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- February 20,1992
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- Format Converter 1.0
- By Lonnie Dwayne Webb
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- Format Converter is written in GFA-BASIC 3.5 to convert the
- boot record of old TOS diskettes to IBM standards. It also
- permits the user to write the Neodesk boot record. Since I
- don't have NeoDesk (yet!) I can only make small observations
- about disks that already have that format. Needless to say,
- this option is not considered finished--USE AT YOUR OWN RISK!
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- Atari TOS Format
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- In case you haven't found out already, old TOS machines
- like mine will not format IBM disks without some help. The
- first sector(boot sector, or boot record as Norton puts it) is
- written differently. I assume the difference is this: IBM puts
- a lot of information on the boot record concerning the DOS
- version number, system files, default error messages, and the
- boot program.
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- For the most part Atari disks don't need any of that
- information. I suppose that's the reason for the difference.
- The first two words of the boot sector(this is all ala Webb)are
- identifiers. I really don't know exactly what they identify, so
- I'll just stop speculating now.
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- I haven't written a routine to write Atari boot records for
- two reasons. One, there's no reason to. Atari reads all IBM
- formats I know of. Two, I just don't have enough information at
- my disposal to write a complete routine for every Atari format,
- and I know there have been changes.
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- By the way, the converter will not alter hard drives. I
- can't afford an Atari drive to make the comparison, besides I
- can't think of a real need for it right now.
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- IBM Conversion
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- When run, CONVERT.PRG reads DISK A by default. Change the
- drive with the File menu. A tick will appear next to the disk
- chosen.
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- Choose either MS-DOS or NeoDesk to do the conversion. You
- get to choose from the three most common identifiers:
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- 28: This is the byte that Norton's Safe Format writes.
- I have also found it on DOS disks with DOS 3.3 and
- earlier.
- 34: This byte is on all my DOS 4 5.25 disks.
- 3C: I get this byte by formatting under DOS 5.0.
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- When you have made you selections, the first two words are
- displayed. You can see off hand if they need converting.
- Sector 0 is read in, and should you click the button, the
- first two words are changed accordingly.
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- I credit the functionality of this program to a post on
- Netnews. Someone posted the information I used, and I thank
- them. I believe it was in the welcome message II.
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- Autoboot Programs
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- I have tested the converter on my autoboot programs and
- haven't had any trouble. I don't think it should, either.
- HOWEVER, it's always a good idea to make a backup first. And
- test on the BACKUP.
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- Fixing Disks
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- As you may have heard, the best programs for dealing with
- bad disks are on other computers. With this conversion, your
- data is a big step closer to being secure and portable.
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- Plus you don't have to format on another machine anymore!
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- Shareware
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- This program is shareware and may be freely distributed in
- its original form. If you use, or plan to use, this program,
- please send $15(or whatever you think it's worth)to:
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- Lonnie Dwayne Webb
- 16007 Dutch Mills N.
- Lincoln, AR 72744
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- I will continue to support this and all software I write.
- Those who register their copy of CONVERT will receive upgrades
- and the next program I write free. Hopefully that will be a
- good sector editor with a decent routine for fixing disks.
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- Every effort has been made to insure that this program is
- bug free. In testing, no problems have arisen, HOWEVER...
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- DISCLAIMER
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- No warranties either implied, expressed, or written have
- been made concerning this program. The author assumes no
- responsibility concerning quality or long reaching effects of
- the program.
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- Please send any problems, bugs, or comments to the above
- address or by Internet to: lwebb@uafhp.uark.edu.
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- Good Luck.
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