Re: I have uploaded disk images of Magnetic Scrolls' "Corruption" to Asimov

[Hot Rod <hotrod.apple2@gmail.com>]

On Tuesday, September 4, 2012 1:50:06 PM UTC-5, Hot Rod wrote:
> On Monday, September 3, 2012 3:03:22 AM UTC-5, skylarking wrote:
> 
> > I got them a while ago and they aren't working, but someone may be able to hack them.
> 
> 
> 
> Did you have foppies that worked, or only just these .dsk images?  Side A certainly has data on it, and does get to boot0, but on quick glance, it appears to be hanging in the $C65E datastrobe routine in ROM looking for address markers (at least in AppleWin).  That seems peculiar, given they're .dsk images (and not .nib).

Hmm, it looks like the boot loader is like an old EOA loader (IIRC), and the sectors in the .dsk image aren't in the order it's expecting.  It wants to load physical sector 7 into $900, but is getting a different sector instead ($B). Then it should load track $4, sector $1 into $A00, and that code seems to be on track $4, sector $E instead.

So it looks like the sector ordering is mixed up.  Need to ponder what the correct mapping is...