Tandy 1000 Programmer's Reference Guide

Chapter 1 I System Calls
Example:
The following program copies the contents of a single sided
disk in Drive
A to the disk in Drive B, verifying each
write.
It uses a buffer of 32K bytes.
on
off
1
0
prompt db "Source in A,target in B",13,10
start dw
0
buffer db 64 dup (512 dup(7)) ;64 ~iectors
db "Any key to
start. $"
f unc-2DH: display prompt
read-kbd
verify on
mov CX,~
copy: push CX
ab5-di5k-read 0,bu
abs-disk-write 1,bu
add star
POP cx
loop
COPY
verify off
disk-read 0,bu
abs-disk-write
add star
POP cx
loop COPY
verify off
fer,64,start
fer,64,start
,64
fer,64,start
;see Function 09H
see Function
08H
THIS FUNCTION
copy 64 sectors
5 times
save counter
5ee Interrupt 25H
see Interrupt 26H
do next
64 5ectors
restore counter
do
it again
THIS FUNCTION
5ee Interrupt 25H
,buffer,64,start
see Interrupt 26H
do next 64 sectors
restore counter
;do
it again
92

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