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2mg Image Is A Bad Idea?
- Subject: 2mg Image Is A Bad Idea?
- From: "Bryan Parkoff" <BParkoff@satx.rr.com>
- Date: Sun, 18 Aug 2002 15:28:14 GMT
- Newsgroups: comp.sys.apple2
- Organization: Giganews.Com - Premium News Outsourcing
- Reply-to: "Bryan Parkoff" <BParkoff@satx.rr.com>
- Xref: archiver1.google.com comp.sys.apple2:22180
2mg Image Is A Bad Idea?
I understand that 2mg Image is truly RAW sector. I assume that it is
very bad idea because RAW Image can't determine the number of sectors in the
different orders. I understand that ProDOS is in sequence order and DOS 3.3
is in sequence of skipping 4 sectors before jumping back to next 4 sectors.
I know that it is the way how ProDOS and DOS 3.3 behave differently like
Pascal. I am aware that RAW Image DOES have flag, but it is not ALWAYS
work.
The better way is to write a different routine that allow to read track
0 and sector 0. Track 0 and sector 0 might have some data that will let the
routine know which to read sequence order of sectors or sequence order of
next 4 sectors.
For example, some Apple II games use DOS 3.3, but it is not truly DOS
3.3 such as Sierra games. I did remove copy-protected and used DSK2File to
convert from Sierra game floppy diskette into Sierra.Dsk before I
transferred Sierra.Dsk to PC. Neither XGS nor KEGS fail to read Sierra.Dsk
because it can't be so sure if sectors are in orders.
I did try basic ProDOS Master and DOS 3.3 Master and they worked
perfectly. What about games? Please advise.
--
Yours Truly,
Bryan Parkoff
BParkoff@satx.rr.com