Radio Shack TRS-80 Model II Reference Manual page 126

MODEL II TRSDOS
Error Conditions
If a
TRSDOS
error occurs during the patch operation, you will receive the
appropriate
** ERRORnn **
message, and the patch will be terminated without
changing the file.
PATCH
can also produce the following messages:
hen you are patching a dat
Ing spans two records. You wi
patch in two steps, one for each
re
s a part of the string to be changed.· .
ADDRESS OUT OF
PROGRAM-LOAD
RANGE-ABORT
162
This occurs when you attempt to pat9h a program file,
and some or all of the patch string is outside the
RAM
area where the program resides when it is loaded.
Check the A=aaaa parameter. Also be sure that the
findstring and changestring aren't longer than you
intended for them to be.