From: larry_fosdick@hotmail.com   
      
   "Knut Roll-Lund"  wrote in message   
   news:QN6dnaXXCsrl_y7YRVnzvQ@telenor.com...   
      
   snip...   
      
   > how? Per side, it was normal to use 10 sectors of 256 bytes in single   
   > density. In double density one would either have 18 sectors of 256 bytes   
   > or 9 sectors of 512 bytes.   
   >   
   > Rich said 1 head. Single sided it is. 180K then makes sense only with   
   > double density 40 track. It would be so on TRS-80 model I/III/4 and IBM PC   
   > (with clones).   
   snip   
      
   80-track single density = 180K is as close as I come using my TRS-80 Model I   
   with 3.5" SD drives (720K when DDDS).   
      
   > --   
   > Knut   
   > (delete 'nogarbage.' for email)   
      
   Larry   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)