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Groups > comp.lang.forth > #57142

Re: 6502 anyone ?

From Lars Brinkhoff <lars.spam@nocrew.org>
Newsgroups comp.lang.forth
Subject Re: 6502 anyone ?
Organization nocrew
References <MPG.3356d7644c407db2989707@news.virginmedia.com> <ock6so$33k$3@dont-email.me> <a1198ea9-473f-477c-b88b-4f95c5f53008@googlegroups.com> <86h91uui7d.fsf@molnjunk.nocrew.org> <ockvej$6ut$1@cherry.spenarnc.xs4all.nl>
Date 2017-04-12 12:53 +0200
Message-ID <868tn5vqv8.fsf@molnjunk.nocrew.org> (permalink)

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Albert van der Horst wrote:
> If you know the chip you realize that it has 128 16 bit registers on
> the zero page.

Of course proper use of the zero page is important in 6502 programming.
But can you honestly call them registers?  They reside in external RAM,
so that's goes against the regular meaning of registers.  If you ignore
that implementation detail, the programming model still don't expose
them as 16-bit register-like entities.  You can only deal with chunks of
8 bits at a time.

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Thread

6502 anyone ? john <anon@example.com> - 2017-04-11 13:07 +0100
  Re: 6502 anyone ? rickman <gnuarm@gmail.com> - 2017-04-11 23:31 -0400
    Re: 6502 anyone ? Mark Wills <markwills1970@gmail.com> - 2017-04-12 01:27 -0700
      Re: 6502 anyone ? Lars Brinkhoff <lars.spam@nocrew.org> - 2017-04-12 10:46 +0200
        Re: 6502 anyone ? Mark Wills <markwills1970@gmail.com> - 2017-04-12 01:57 -0700
          Re: 6502 anyone ? Lars Brinkhoff <lars.spam@nocrew.org> - 2017-04-12 12:24 +0200
          Re: 6502 anyone ? hughaguilar96@gmail.com - 2017-04-12 14:37 -0700
            Re: 6502 anyone ? lehs <skydda.barnen@gmail.com> - 2017-04-12 17:16 -0700
              Re: 6502 anyone ? hughaguilar96@gmail.com - 2017-04-12 18:10 -0700
                Re: 6502 anyone ? lehs <skydda.barnen@gmail.com> - 2017-04-12 23:46 -0700
                Re: 6502 anyone ? rickman <gnuarm@gmail.com> - 2017-04-13 03:00 -0400
                Re: 6502 anyone ? lehs <skydda.barnen@gmail.com> - 2017-04-13 00:37 -0700
                Re: 6502 anyone ? lehs <skydda.barnen@gmail.com> - 2017-04-13 00:42 -0700
                Re: 6502 anyone ? rickman <gnuarm@gmail.com> - 2017-04-13 12:57 -0400
                Re: 6502 anyone ? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-04-13 12:01 -0500
                Re: 6502 anyone ? lehs <skydda.barnen@gmail.com> - 2017-04-13 10:42 -0700
                Re: 6502 anyone ? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-04-13 12:55 -0500
                Re: 6502 anyone ? lehs <skydda.barnen@gmail.com> - 2017-04-13 11:13 -0700
                Re: 6502 anyone ? rickman <gnuarm@gmail.com> - 2017-04-13 14:24 -0400
                Re: 6502 anyone ? lehs <skydda.barnen@gmail.com> - 2017-04-13 11:57 -0700
                Re: 6502 anyone ? rickman <gnuarm@gmail.com> - 2017-04-13 15:15 -0400
                Re: 6502 anyone ? rickman <gnuarm@gmail.com> - 2017-04-13 14:23 -0400
        Re: 6502 anyone ? john <anon@example.com> - 2017-04-12 10:25 +0100
        Re: 6502 anyone ? albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2017-04-12 12:27 +0200
          Re: 6502 anyone ? Lars Brinkhoff <lars.spam@nocrew.org> - 2017-04-12 12:53 +0200
            Re: 6502 anyone ? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-04-12 12:55 +0000
              Re: 6502 anyone ? rickman <gnuarm@gmail.com> - 2017-04-12 12:20 -0400
          Re: 6502 anyone ? Mark Wills <markwills1970@gmail.com> - 2017-04-12 05:10 -0700
            Re: 6502 anyone ? Michael Barry <barrym95838@yahoo.com> - 2017-04-12 22:41 -0700
          Re: 6502 anyone ? Joel Rees <joel.rees@gmail.com> - 2017-04-13 02:14 -0700
            Re: 6502 anyone ? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-04-13 11:01 +0000
              Re: 6502 anyone ? jim.brakefield@ieee.org - 2017-04-13 06:33 -0700
                Re: 6502 anyone ? Mark Wills <markwills1970@gmail.com> - 2017-04-13 07:24 -0700
                Re: 6502 anyone ? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-04-13 09:51 -0500
                Re: 6502 anyone ? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-04-13 17:16 +0000
                Re: 6502 anyone ? hughaguilar96@gmail.com - 2017-04-13 13:08 -0700
              Re: 6502 anyone ? Joel Rees <joel.rees@gmail.com> - 2017-04-14 08:06 -0700
            Re: 6502 anyone ? rickman <gnuarm@gmail.com> - 2017-04-13 13:00 -0400
      Re: 6502 anyone ? "HAA" <someone@microsoft.com> - 2017-04-13 10:42 +1000
        Re: 6502 anyone ? hughaguilar96@gmail.com - 2017-04-12 18:45 -0700
          Re: 6502 anyone ? "HAA" <someone@microsoft.com> - 2017-04-14 13:01 +1000
            Re: 6502 anyone ? rickman <gnuarm@gmail.com> - 2017-04-14 01:21 -0400
            Re: 6502 anyone ? hughaguilar96@gmail.com - 2017-04-13 23:23 -0700
    Re: 6502 anyone ? john <anon@example.com> - 2017-04-12 10:08 +0100

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