Tandy 1000 Programmer's Reference Guide

Chapter 1 I System Calls
Rename
Rename File Function Call 17H
Changes the name of a file. The current drive code and filename
occupy the usual position in the file’s FCB, and are followed by a
second filename at offset 11H. (The
2 filenames cannot be the
same name.) The disk directory is searched
for an entry that
matches the first filename, which can contain the
? wildcard
character
.
If a matching directory entry is found, the filename in the direc-
tory entry is changed to match the second filename in the modi-
fied FCB. If the
? wildcard character is used in the second
filename, the corresponding characters in the filename
of the di-
rectory entry are not changed.
Entry Conditions:
AH = 17H
DS:DX = pointer to the FCB containing the current and new
Exit Conditions:
If AL = BBH, a directory entry was found.
If AL
= FFH, no directory entry was found or no match exists.
Macro Definition:
filenames
rename macro fcb,newname
mow dx,offsetfcb
mov ah,l7H
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