Tandy 1000 Programmer's Reference Guide

Chapter 1 I System Calls
DeleteFile
Delete File Function Call 13H
Deletes all directory entries that match the filename given in
the specified unopened FCB. The filename can contain the
?
wildcard character to match any character.
Entry Conditions:
AH = 13H
DS:DX = pointer to an unopened FCB
Exit Conditions:
If A1 = 00H, a directory entry was found.
If AL
= FFH, no directory entry was found.
Macro Definition:
delete macro fcb
mov dx,offsetfcb
mQV ah,l3H
int 21 H
endm
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Tandy 1000 Specifications

General

Processor	Intel 8088
Processor Speed	4.77 MHz
RAM	128 KB (expandable to 640 KB)
Operating System	MS-DOS 2.11
Manufacturer	Tandy Corporation
Release Year	1984
Storage	Single or double 5.25" floppy disk drive (360 KB), optional hard drive
Sound	Tandy 3-voice sound
Ports	Parallel, Serial
Graphics	CGA (Color Graphics Adapter)
Graphics Modes	320x200, 640x200