Re: Portability

Newsgroups	comp.lang.forth
Subject	Re: Portability
References	(7 earlier) <g5udnV5YkqvfSvjMnZ2dnUVZ_uKdnZ2d@supernews.com> <2013Apr11.152441@mips.complang.tuwien.ac.at> <kkgt30$311$1@dont-email.me> <2013Apr15.174615@mips.complang.tuwien.ac.at> <65f39492-54f0-463a-87fa-a77ddd58a693@e5g2000yqa.googlegroups.com>
From	Lars Brinkhoff <lars.spam@nocrew.org>
Organization	nocrew
Date	2013-04-17 19:26 +0200
Message-ID	<85txn5hxvr.fsf@junk.nocrew.org> (permalink)

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Sieur de Bienville <morrimichael@gmail.com> writes:
> I don't remember how the 68k CMP instruction works

Finally an excuse to break out the old M68000PM/AD.

  CMP

  Operation: Destination - Source => cc

  Description: Subtracts the source operand from the destination data
  register and sets the condition codes to the result; the data
  register is not changed.  The size of the operation can be byte,
  word, or long.

  Condition Codes:

  X - Not affected.
  N - Set if the result is negative; cleared otherwise.
  Z - Set if the result is zero; cleared otherwise.
  V - Set if an overflow occurs; cleared otherwise.
  C - Set if a borrow occurs; cleared otherwise.

And then e.g. BLT uses this test: N && !V || !N && V.

> but the IA-32 and the AMD64 CMP instruction is a nondestructive
> version of the SUB instruction.

So essentially the same.

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Thread

 Portability kenney@cix.compulink.co.uk - 2013-04-06 04:12 -0500
  Re: Portability albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-04-06 11:31 +0000
    Re: Portability "Elizabeth D. Rather" <erather@forth.com> - 2013-04-06 10:34 -1000
      Re: Portability "Ed" <invalid@nospam.com> - 2013-04-09 09:56 +1000
        Re: Portability albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-04-09 01:30 +0000
          Re: Portability anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-04-09 07:21 +0000
            Re: Portability "Elizabeth D. Rather" <erather@forth.com> - 2013-04-08 22:18 -1000
              Re: Portability anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-04-09 12:41 +0000
                Re: Portability Coos Haak <chforth@hccnet.nl> - 2013-04-09 17:21 +0200
                Re: Portability "Elizabeth D. Rather" <erather@forth.com> - 2013-04-09 08:06 -1000
                Re: Portability Bernd Paysan <bernd.paysan@gmx.de> - 2013-04-09 22:34 +0200
                Re: Portability "Elizabeth D. Rather" <erather@forth.com> - 2013-04-09 12:05 -1000
                Re: Portability "Elizabeth D. Rather" <erather@forth.com> - 2013-04-09 14:19 -1000
                Re: Portability Chris <xrissmith@me.com> - 2013-04-09 20:45 -0700
                Re: Portability "Ed" <invalid@nospam.com> - 2013-04-10 14:02 +1000
                Re: Portability Hugh Aguilar <hughaguilar96@yahoo.com> - 2013-04-09 23:00 -0700
                Re: Portability "WJ" <w_a_x_man@yahoo.com> - 2013-04-12 14:41 +0000
                Re: Portability "Ed" <invalid@nospam.com> - 2013-04-13 15:34 +1000
                Re: Portability anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-04-10 15:19 +0000
                Re: Portability albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-04-10 11:46 +0000
                Re: Portability anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-04-10 15:03 +0000
                Re: Portability Hugh Aguilar <hughaguilar96@yahoo.com> - 2013-04-09 18:28 -0700
            Re: Portability Hugh Aguilar <hughaguilar96@yahoo.com> - 2013-04-09 17:00 -0700
          Re: Portability "Ed" <invalid@nospam.com> - 2013-04-10 13:00 +1000
            Re: Portability albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-04-10 11:55 +0000
              Re: Portability Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-10 10:10 -0500
                Re: Portability anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-04-10 15:56 +0000
                Re: Portability Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-10 16:18 -0500
                Re: Portability anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-04-11 13:24 +0000
                Re: Portability Hugh Aguilar <hughaguilar96@yahoo.com> - 2013-04-11 20:50 -0700
                Re: Portability Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-12 04:17 -0500
                Re: Portability anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-04-12 13:43 +0000
                Re: Portability Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-12 11:08 -0500
                Re: Portability albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-04-12 18:50 +0000
                Re: Portability Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-13 03:57 -0500
                Re: Portability anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-04-13 11:59 +0000
                Re: Portability Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-13 14:47 -0500
                Re: Portability rickman <gnuarm@gmail.com> - 2013-04-12 10:44 -0400
                Re: Portability Bernd Paysan <bernd.paysan@gmx.de> - 2013-04-15 16:20 +0200
                Re: Portability "Elizabeth D. Rather" <erather@forth.com> - 2013-04-16 08:12 -1000
                Re: Portability "A.K." <akk@nospam.org> - 2013-04-16 22:21 +0200
                Re: Portability Bernd Paysan <bernd.paysan@gmx.de> - 2013-04-16 22:33 +0200
                Re: Portability "Ed" <invalid@nospam.com> - 2013-04-19 15:04 +1000
                Re: Portability anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-04-15 15:46 +0000
                Re: Portability Sieur de Bienville <morrimichael@gmail.com> - 2013-04-15 19:19 -0700
                Re: Portability anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-04-16 12:53 +0000
                Re: Portability rickman <gnuarm@gmail.com> - 2013-04-16 17:29 -0400
                Re: Portability "Elizabeth D. Rather" <erather@forth.com> - 2013-04-16 11:44 -1000
                Re: Portability rickman <gnuarm@gmail.com> - 2013-04-16 18:00 -0400
                Re: Portability Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-16 17:33 -0500
                Re: Portability "Elizabeth D. Rather" <erather@forth.com> - 2013-04-16 12:46 -1000
                Re: Portability rickman <gnuarm@gmail.com> - 2013-04-17 13:09 -0400
                Re: Portability Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-17 12:20 -0500
                Re: Portability "Elizabeth D. Rather" <erather@forth.com> - 2013-04-17 07:38 -1000
                Re: Portability Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-17 16:43 -0500
                Re: Portability rickman <gnuarm@gmail.com> - 2013-04-17 20:03 -0400
                Re: Portability Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-18 16:53 -0500
                Re: Portability rickman <gnuarm@gmail.com> - 2013-04-18 18:02 -0400
                Re: Portability Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-19 03:30 -0500
                Re: Portability rickman <gnuarm@gmail.com> - 2013-04-19 15:31 -0400
                Re: Portability anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-04-22 09:59 +0000
                Re: Portability Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-22 07:28 -0500
                Re: Portability anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-04-22 15:27 +0000
                Re: Portability Hugh Aguilar <hughaguilar96@yahoo.com> - 2013-04-22 18:16 -0700
                Re: Portability anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-04-17 10:23 +0000
                Re: Portability rickman <gnuarm@gmail.com> - 2013-04-17 13:46 -0400
                Re: Portability anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-04-22 09:47 +0000
                Re: Portability Brad Eckert <hwfwguy@gmail.com> - 2013-04-17 10:32 -0700
                Re: Portability nobody@nowhere - 2013-04-17 17:36 +0000
                Re: Portability rickman <gnuarm@gmail.com> - 2013-04-17 14:21 -0400
                Re: Portability Brad Eckert <hwfwguy@gmail.com> - 2013-04-17 15:03 -0700
                Re: Portability rickman <gnuarm@gmail.com> - 2013-04-17 18:22 -0400
                Re: Portability rickman <gnuarm@gmail.com> - 2013-04-17 18:24 -0400
                Re: Portability rickman <gnuarm@gmail.com> - 2013-04-18 00:51 -0400
                Re: Portability rickman <gnuarm@gmail.com> - 2013-04-18 17:19 -0400
                Re: Portability Brad Eckert <hwfwguy@gmail.com> - 2013-04-19 12:37 -0700
                Re: Portability rickman <gnuarm@gmail.com> - 2013-04-19 15:53 -0400
                Re: Portability Lars Brinkhoff <lars.spam@nocrew.org> - 2013-04-17 19:26 +0200
                Re: Portability albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-04-10 18:50 +0000
                Re: Portability Bernd Paysan <bernd.paysan@gmx.de> - 2013-04-10 22:14 +0200
                Re: Portability Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-12 04:18 -0500
                Re: Portability "Elizabeth D. Rather" <erather@forth.com> - 2013-04-12 08:30 -1000
                Re: Portability albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-04-12 18:58 +0000
                Re: Portability "Elizabeth D. Rather" <erather@forth.com> - 2013-04-12 11:29 -1000
              Re: Portability "Ed" <invalid@nospam.com> - 2013-04-13 14:57 +1000
        Re: Portability Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-09 04:11 -0500

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