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- Path: news1.channel1.com!usenet
- From: amazon@us1.channel1.com (Paul)
- Newsgroups: comp.sys.cbm
- Subject: Re: Question about 1581
- Date: Sat, 03 Feb 1996 01:03:09 GMT
- Organization: Channel 1 Communications
- Message-ID: <4eu99c$j4g@news1.channel1.com>
- References: <4er5rf$m6o@sdcc12.ucsd.edu> <4etdim$g66@charnel.ecst.csuchico.edu>
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-
- Phil Hoff <phoff@ecst.csuchico.edu> wrote:
-
- >galvarez@cs.ucsd.edu (Guillermo Alvarez) wrote:
- >>
- >>
- >> It seems nice to be able to use 3.5" disks that store 800K, but what
- >> about compatibility? The 1571 has a "1541 mode" -- does the 1581 have
- >> this as well?
- >>
- >No.
-
- >> For example, can you store several games of one (1541) disk each in a
- >> single 1581 disk? Or are there problems with loaders, etc?
- >>
- >You could store several games on a 1581 disk, but if you mean (as I
- >suspect), commercial games, the answer is probably no. These 1541
- >disks are invariably copy-protected in a way that uses some peculiarity
- >of the 1541 DOS or some feature of the disk structure (such as having
- >written a certain error to a certain track). IF the disk is copied to
- >a 1581, it is highly unlikely that the same information would be on
- >the same track.
-
- >If you have non-copy protected disks, you could store several disks
- >worth on one 1581 disk. However, if some of the programs you were
- >saving had similarly-named files, you might have to create partitions
- >on the 1581 disk and store each 1541 disk's worth in its own partition.
-
-
- I have a share ware program that convert's a 1541 to a 1581 and copys
- it track for track and changes the 1581 disk to appear like a 1541.
-
- While I am thinking of this, it would be nice to have a program from
- the 1581 that would create 4 1541 type partitions, similiary to what
- can be done on a FD drive.
-
- - Paul
-
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