Tandy 1000 Programmer's Reference Guide

Chapter 1 I System Calls
subttl ADDRESSABILITY
Page
+
code segment
start:
subttl PROCEDURES
Page
+
; PROCEDURES
;READ-DISK
read-dis
k
get-sector:
done:
read-disk
;CLEARLINE
clear-line
move-blank:
clear-line
;PUT-BLANK
put-blank
assume
mov
mov
mov
mov
mov
Imp
proc;
CmP
Jle
mov
mov
mov
mov
CmP
]'e
mov
push
int
POPf
POP
sub
add
mov
xor
ret
endp
proc;
push
mov
xor
mov
i nc
POP
ret
endp
loop
proc;
mov
inc
ret
cs:code,ds:data,ss:stack
ax ,data
ds ,ax
ax,
5 tack
55,ax
sp,of
f set stack-top
main-procedure
5ectors_to_dump,zero
done
bx,offset input-buffer
dx,start-sector
a1,disk-b
cx,sectors-per-read
cx,sectors-to-dump
get-sector
cx,sectors-to-dump
di sk-read
cx
cx
sectors-to-dump,cx
start-sector,cx
sectors-read,cx
51,51
cx
cxJ7
bx,bx
output-buffer[bxl,"
"
bx
mov-b Ian
k
cx
output buffer[dil,"
"
di
145

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