'Non-working images'
Author:Lord Crass (guest: search)
Date: Sat, May 21st, 2011 @ 20:19 ( . )

Kwik-Write! [Datamost]: Track 15 is non-standard. Only the last sector has a sector header and any data in the data block. This data block is divided into 3 shorter sections by sync marks:

The first section has $45 bytes of data and is written at a non-standard density (%10 instead of %11).

The second section is written at density %01 and $7D bytes are read in.

The third section is written at density %00 and $82 more bytes are read in. The GCR data is then decoded using standard ROM GCR decoding routines.

This track needs to be redumped three more times, at density levels 0, 1, and 2. The data could then be merged into the image for a working G64.

In short, there's all 4 density levels present on this one track (the sector header is written at standard density %11)


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--* Non-working images
5/22/2011 @ 18:52--hyper active
5/28/2011 @ 13:51--Pete Rittwage

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