Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!linus!decvax!ittvax!sii!mem
From: mem@sii.UUCP (Mark Mallett)
Newsgroups: net.micro.68k
Subject: Re: Godless 68000 instruction set
Message-ID: <368@sii.UUCP>
Date: Tue, 3-Jan-84 23:07:46 EST
Article-I.D.: sii.368
Posted: Tue Jan  3 23:07:46 1984
Date-Received: Thu, 5-Jan-84 00:32:48 EST
Lines: 25

b
Ayup there are a lot of holes in the 68000 instruction set, and a number
of irritating features.  But it DOES exist.

A couple of things that I found aggravating about the 68000 are the
processor manual and the Motorola universal (being written in Pascal...)
assembler/linker.

The manual:

	does not give an index of instructions by opcode.  aarrgghh.

	Describes the addressing modes in its opening chapters using
	an obscure and idiotic notation (which seems to have been
	adopted by some assemblers...), then goes on to give its
	detailed examples and addressing mode tables in a completely
	different format; the one actually used by their assembler.


Nothing really needs to be said about the assembler/linker.  I had
to use it- it was the only thing around for a while.  I also looked
at the sources; came away shaking head.

Mark E. Mallett
decvax!sii!mem