From: peter.ferrie@gmail.com   
      
   > For the Apple II part, the first byte needs to be $01   
      
   It can be zero.  The PROM loops while the value in $3D is < $800.   
   Then to make 6502/8086 compatible, the sequence can be   
   00 CD EB xx   
      
   which on 8086 is   
   00 CD ADD CH,CL   
   EB xx JMP SHORT [to x86-specific code]   
   and on 6502   
   00 ;1 sector read   
   CD EB xx CMP $xxEB   
   [6502 continues]   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)