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likely detect a checksum error when
verifying or extracting the archive.
ARC handles relative files. These
babies are difficult enough just to
copy let alone transfer them over the
phone!
ARC also supports a number of useful
commands for viewing directories,
moving files between drives, viewing
the contents of files, renaming files,
and editing simple text files. For more
details, you'll have to read the
documentation for ARC which is quite
complete.
First of all there are several ARCs.
ARCXYZ.4 is for a standard C-64.
ARCXYZ.8 is for a C-64 equipped with
a BI-80 eighty column video
adaptor.
XYZ is the version number. The higher
the number, the more up to date the
program. Archives are downward
compatible. This means that any ARC
program will be able to handle any
archive created by any other ARC
program provided that its version
number is equal to or higher than the
one that created the archive.
Note also that archives created on
MS/PC-DOS machines are of a different
format than Commodore archives. At
present ARC can only view the directory
of an MS-DOS archive but thats all. We
should be able to expand on this in the
future.
When you first run ARC, all you get
is a brief message and you're back at
the READY prompt.
ARC is written as a wedge. It adds a
number of commands to the basic
interpreter, one of which is ARC. We'll
just briefly summarize some of the
commands you will need to know to get
started using ARC. For more details
read the complete documentation
provided elsewhere on this system.
1) DOS WEDGE.
This should be familiar. Syntax is
the same as used in "DOS 5.1", SYSRES,
or whatever other wedge you use.
>$0 - view directory
>i0 - initialize drive 0
And so on and so forth...
2) DISK DRIVES
ARC refers to disk drives by letter,
not number. It takes a bit of getting
used to but its more accurate and
convenient once you're used to it. Thus
A: is unit 8 drive 0, B: is unit 8
drive 1, C: is unit 9 drive 0 and so on
up to H: which is unit 11 drive 1.
Thus:
LOAD"C:ARC220.4"
Could be used in place of:
LOAD"0:ARC220.4",9
If you do not specify a drive
letter in a filename, then ARC will
assume you meant the default drive.
(normally A:) You set the default drive
simply by typing its letter followed by
a colon.
C: <return>
Sets the default drive to unit 9
drive 0. All wedge commands (>$ etc.)
and filenames will default to this
drive. If you just typed the above,
then: