Tandy 1000 Basic Reference Manual

Chapter 10 I BASIC Keywords
ON ERROR GOTO
Statement
ON ERROR GOTO line
Transfers control to line if an error occurs.
This lets your program recover from an error and continue exe-
cution. (Normally, you have
a particular type of error in mind
when you use the ON ERROR GOTO statement.)
You must execute an ON ERROR GOTO before the error occurs.
To disable it, execute an ON ERROR GOTO
0, which causes
BASIC to stop execution and print an error message. This is rec-
ommended for errors that are trapped and from which you can-
not recover.
Note: If an error occurs during execution of an error-
handling routine, that error message
is printed and
execution terminates. Error trapping does not occur
within the error handling routine.
The error-handling routine must be terminated by a RESUME
statement.
Example
10 ON ERROR GOTO 1500
branches program control to Line 1500 if an error occurs any-
where after Line
10.
Sample Program
See ERROR.
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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