Tandy 1000 Basic Reference Manual

Chapter 10 I BASIC Keywords
VARPTR$
Function
VARPTR$( uaria ble)
Returns a character form of the memory address of the variable.
VARPTR$ is primarily used with PLAY and
DRAW in programs
that are later executed.
Variable is a numeric or string variable.
VARPTR$ returns a 3-byte string:
byte
0 = type
byte 1 = low byte of address
byte 2 = high byte of address
Type
is 2 for integer variables, 3 for string variables, 4 for single
precision variables, and
8 for double precision variables.
Note: Because array and string addresses and file
data blocks change whenever you assign a new vari-
able, do not store the contents
of VARPTR$ into a
variable.
Example
10 PLCIY "X" +VARPTR$<A$)
uses the PLAY subcommand X, plus the contents of A$, as the
argument
for PLAY.
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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