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Internet Message Format  |  1992-11-19  |  998 b 
  1. Path: sparky!uunet!zaphod.mps.ohio-state.edu!saimiri.primate.wisc.edu!ames!data.nas.nasa.gov!taligent!apple!kip2-34.apple.com!user
  2. From: keithley@apple.com (Craig Keithley)
  3. Newsgroups: sci.space
  4. Subject: Re: What kind of computers are in the shuttle?
  5. Message-ID: <keithley-191192112258@kip2-34.apple.com>
  6. Date: 19 Nov 92 19:24:15 GMT
  7. References: <BxKo4I.F9r.1@cs.cmu.edu> <1992Nov14.020910.15122@access.usask.ca> <1992Nov14.165511.23013@murdoch.acc.Virginia.EDU> <BxqDD5.Arw@zoo.toronto.edu>
  8. Sender: usenet@Apple.COM
  9. Followup-To: sci.space
  10. Organization: Apple Computer, Inc.
  11. Lines: 14
  12.  
  13. In article <BxqDD5.Arw@zoo.toronto.edu>, henry@zoo.toronto.edu (Henry
  14. Spencer) wrote:
  15. > 
  16. >...The new ones use rad-hard SRAM memory.
  17. >
  18.  
  19. With a few (16? 24?) extra bits per 32 bit word for error correction.  I'm
  20. not aware of any commercial portables that have error correcting memory
  21. (parity checking doesn't count!).
  22.  
  23. Craig Keithley
  24. Apple Computer, Inc.
  25. keithley@apple.com
  26. "I've got a bad feeling about this..." 
  27.