From: me@yyzkevin.com   
      
   I see from the planar schematic that Pin23 (CS1FX) on J11 is controlled by     
   Pin62 on U9 / 72X8203,  which seems is the  factory programed gate array so   
   that is a dead end for me.   
      
   I guess this is a case of   inspecting the bios if it is not already common   
   knowledge.      It would seem the misuse of this connector  and the unlisted   
   A3 line I was dreaming about may not be possible.   
      
   On Thursday, 13 July 2023 at 20:29:57 UTC-4, Kevin Moonlight wrote:   
   > I am working with my Model 30, 8530-021. I wanted to do some direct   
   interrogation to the hard disk registers, but when I attempt io read/writes to   
   320h - 32fh (using debug, or basic , etc) they do not actually get to the   
   drive no activity on cs1fx,iow,   
   ior etc, but when I run fdisk etc there is activity.    
   >    
   > Is there a secret way to access directly/unask/ and not through dos int?   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)