SECTION 6
Conversions and Interfaces
6-56 PEN*KEY
R
6200/6300 Hand-Held Computer Programmer’s Reference Guide
INT 13h, Function AH = 03h: Write Disk Sectors from Memory
BIOS
The requested sectors are transferred from the buffer to the disk. See the Error
Codes table (page 6Ć54) for definitions.
On Entry:
AH = 03h
DL = Drive number
DH = Track number
CH = Cylinder number
CL = Sector number
AL = Number of sectors
ES:BX = Buffer address
On Return:
If successful:
Carry = 0
AH = 0
AL = Number of sectors actually transferred
If NOT successful:
Carry = 1
AH = Drive status
INT 13h, Function AH = 04h: Verify Disk Sectors
BIOS
Sector block checks for the requested sectors are verified. See the Error Codes
table (page 6Ć54) for definitions.
On Entry:
AH = 04h
AL = Number of sectors
DH = Track number
DL = Drive number
CH = Cylinder number
CL = Sector number
ES:BX = Buffer address
On Return:
If successful:
Carry = 0
AH = 0
AL = Number of sectors actually transferred
If NOT successful:
Carry = 1
AH = Drive status
6. Conversions and
Interfaces
