Newsgroups: comp.arch
Path: utzoo!henry
From: henry@utzoo.uucp (Henry Spencer)
Subject: Re: PUSH on i8088/i80x86
Message-ID: <1990Jan15.172208.772@utzoo.uucp>
Organization: U of Toronto Zoology
References: <1261570140@<182DAVISTD@MSU> <>> <208300005@prism> <1990Jan15.064658.1816@waikato.ac.nz>
Date: Mon, 15 Jan 90 17:22:08 GMT

In article <1990Jan15.064658.1816@waikato.ac.nz> ldo@waikato.ac.nz (Lawrence D'Oliveiro) writes:
>	mov	sp, -(sp)
>
>is supposed to give different results on different members of
>the PDP-11 family. I may be wrong...

Nope, you're correct.  Using the same register as the source and as the
subject of autoinc/dec in the destination gives model-specific results
on the 11.  There are two or three other such fuzzy spots.
-- 
1972: Saturn V #15 flight-ready|     Henry Spencer at U of Toronto Zoology
1990: birds nesting in engines | uunet!attcan!utzoo!henry henry@zoo.toronto.edu