Commodore Plus 4 - Page 250

238 Machine Language on the Commodore Plus/4
Save (S) command and represent the first location that was saved to the file.
Hence, a program is always compared with the same section of memory from
which it was saved. If the file name is omitted, the device must be the cassette. If
the device is omitted, it is assumed to be the cassette.
If any differences between the contents of the file and the memory from which
it was saved are found, a verifying error is reported. If the memory has not been
changed since the save, the file should be saved again, possibly on a different tape
or disk.
Example: V"TEST",8
SEARCHING FOR TEST
VERIFYING ERROR
The monitor is asked to compare the program "TEST" from the disk drive (device
8) with the section of memory from which it was saved. A difference is found and
reported as an error.
Example: V
PRESS PLAY ON TAPE
OK
SEARCHING
FOUND
VERIFYING
The monitor is asked to compare the first program on the cassette with the
memory from which it was saved. No differences are found.
Exiting to BASIC from the Monitor—The X Command
The X (Exit) command is used to return to BASIC from the monitor.
The syntax is as follows:
Control is returned to the BASIC language interpreter. If the stack pointer has
been altered while in the monitor, the BASIC CLR command should be executed
when you return to BASIC.
Example: X
READY.
CLR
READY.