Re: Backing up Pascal Disks...

[pausch@saaf.se (Paul Schlyter)]

In article <406dd01c$1_5@corp.newsgroups.com>,
Exegete  <millers@noneofyourbusiness.com> wrote:
 
> Use the ProDOS utilites to copy a disk.
> It recognizes the Pascal format.
> And yes, it is a 16 sector disk.
> In fact, unless I really am senile, 16 sectors started with Pascal.
> 
> Roy
 
Yes it did.  I got my own 16-sector disk controller card ROM's from
buying Apple Pascal early.  This also enabled me to use the 16-sector
version of Apple CP/M, which I also bought early and which in the
beginning came with both a 13-sector and a 16-sector disk (the
13-sector disk lacked, due to space limitations, GBASIC i.e. the
"graphical" version of MBASIC).
 
After having run 16-sector Apple Pascal and 16-sector Apple CP/M,
I finally also switched from 13-sector Apple DOS 3.2 to 16-sector
Apple DOS 3.3 ....
 
The switch from 13-sector to 16-sector floppies on the Apple II also
meant a switch from hard sector ordering to soft sector ordering:
while on 13-srctor disks the sectors were interleaved "the hard way",
i.e. the sector numbers written to the disk were interleaved, on the
16-sector Apple II disks the sector numbers were non-interleaved,
i.e. 0,1,2,3,4,...,D,E,F and sector interleaving was implemented in
software instead, through a (short) look-up table. BTW the Apple
Pascal sector ordering is identical to the ProDOS sector ordering.
 
-- 
----------------------------------------------------------------
Paul Schlyter,  Grev Turegatan 40,  SE-114 38 Stockholm,  SWEDEN
e-mail:  pausch at stockholm dot bostream dot se
WWW:     http://www.stjarnhimlen.se/
         http://home.tiscali.se/pausch/