Tandy 1000 Basic Reference Manual

Chapter 1 I About BASIC for MS-DOS
BASIC finds those files and might also find these:
data.txt
datatst.txt
datal.txt
Device Names
BASIC uses device identifiers (dev:) to indicate a physical device to
be used for communication. These names, which must be enclosed
in quotation marks, are:
KYBD:
SCRN:
LPT1:
COMn:
You can open any
of these devices just as you would a disk file.
keyboard. Use for input only.
screen. Use for output only.
printer. Use
for output only.
RS232 communications channel 1 or 2. Use for input or
output.
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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