home *** CD-ROM | disk | FTP | other *** search
/ NetNews Offline 2 / NetNews Offline Volume 2.iso / news / comp / sys / amiga / misc-part1 / 277 < prev    next >
Encoding:
Internet Message Format  |  1996-08-05  |  1.6 KB
  1. Path: ArtWorks.apana.org.au!Snark!not-for-mail
  2. From: james@Snark.apana.org.au (James Burton)
  3. Newsgroups: comp.sys.amiga.misc
  4. Subject: Re: OS features
  5. Date: 4 Jan 1996 00:51:00 GMT
  6. Organization: Melbourne ArtWorks
  7. Message-ID: <4cf89k$gfk@ArtWorks.apana.org.au>
  8. References: <49tus6$os0@news.missouri.edu> <92747544038@PAPA.NORTH.DE>   <4b3h9s$1st@alterdial.UU.NET> <2152.6561T63T2136@cycor.ca>  <4b7i18$si1@vixen.cso.uiuc.edu> <2361.6563T633T582@cycor.ca> <4bcf3r$5gd@serpens.rhein.de> <1074.6565T1223T2767@cycor.ca> <4bkubh$2t6@serpens.rhein.de> <4bp8hu$d37@usenet.rpi.edu> <4c6rpr$q6g@news.jhu.edu> <ludde.820464192@nada.kth.se> <4cbkp4$lqh@usenet.rpi.edu>
  9. NNTP-Posting-Host: snark.apana.org.au
  10. X-Newsreader: TIN [AMIGA 1.3 950726BETA PL0]
  11.  
  12. Christopher D. Judd (cdj@gmk02.chem.rpi.edu) wrote:
  13. ->     To be precise, 68000 + other logic can do memory protection.
  14. -> 
  15. ->     Virtual memory requires 68010 or higher.
  16.  
  17. That's funny. With an added chip I swear you could do VM on a 6800 machine.
  18. In fact I seem to remember in my electronics notes that Hitachi made a later
  19. version of the 6800 called the 6809 which included that extra chip on the
  20. same fabrication as the processor. There was a recent discussion on another
  21. newsgroup about different techniques for getting 68000 CPUs to restart
  22. instructions after a page fault was serviced. Let's not say that it's
  23. impossible, just awkward.
  24.  
  25. James
  26.  
  27. -- 
  28. James Burton, Melbourne, Australia.|Every jumbled pile of person has a
  29. James@Snark.apana.org.au           |thinking part that wonders what the 
  30. http://Snark.APANA.org.au/james/   |part that isn't thinking isn't thinking of
  31.