Tandy 1000 Programmer's Reference Manual page 212

Chapter 6
I
BIOS Services
Disk I/O Support for the Floppy Only
System Configuration
Software Interrupt:
13 hex (19 dec)
Function Summary:
AH
=
0: Reset Floppy Disk
AH
=
1: Return
Status of
Last Floppy Disk Operation
AH
=
2: Read Sectorb) from Floppy Disk
AH
=
3: Write Sector(s). to Floppy Disk
AH
=
4: Verify Sector(s) on Floppy Disk
AH
=
5: Format Track on Floppy Disk
Function Descriptions:
Reset Floppy Disk
Reset the diskette system. Resets associated hardware and re-
calibrates all diskette drives.
Entry Conditions:
AH
=
0
Exit Conditions:
See "Exits From All Calls" below.
Return Status of Last Floppy Disk Operation
Return the diskette status of the last operation in AL.
En try Conditions
:
AH
=
1
Exit Conditions:
AL
=
status of the last operation; see "Exits Fkom All Calls" be-
Read Sectorb) from Floppy Disk
Read the desired sectorb) from disk into RAM.
low for values
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