Digital Equipment Pro-Face PL-6700 43 Series, Руководство пользователя

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Appendix
PL-6700 43 Series User’s Manual App-15
Operation Input Output
Writing sector
AH =
AL =
CH =
CL =
CH =
CL =
=
DH =
DL =
ES:BX =
03h
Number of sectors
Track No.
Sector No.
Cylinder No. Insignificant 8 bits
Sector No. (Bits 0 - 6)
Cylinder No. Significant 2 bits (Bits 7 -8)
Head No.
Drive No. ( FDD: 00h - 01h,
Drive No. ( HDD: 80h - 81h)
Buffer address
CY =
=
AH =
0: Successfully completed
1: Error
Status
Sector content check
AH =
AL =
CH =
CL =
CH =
CL =
=
DH =
DL =
04h
Number of sectors
Track No.
Sector No.
Cylinder No. Insignificant 8 bits
Sector No. (Bits 0 - 6)
Cylinder No. Significant 2 bits (Bits 7 - 8)
Head No.
Drive No. ( FDD: 00h - 01h,
Drive No. ( HDD: 80h - 81h)
CY =
=
AH =
0: Successfully completed
1: Error
Status
Track/Cylinder format
AH =
AL =
CL =
DH =
DL =
ES:BX =
05h
Track/Cylinder No.
Insignificant 8 bits
Track/Cylinder No.
Significant 2 bits (Bits 7 - 8 )
Head No.
Drive No.
Top address in format data table
CY =
=
AH =
0: Successfully completed
1: Error
Status
Reading drive
parameters
AH =
DL =
08h
Drive No. ( FDD: 00h - 01h,
Drive No. ( HDD: 80h - 81h)
CY =
=
AH =
0: Successfully completed
1: Error
Status
When FDD drive No. specified in DL
ES:DI =
CH =
CL =
DH =
DL =
BL =
Drive parameter starting address
Insignificant 8 bits in 10 bit value for max.
number of tracks
Bits 7 & 6: Insignificant 2 bits in 10 bit value
for max. number of tracks
Bits 5 - 0: Max. number of sectors per track
Max. number of heads
Number of built-in floppy disk drives
Bits 3 - 0: CMOS valid drive type value
Bits 7 - 4: Fixed to 0
When HDD drive No. specified in DL
CH =
CL =
DH =
DL =
Max. number of cylinders
Max. number of usable sectors and
Significant bit in max. number of cylinders
Max. number of usable heads
Number of built-in hard disk drives
4 BIOS Lists