From: usotsuki@buric.co   
      
   On Wed, 26 Nov 2025, Peter Ferrie wrote:   
      
   > https://github.com/a2-4am/probable   
   > runs DOS disk images from ProDOS.  Maybe start there?   
      
   That sounds like what I call the "MECC Method" - use a disk image to run   
   DOS 3.3 software but replace RWTS with ProDOS calls.  For something like   
   Ae, (using the "AppleWorks" method of doing boot/program with ProDOS-8)   
   this could be the best way to implement the second side of the disk (but   
   some additional code would be needed to implement the front/loader side).   
      
   (Part of the answer to Ae is sparse files; back in 2019 I attempted to   
   filecrack it myself and was able to create a disk image with the back side   
   of the game disk and 3.5K to spare, but I wasn't able to actually create   
   the loader.)   
      
   What I was trying to do was something a bit more complex: hack into DOS   
   3.3 at the level of - I think it's referred to as the File Manager.   
   Implementing the CHR$(4) hooks would be a lot easier but it would only   
   work for a few programs - this would theoretically work for something like   
   Railroad Works, which does seem to rely on the filesystem, but doesn't use   
   the CHR$(4) hooks.   
      
   -uso.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)