Tandy 1000 Basic Reference Manual

Chapter 10 i BASIC Keywords
You may specify any segment as the target or source for BLOAD
or BSAVE. This is
a useful way to save and redisplay screen im-
ages by saving from or loading to the screen buffer.
Sample Programs
Program 1
10 'SAVE A 50 byte image of memory
20 DEF SEG = bHl0
30 FOR I = 256 to 306
40 VLUE = PEEK (1)
50 LPRINT "AT ADDRESS ";I; "WE HAVE A VALUE
60 NEXT I
70 BSAVE "prog1",0,50
80 PRINT "Now Run Program 2 to verify that the
OF ";VLUE
content5 saved in the file PROGl match those
in the printout produced by this program."
Program 2
10 'Load a 50 byte file into memory and verify
it
20 DEF SEG = &H10
30 BLOAD "progl .bas", 0
40 FOR I = 256 to 306
50 VALUE = PEEKCI)
60 LPRINT "AT ADDRESS ";I; "the loaded value
i 5 " ; VALUE
70 NEXT I
Program 1 saves a memory image file, and Program 2 reloads
that file and prints it.
103

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