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Re: Activating Soft-Switches in Assembly

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From D Finnigan <dog_cow@macgui.com>
Newsgroups comp.sys.apple2.programmer
Subject Re: Activating Soft-Switches in Assembly
Date Wed, 30 Mar 2016 18:28:13 -0000 (UTC)
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alxmist wrote:
>
> and how do I activate them either way? Do
> the $C050's require a JSR?
>

No, you just reference the location with a load instruction. Use whichever
(A,X, or Y) is convenient in your code.

Don't try to JMP or JSR to the soft switch location, because there's no
valid instructions there for the 6502 to execute.

-- 
]DF$
The Marina IP stack for Apple II--
http://marina.a2hq.com/

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Thread

Activating Soft-Switches in Assembly alxmist@aol.com - 2016-03-29 09:00 -0700
  Re: Activating Soft-Switches in Assembly Michael Pohoreski <michael.pohoreski@gmail.com> - 2016-03-29 15:14 -0700
  Re: Activating Soft-Switches in Assembly Michael Pohoreski <michael.pohoreski@gmail.com> - 2016-03-29 15:28 -0700
    Re: Activating Soft-Switches in Assembly Michael Pohoreski <michael.pohoreski@gmail.com> - 2016-03-29 15:32 -0700
      Re: Activating Soft-Switches in Assembly alxmist@aol.com - 2016-03-30 09:31 -0700
        Re: Activating Soft-Switches in Assembly Antoine Vignau <antoine.vignau@laposte.net> - 2016-03-30 10:58 -0700
          Re: Activating Soft-Switches in Assembly alxmist@aol.com - 2016-03-30 11:23 -0700
            Re: Activating Soft-Switches in Assembly D Finnigan <dog_cow@macgui.com> - 2016-03-30 18:28 +0000
              Re: Activating Soft-Switches in Assembly Michael J. Mahon <mjmahon@aol.com> - 2016-03-30 23:46 -0500
              Re: Activating Soft-Switches in Assembly mmphosis <mmphosis@macgui.com> - 2016-03-31 16:07 +0000
            Re: Activating Soft-Switches in Assembly Michael Pohoreski <michael.pohoreski@gmail.com> - 2016-03-30 14:10 -0700
        Re: Activating Soft-Switches in Assembly gids.rs@sasktel.net - 2016-03-30 13:06 -0700
          Re: Activating Soft-Switches in Assembly Michael Pohoreski <michael.pohoreski@gmail.com> - 2016-03-30 14:13 -0700
            Re: Activating Soft-Switches in Assembly gids.rs@sasktel.net - 2016-03-31 08:25 -0700
              Re: Activating Soft-Switches in Assembly alxmist@aol.com - 2016-03-31 08:52 -0700
                Re: Activating Soft-Switches in Assembly Michael J. Mahon <mjmahon@aol.com> - 2016-03-31 11:30 -0500
                Re: Activating Soft-Switches in Assembly Michael Pohoreski <michael.pohoreski@gmail.com> - 2016-03-31 12:33 -0700
                Re: Activating Soft-Switches in Assembly Michael Pohoreski <michael.pohoreski@gmail.com> - 2016-03-31 12:59 -0700
                Re: Activating Soft-Switches in Assembly Mark Calderbank <noname@test.com> - 2016-04-01 15:54 +0100
                Re: Activating Soft-Switches in Assembly Mark Calderbank <mark@zoot.loggytronic.net> - 2016-04-01 16:36 +0100
                Re: Activating Soft-Switches in Assembly alxmist@aol.com - 2016-04-01 09:58 -0700
                Re: Activating Soft-Switches in Assembly Michael J. Mahon <mjmahon@aol.com> - 2016-04-01 17:07 -0500
                Re: Activating Soft-Switches in Assembly Michael Pohoreski <michael.pohoreski@gmail.com> - 2016-04-01 17:45 -0700
                Re: Activating Soft-Switches in Assembly alxmist@aol.com - 2016-04-05 08:59 -0700
            Re: Activating Soft-Switches in Assembly "Michael J. Mahon" <mjmahon@aol.com> - 2016-03-31 12:28 -0700

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