Tandy 1000 User Manual

Basic
DEFSNG letter [,letter, ...I
Defines any variables beginning with letter($ as single precision
variables.
DEFSNG T DEFSNG Q-2
DEFSTR letter [,letter,..]
Defines any variables beginning with Letter($ as string variables.
DEFSTR A DEFSTR G-M
DEF FNname [(argument List)] = expression
Defines name as a function according to expression.
Name
is a valid variable name.
Argument list is a list of dummy variables used in expression. They
are replaced on a one-to-one basis with the variables or values given
when the function is called.
Expression defines the operation to be performed.
DEF FNR = RND(1)*69+10
DEF FNW#
(A#,B#>=(A#-B#>"2
DEF SEG[ = address]
Assigns the current segment address. The segment address is used
by BLOAD, BSAVE, CALL, PEEK, POKE, and USR.
Address is an integer in the range 0 to 65535. Address must be on
a 16-byte boundary. Default
= BASIC's data segment (DS).
DEF SEG DEF SEG=&HB800
Tandy 1000
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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