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From: dix@clinet.FI (Risto Kaivola)
Newsgroups: comp.sys.amiga
Subject: The Amiga Assembler Standard
Summary: Existance and other things
Message-ID: <2520@clinet.FI>
Date: 19 Aug 90 12:24:40 GMT
Organization: City Lines Oy
Lines: 37
Sender:


    Is the current (or de facto) standard for the Amiga assembler syntax
    described in The AmigaDOS Manual 2nd Edition, part Developer's
    Manual, chapter 'The Macro Assembler'? If it isn't (is only an
    overview of the standard), from where can I get the standard?

    In the rest of this article, I assume that the standard is indeed
    described in that book. So, I have the following questions.

    It seems to be that, in some cases, the Amiga form of effective
    addressing mode differs from that of Motorola (e.g. Address
    Register Indirect with Displacement). What was the reason for
    the developers of the Amiga Macro Assembler to introduce this
    kind of incompatibility (I'm just interested :-)?

    Anyway, now it seems to be that we've got two different standards.
    What I'm asking is the correct Amiga-expression for the following
    Effective Addressing Modes:

    The Name Of the Addressing Mode    Motorola Assembler Syntax

1)   Memory Indirect Postindexed       ([bd,An],Xn,od)
2)   Memory Indirect Preindexed        ([bd,An,Xn],od)
3)   PC Memory Indirect Postindexed    ([bd,PC],Xn,od)
4)   PC Memory Indirect Preindexed     ([bd,PC,Xn],od)

    I don't know of any assembler that let's me to use the Motorola
    syntax, so I thought there might be general interest to discuss
    this topic (provided that it hasn't been discussed before...).

    Information appreciated,
Risto
-- 
Risto Kaivola                                   Jakalatie 2 B 10
Internet: dix@clinet.fi                         00730 Helsinki
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