Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!samsung!uunet!mcsun!unido!uklirb!kirchner
From: kirchner@uklirb.informatik.uni-kl.de (Reinhard Kirchner)
Newsgroups: comp.sys.m68k
Subject: CALLM and RTM ( was: Re: 68040 not object code compatible?
Message-ID: <2609@uklirb.informatik.uni-kl.de>
Date: 28 Feb 90 10:24:17 GMT
References: <4975@scolex.sco.COM>
Organization: University of Kaiserslautern, W-Germany
Lines: 13

From article <4975@scolex.sco.COM>, by seanf@sco.COM (Sean Fagan):
> 
> Only one member of the 68k family implements the CALLM (and RETM)
> instructions:  the 68020.  Nobody used it, apparantly, so it was dropped by
> the time the '30 came out.
> 
I remember on Electrica '88 a man from Motorola told me that CALLM and RTM
where included because of a specific customer ( he didn't tell me which one )
and that this customer then did not use these instructions. So they where
left out later on.

R. Kirchner
Univ. of Kaiserslautern, W-Germany   kirchner@uklirb.informatik.uni-kl.de