Tandy 1000 Basic Reference Manual

Chapter 10 I BASIC Keywords
If you set video memory larger than the required page size,
BASIC divides the assigned memory into pages based on the
page size requirement. For example, if you set aside 32K for
video memory for Screen Mode
1, BASIC divides the video mem-
ory into 2 pages (32/16=2). See Chapter
8, SCREEN, and
PCOPY for more
on video pages.
Note: BASIC allocates string space dynamically.
BASIC displays an “Out
of string” space error if no
free memory is left for BASIC.
Ex ample s
clears all variables and closes all files.
CLEAR
CLEAR, 45000
clears all variables and closes all files; then makes 45000 the
highest address BASIC may use to run your programs.
CLEAR, 61000, 300
clears all variables and closes all files; then makes 61000 the
highest address BASIC may use to run your programs, and allo-
cates 300 bytes for stack space.
CLEAR ,,,32768
sets aside 32K for video memory.
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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