Chuck.Phillips@FtCollins.NCR.COM (Chuck.Phillips) (07/06/90)
>>>>> On 5 Jul 90 17:05:54 GMT, daveh@cbmvax.commodore.com (Dave Haynie) said:
Dave> The "while" for software to become 68020/30 compatible has passed. We
Dave> shipped 68020 systems almost two years ago. Most of the guidelines for
Dave> 680x0 compatibility have been in place since the beginning of Amiga-time,
Dave> and I did a complete analysis of this at the Washington DC DevCon in the
Dave> spring of '88.
Here, here! Question: Have guidelines for MC68040 compatibility been
published? The MC68040 carries some additional restrictions compared to
the 020 and 030; a few instructions have been dropped and there are new
restrictions on instruction (data?) alignment.
Also, could one expect normal (no dirty tricks) C code to run on an 040
based Amiga if compiled using the most recent Lattice or Manx C compilers?
Thanks in advance,
--
Chuck Phillips MS440
NCR Microelectronics Chuck.Phillips%FtCollins.NCR.com
Ft. Collins, CO. 80525 uunet!ncrlnk!ncr-mpd!bach!chuckpvalentin@cbmvax.commodore.com (Valentin Pepelea) (07/07/90)
In article <CHUCK.PHILLIPS.90Jul6110834@halley.FtCollins.NCR.COM> Chuck.Phillips@FtCollins.NCR.COM (Chuck.Phillips) writes: > >Here, here! Question: Have guidelines for MC68040 compatibility been >published? The MC68040 carries some additional restrictions compared to >the 020 and 030; a few instructions have been dropped and there are new >restrictions on instruction (data?) alignment. The same restrictions apply to 68040-friendly code as to 68030-friendly code. Useage of self-modifying code is going to fail more frequently on the '040 since it has a much larger internal cache. Otherwise, there are no new gotchas. Valentin -- The Goddess of democracy? "The tyrants Name: Valentin Pepelea may distroy a statue, but they cannot Phone: (215) 431-9327 kill a god." UseNet: cbmvax!valentin@uunet.uu.net - Ancient Chinese Proverb Claimer: I not Commodore spokesman be