Path: utzoo!utgpu!water!watmath!clyde!bellcore!decvax!decwrl!hplabs!hpcea!hpnmd!hpsrla!hpmwtla!jeffa
From: jeffa@hpmwtla.HP.COM (Jeff Aguilera)
Newsgroups: comp.sys.hp
Subject: Re: Sun as vs. HPUX as
Message-ID: <2620002@hpmwtla.HP.COM>
Date: 16 Jan 88 00:56:56 GMT
References: <822@ucdavis.ucdavis.edu>
Organization: HP MicroWave Technology - Santa Rosa,CA
Lines: 29

I use HP-UX 5.5, so take this with a grain of salt.

Under 5.5, there is a utility called atrans that converts
from the regular Series/200 format (the one published by
Motorola) to HP-UX format.  If this doesn't exist, or
doesn't work, then...

HP swapped the order of operands in compares:

	cmpa.l	%a0,%a1  ==>	cmpa.l	%a1,%a0

HP requires that the various fields in the addressing mode
be given in a particular order; Motorola specifies that
order is unimportant.

A helpful manual might be HP-UX Assembler Reference Manual
and ADB Tutorial (P/N 98597-90020).  Chapter 7 (Address Mode
Syntax) and Chapter 8 (Instruction Sets) might be of help.

The required order for addressing modes, by the way is

([bd,An],Ri*{scale},od)
([bd,An,Ri*{scale}],od)

etc.

Note that the scale must come after the index!

Good luck!