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- Path: informatik.tu-muenchen.de!fischerj
- From: fischerj@Informatik.TU-Muenchen.DE (Juergen "Rally" Fischer)
- Newsgroups: comp.sys.amiga.programmer
- Subject: Re: PPC compilers
- Date: 1 Jan 1996 20:46:37 GMT
- Organization: Technische Universitaet Muenchen, Germany
- Distribution: world
- Message-ID: <4c9h7d$h3i@sunsystem5.informatik.tu-muenchen.de>
- References: <john.hendrikx.40ka@grafix.xs4all.nl> <0u2Px*sKe@yaps.rhein.de> <4bd9oo$rad@sunsystem5.informatik.tu-muenchen.de> <19951223.57F728.6866@sisyphus.demon.co.uk> <4bqdk8$6g5@sunsystem5.informatik.tu-muenchen.de> <19951227.542040.7590@sisyphus.demon.co.uk>
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-
- Dave.Sparks@sisyphus.demon.co.uk wrote:
- : >>>>> "JF" == Juergen "Rally" Fischer <fischerj@Informatik.TU-Muenchen.DE> writes:
-
- : The issue isn't whether or not it does it wrong, but whether what
- : it does is defined (for all 680xx processors). If you know what
- agree.
- : this instruction is _defined_ to do, quote the definition.
- : Motorola's definition, not yours.
-
- mhm, is Hitatchi doku also ok ?
-
- "adress register indirect with postincrement:
- The adress of the operand is in the adress register specified by the
- register field. AFTER THE OPERAND IS USED, IT IS INCREMENTED by one,
- two or four [...]"
-
- I would interpret "after operand is used" that way:
-
- when data from (a0) is read, a0 was used (used to build an adress).
- so a0 is incremented. then data is written at (a0)+.
-
- As there are AFAIK no warnings in the docu, it's IMHO legal to
- assume the logic way (if my test code isn't wrong, the EC020 behaves
- exactly that way. 060 users tell your experiences ;)
-
- : --
- : Dave.Sparks@sisyphus.demon.co.uk (Staffordshire, England)
-
- : ... details are more implementation-dependant than defined.
- -----------------------------------------------------------------------------
- // fischerj@Informatik.TU-Muenchen.DE (Juergen "Rally" Fischer)
- //
- \X/ My wishes for '96:
- may the AT promises come true. Amiga's back.
- -----------------------------------------------------------------------------
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