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   From: muratlanne@gmail.com   
      
   "Person Familiar With the Matter"  wrote in message   
   news:10jetkf$2dk96$1@dont-email.me...   
      
   The Motorolla 6809B CPU was used on the early Space Shuttles with   
   Microware's OS-9 operating system -- the same combo used by Tandy on the   
   Color Computer II. I programmed Servo Track Writers using MASM   
   (Microsoft Assembler) and 6809 processors when I worked for Miniscribe /   
   Maxtor, where they built hard drives for IBM AT personal computers. I   
   still have a Color Computer II, but lost the RF interface needed to   
   connect it to an NTSC television, which I no longer have.  It's sort of   
   like having a 78 rpm phonograph with no records to play on it, LOL.   
      
   ---------------------------------   
   I didn't know there was a rad-hard version of the 6809. My HDTVs accept NTSC   
   as well as ATSC.   
      
   I was tasked to design a controller for an early bare 10MB Fujitsu hard   
   drive, to see if I could as I was a tech studying engineering, but I was   
   still digesting the complexities of the FDD track format in the WD1771 app   
   note and hadn't progressed beyond stepping and reading the head when the WD   
   surface mount controller card appeared. For my homebrew I built an FSK modem   
   for a cassette recorder. I programmed it first with minicomputer-style   
   toggle switches, then an octal keypad until my editor/assembler was adequate   
   to type in a program and document the existing hand-coded ones. It had fully   
   served its purpose when I was promoted to designing and programming.   
      
   Do you know any tricks to avoid the slowdown of Shingled Magnetic Recording?   
   WD support "confirmed" that wiping free space doesn't help and the one USB   
   drive I checked doesn't appear to support Trim.   
      
   --- SoupGate-DOS v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)