Having lots of free time, I began pondering autodetection of bank
switching types (I'm bothered by the increasingly unweildy stella.pro
file size).
Here are some ideas. Maybe they'll resonate with someone.
The Cartridge::autodetectType() routine in stella (1.2) is a good
start.
3F has been extended by many homebrew authors to do more than 16K carts.
These are not hard to spot. Look for multiple occurances of the byte
string $85 $3F in images of 16K, 32K, etc... I have a large corpus of
files and I did not find many false positives with this heurustic.
For 8K images, F8 can be spotted with multiple occurances of
{$8D | $AD | $2C} {$F8 | $F9} {$FF | $1F}
(thus $8D $F8 $1F would be a match, as would $2C $F9 $1F)
Not many false positives here. This covers the bulk of the F8 images in
my corpus.
Similarly, for 16K images, F6 can be spotted with
{$8D | $AD | $2C} {$F6 | $F7 | $F8 | $F9} {$FF | $1F}
I've yet to come up with E7 or E0 heurustics, but they shouldn't be
hard, and would be similar to these.
--
Will code for food. http://cuddlepuddle.org/~adam/resume.html
adam@xxxxxxxxxxxxxxxx http://cuddlepuddle.org/~adam/pgp.html
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