Tandy 1000 Basic Reference Manual

Chapter 10 I BASIC Keywords
See ON COM( ) GOSUB for more information about communica-
tions trapping.
Example
10 COM(1) ON
20 PRINT "NO ACTIVITY"
30 ON COM(1 1 GOSUB 100
40 GOT0 20
100 PRINT "YOU ARE RECEIVING DATA"
Line
200 RETURN
10 turns on a communications trar, on Channel 1. If char-
acters are received on the communications channel, program
control transfers to the subroutine beginning at Line 100. If
there
is no activity on the communications channel, Line 20
prints a message, and Line
40 keeps the program in a loop until
there is activity on the communications channel.
125

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