Tandy 1000 Basic Reference Manual

Chapter 10 I BASIC Keywords
DE FDBL/INT/SNG/STR Statement
DEFDBL letter[,letter, ...I
DEFINT letter[,letter,. . .I
DEFSNG letter[,letter, ...I
DEFSTR letter[,letter, ... 1
Defines any variables beginning with letteris) as: double preci-
sion (DBL), integer (INT), single precision (SNG),
or string
(STR).
You may specify
letter as a range of letters. For example, A-J.
Remember, a type declaration tag always takes precedence over
a
DEF statement.
Examples
DEFDBL L-P
classifies all variables beginning with the letters L through P as
double precision variables.
DEFSTR A
classifies all variables beginning with the letter A as string
variables.
DEFINT I-N, W,Z
classifies all variables beginning with the letters I through N,
W, and Z as integer variables.
DEFSNG I, Q-T
classifies all variables beginning with the letters I or Q through
T as single precision variables.
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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