Re: macADT and .dsk images over 140k

["Michael J. Mahon" <mjmahon@aol.com>]

touchstone wrote:
> hi,
>
> i have an apple iie connected to a g3 all-in-one (remember those) 
> running os 9.1.
> it works flawlessly with images of exactly 143360 bytes, as you would 
> expect.  i've been
> downloading the images from asimov.net and some of them that i would 
> like to try
> expand to 144k or 143363 or thereabouts.  of course, adt on the iie 
> won't  accept any extra
> bytes over the capacity of a floppy.
>
>
> any ideas?  i've set the type and creator correctly and it's not a 
> custom icon.
> i tried to copy/edit these images on a iie emulator using blank 140k 
> images, to no avail, using
> an app called 'iie' found on the asmiov archive.

My guess is that a "prefix" has been added to the files.

If you have a hex editor, you could write the file back to disk
without these extra bytes.  Comparison with a known-good image
with the same operating system (e.g., DOS or ProDOS) should reveal
where the image actually starts.

As you've found, some of the files on Asimov are not quite as
advertised...

-michael

NadaPong: Network game demo for Apple II computers!
Home page:  http://members.aol.com/MJMahon/

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