From: fjkraan@xs4all.nl   
      
   On 2013-08-20 01:41, spacewar@gmail.com wrote:   
   > On Sunday, August 18, 2013 3:51:34 AM UTC-6, Fred Jan Kraan wrote:   
   >> There is a "MODEL II OWNER's MANUAL SUPPLEMENT" for the Model 16 or   
   >>   
   >> enhanced model II from 1982 which lists some additional SVCs, but not   
   >>   
   >> 31. Maybe the 4.x versions are newer than that.   
   >   
   > I've looked it over, and it supplements the TRSDOS 2.0 manual for the things   
   that are new in TRSDOS-HD (TRSDOS-II 4.0).  It's the same stuff documented in   
   the TRSDOS-II Reference Manual.   
   >   
   > I guess SVC 31 is just an undocumented one.   
      
   At   
   file:///home/fjkraan/kryten/site/comp/trs80m2_sources/TRSDOS_II_svc.txt   
   is a rough list of the documented SVCs I could find in the TRSDOS 1,2,   
   II and 16 documentation. 31 must be an old one, presumably performing   
   some essential function that users don't need to know about.   
   >   
   > Thanks!   
   > Eric   
   >   
   Greetings,   
      
   Fred Jan   
      
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