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Groups > comp.sys.acorn.programmer > #1908

Re: Assembler Help.

From Chris Johnson <chrisjohnson+news@spamcop.net>
Subject Re: Assembler Help.
Newsgroups comp.sys.acorn.programmer
Date 2012-07-10 18:06 +0100
Message-ID <52ad2f569bchrisjohnson+news@spamcop.net> (permalink)
References <c12eb9f2-2787-4586-960d-3121d5ba7ddf@6g2000vbv.googlegroups.com> <d85a2742-0924-4fe1-8158-54a791faf478@j9g2000vbk.googlegroups.com>
Organization None

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In article
<d85a2742-0924-4fe1-8158-54a791faf478@j9g2000vbk.googlegroups.com>,
   Gazza <usenet@garethlock.com> wrote:
>  LDR R0,tmpbyte3
>  STRB #31,[R0],#1                 ; VDU 31,col,row (col is R1, row is
> R2)
>  STRB R1,[R0],#1
>  STRB R2,[R0],#1
>  MOV R1,#3                          ; Write 3 bytes.
> ...
> Call OS to write sequence to VDU drivers.
> Do the rest of the display string routine.
> ...

You probably want something like:

mov  r0, #31
swi  "XOS_WriteC"
mov  r0, r1
swi  "XOS_WriteC"
mov  r0, r2
swi  "XOS_WriteC"

-- 
Chris Johnson

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Thread

Assembler Help. Gazza <usenet@garethlock.com> - 2012-07-10 07:09 -0700
  Re: Assembler Help. Gazza <usenet@garethlock.com> - 2012-07-10 08:46 -0700
    Re: Assembler Help. Chris Johnson <chrisjohnson+news@spamcop.net> - 2012-07-10 18:06 +0100
      Re: Assembler Help. jgharston <jgh@arcade.demon.co.uk> - 2012-07-11 11:26 -0700
        Re: Assembler Help. cferris@freeRemoveuk.com.invalid - 2012-07-11 20:05 +0100
          Re: Assembler Help. jgharston <jgh@arcade.demon.co.uk> - 2012-07-11 15:16 -0700
          Re: Assembler Help. Steve Drain <steve@kappa.me.uk> - 2012-07-12 10:25 +0100
            Re: Assembler Help. cferris@freeRemoveuk.com.invalid - 2012-07-13 09:23 +0100
              Re: Assembler Help. Steve Drain <steve@kappa.me.uk> - 2012-07-13 11:16 +0100
                Re: Assembler Help. Gazza <usenet@garethlock.com> - 2012-07-24 05:17 -0700
                Re: Assembler Help. Gavin Wraith <gavin@wra1th.plus.com> - 2012-07-24 14:02 +0100
                Re: Assembler Help. Gazza <usenet@garethlock.com> - 2012-07-24 06:49 -0700
                Re: Assembler Help. Steve Drain <steve@kappa.me.uk> - 2012-07-24 15:03 +0100
                Re: Assembler Help. usenet@garethlock.com - 2012-07-24 08:21 -0700
                Re: Assembler Help. Steve Drain <steve@kappa.me.uk> - 2012-07-24 17:55 +0100
                Re: Assembler Help. Theo Markettos <theom+news@chiark.greenend.org.uk> - 2012-08-03 20:26 +0100
                Re: Assembler Help. cferris@freeRemoveuk.com.invalid - 2012-08-05 08:51 +0100
                Re: Assembler Help. Martin Bazley <martin.bazley@blueyonder.co.uk> - 2012-07-24 20:04 +0100
                Re: Assembler Help. Gazza <usenet@garethlock.com> - 2012-07-24 14:16 -0700
                Re: Assembler Help. Jeremy Nicoll - news posts <jn.nntp.scrap007@wingsandbeaks.org.uk> - 2012-07-24 22:34 +0100
                Re: Assembler Help. Chris Johnson <chrisjohnson+news@spamcop.net> - 2012-07-24 23:56 +0100
                Re: Assembler Help. Martin Bazley <martin.bazley@blueyonder.co.uk> - 2012-07-25 01:42 +0100
                Re: Assembler Help. Gazza <usenet@garethlock.com> - 2012-08-03 05:54 -0700
                Re: Assembler Help. Martin Bazley <martin.bazley@blueyonder.co.uk> - 2012-08-03 17:52 +0100
                Re: Assembler Help. "Barry Allen (news)" <evanallen@onetel.net.uk.invalid> - 2012-08-04 10:21 +0100
                Re: Assembler Help. Gazza <usenet@garethlock.com> - 2012-08-04 15:57 -0700
                Re: Assembler Help. cferris@freeRemoveuk.com.invalid - 2012-08-05 08:48 +0100
                Re: Assembler Help. Martin <News03@avisoft.f9.co.uk> - 2012-08-06 10:00 +0100
                Re: Assembler Help. Theo Markettos <theom+news@chiark.greenend.org.uk> - 2012-08-06 13:26 +0100
                Re: Assembler Help. Martin <News03@avisoft.f9.co.uk> - 2012-08-06 23:13 +0100
                Re: Assembler Help. Gazza <usenet@garethlock.com> - 2012-08-07 08:50 -0700
                Re: Assembler Help. Gazza <usenet@garethlock.com> - 2012-08-07 15:43 -0700
                Re: Assembler Help. Martin Bazley <martin.bazley@blueyonder.co.uk> - 2012-08-08 00:52 +0100
                Re: Assembler Help. usenet@garethlock.com - 2012-08-08 02:03 -0700
                Re: Assembler Help. jeffrey.a.doggett@gmail.com - 2012-08-08 02:19 -0700
                Re: Assembler Help. druck <news@druck.org.uk> - 2012-08-12 09:05 +0100
                Re: Assembler Help. Frank de Bruijn <zuiderduin@hotmail.com> - 2012-08-08 11:40 +0200
                Re: Assembler Help. Jeremy Nicoll - news posts <jn.nntp.scrap007@wingsandbeaks.org.uk> - 2012-08-08 11:34 +0100
                Re: Assembler Help. Justin Fletcher <gerph@gerph.org> - 2012-08-09 21:19 +0100
                Re: Assembler Help. druck <news@druck.org.uk> - 2012-08-12 09:08 +0100
                Re: Assembler Help. Gazza <usenet@garethlock.com> - 2012-08-14 05:17 -0700
                Re: Assembler Help. Chris Johnson <chrisjohnson+news@spamcop.net> - 2012-08-14 14:50 +0100
                Re: Assembler Help. Martin Bazley <martin.bazley@blueyonder.co.uk> - 2012-08-14 15:03 +0100
                Re: Assembler Help. Martin Bazley <martin.bazley@blueyonder.co.uk> - 2012-08-14 14:59 +0100
                Re: Assembler Help. Gazza <usenet@garethlock.com> - 2012-08-15 17:01 -0700
                Re: Assembler Help. Gazza <usenet@garethlock.com> - 2012-08-21 03:54 -0700
                Re: Assembler Help. Martin <News03@avisoft.f9.co.uk> - 2012-08-21 12:27 +0100
                Re: Assembler Help. Gazza <usenet@garethlock.com> - 2012-08-21 05:08 -0700
                Re: Assembler Help. Gazza <usenet@garethlock.com> - 2012-08-21 05:25 -0700
                Re: Assembler Help. Gazza <usenet@garethlock.com> - 2012-08-21 08:23 -0700
                Re: Assembler Help. druck <news@druck.org.uk> - 2012-08-21 18:19 +0100
                Re: Assembler Help. Gazza <usenet@garethlock.com> - 2012-08-21 14:20 -0700
                Re: Assembler Help. cferris@freeRemoveuk.com.invalid - 2012-08-22 09:07 +0100
                Re: Assembler Help. Gazza <usenet@garethlock.com> - 2012-08-22 05:28 -0700
                Re: Assembler Help. Steve Fryatt <news@stevefryatt.org.uk> - 2012-08-22 14:47 +0100
                Re: Assembler Help. druck <news@druck.org.uk> - 2012-08-22 23:11 +0100
                Re: Assembler Help. Martin Bazley <martin.bazley@blueyonder.co.uk> - 2012-08-29 18:36 +0100
                Re: Assembler Help. Jeremy Nicoll - news posts <jn.nntp.scrap007@wingsandbeaks.org.uk> - 2012-08-22 09:38 +0100
                Re: Assembler Help. jgh@arcade.demon.co.uk (Jonathan Graham Harston) - 2012-08-08 23:15 +0100
                Re: Assembler Help. Martin Bazley <martin.bazley@blueyonder.co.uk> - 2012-08-09 13:59 +0100
                Re: Assembler Help. Steve Drain <steve@kappa.me.uk> - 2012-08-10 15:50 +0100
  Re: Assembler Help. Frank de Bruijn <zuiderduin@hotmail.com> - 2012-07-11 08:30 +0200
    Re: Assembler Help. cferris@freeRemoveuk.com.invalid - 2012-07-11 09:26 +0100

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