Tandy 1000 Programmer's Reference Guide

Chapter 1 I System Calls
Example:
The following program creates a file named DIR.TMP on the
disk in Drive
B that contains the disk number (0 = A, 1 = B,
etc.) and filename from each directory entry on the disk.
record-5ize
fcbl
fcb2
buffer
func-16H:
wri te-i t :
all-done:
db
db
db
db
db
set-dta
search-first
CmP
le
create
mow
write-seq
search-next
CmP
le
Imp
close
14
2,"DIR
TMP"
25 dup(7)
25 dup
(7)
128dup(7)
2
, " 7 7 7 7 7 7 7 7 7 7 7"
;offset of Recordsize
;fieldof
FCB
buffer ;seeFunctionlAH
fcb2 ;seeFunctionllH
a1,BFFH ;directoryentry found?
a1 I-done ;no,nofiles ondisk
fcbl
;THIS FUNCTION
fcbl[record-sizel,l2
fcbl ;seeFunctionlSH
fcb2 ;see Function l2H
a1,EFFH ;directoryentry found7
a1 I-done ;no,go home
wr i te-i t
fcbl :seeFunction 10H
;set record size to 12
;yes,writethe record
63

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