Commodore 1581 - Save With Replace Command

FORMAT FOR A MONITOR SAVE
S "drive #:file name",device #,starting address,ending ad
dress +1
where "drive #:" is the drive number, 0 on the 1581; "file name" is any
valid file name up to 14 characters long (leaving two for the drive
number and colon); "device #" is a two digit device number, normally
08 (the leading 0 is required); and the addresses to be saved are given
in Hexadecimal but without a leading dollar sign ($). Note the ending
address listed must be one location beyond the last location to be
saved.
EXAMPLE:
Here is the required syntax to SAVE a copy of "DOS 5.1"
S "0:DOS 5.r,08,CC00,D000
SAVE WITH REPLACE
If a file already exists, it can't be saved again with the same name
because the disk drive only allows one copy of any given file name per
diskette. It is possible to get around this problem using the RENAME
and SCRATCH commands described later. However, if all you wish to
do is replace a program or data file with a revised version, another
command is more convenient. Known as SAVE-WITH-REPLACE, or
@SAVE, this option tells the disk drive to replace any file it finds in the
diskette directory with the same name, substituting the new file for the
old version.
FORMAT FOR SAVE WITH REPLACE:
SAVE"@Drive #:file name", device #
where all the parameters are as usual except for adding a leading "at"
sign (@.) The "drive #:" is required here.
EXAMPLE:
SAVE"@0:REVISED PROGRAM",8
The actual procedure is that the new version is saved completely,
then the old version is erased. Because it works this way, there is little
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