28 Jul
2010
28 Jul
'10
3:39 p.m.
Hi,
I am attempting to create an assembler to machine code table, something along the lines
of:
move.l a3,$12345678 -> $23 $CB $12 $34 $56 $78
Has anyone already done this? I don't mind whether the machine code is referenced in
hexadecimal, octal or binary. I just need this to help me out with something - I have
tried some disassemblers, but since they often (always?) turn data/text into ASM
instructions and create false jumps etc. I am attempting to do it by hand. But before I
can do that, I of course need the machine code references to start with!
Failing that I will just have to create it myself - I have started, but having realised
the number of possibilities for just the move.l instruction I feel that this could be
another long project....
Regards,
Andrew B
aliensrcooluk at yahoo.co.uk
28 Jul
28 Jul
3:49 p.m.
Hi
I have code in Forth that will assemble 68K code.
Dwight
Date: Wed, 28 Jul 2010 19:39:40 +0000
From: aliensrcooluk at yahoo.co.uk
Subject: M68000 ASM to machine code table
To: cctalk at classiccmp.org
Hi,
I am attempting to create an assembler to machine code table, something along the lines
of:
move.l a3,$12345678 -> $23 $CB $12 $34 $56 $78
Has anyone already done this? I don't mind whether the machine code is referenced in
hexadecimal, octal or binary. I just need this to help me out with something - I have
tried some disassemblers, but since they often (always?) turn data/text into ASM
instructions and create false jumps etc. I am attempting to do it by hand. But before I
can do that, I of course need the machine code references to start with!
Failing that I will just have to create it myself - I have started, but having realised
the number of possibilities for just the move.l instruction I feel that this could be
another long project....
Regards,
Andrew B
aliensrcooluk at yahoo.co.uk
3:55 p.m.
On 07/28/2010 03:39 PM, Andrew Burton wrote:
Hi,
I am attempting to create an assembler to machine code table, something along the lines
of:
move.l a3,$12345678 -> $23 $CB $12 $34 $56 $78
Has anyone already done this? I don't mind whether the machine code is referenced in
hexadecimal, octal or binary. I just need this to help me out with something - I have
tried some disassemblers, but since they often (always?) turn data/text into ASM
instructions and create false jumps etc. I am attempting to do it by hand. But before I
can do that, I of course need the machine code references to start with!
Failing that I will just have to create it myself - I have started, but having realised
the number of possibilities for just the move.l instruction I feel that this could be
another long project....
See if you can grab it out of gas or as sources.
as can be found here: http://john.ccac.rwth-aachen.de:8000/as/
or this: http://www.easy68k.com/
Generator ( http://squish.net/generator ) has these as well, plus a
disassembler, but the above links are probably easier. Generator code
is part of LisaEm, so grabbing LisaEm source would get you this too.
3:58 p.m.
actually this is probably exactly what you're after:
http://goldencrystal.free.fr/M68kOpcodes.pdf
4:32 p.m.
Yes, that's exactly what I'm after. Thank you (and everyone else) for the help.
I did try googling, but my choice of keywords kept sending me to wikipedia and various
sites containing just assembler information.
Regards,
Andrew B
aliensrcooluk at yahoo.co.uk
--- On Wed, 28/7/10, Ray Arachelian <ray at arachelian.com> wrote:
From: Ray Arachelian <ray at arachelian.com>
Subject: Re: M68000 ASM to machine code table
To: "On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>
Date: Wednesday, 28 July, 2010, 20:58
actually this is probably exactly what you're after:
http://goldencrystal.free.fr/M68kOpcodes.pdf
4:01 p.m.
I am attempting to create an assembler to machine code
table, something
along the lines of:
move.l a3,$12345678 -> $23 $CB $12 $34 $56 $78
It appears the reason this doesn't exist in the form you describe is
because of a somewhat bit-by-bit encoding. You already stumbled over
this.
But googling (hint) finds:
http://goldencrystal.free.fr/M68kOpcodes.pdf
http://www.ticalc.org/pub/text/68k/68kpm.zip
De
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aliensrcooluk＠yahoo.co.uk -
dkelvey＠hotmail.com -
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