 1KB, , updated: 1999/2/20 10:27, local time: 2024/12/25 11:15,
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