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Re: Screen Scrolling

From	Brian Patrie <bpatrie@bellsouth.spamisicky.net>
Newsgroups	comp.sys.apple2
Subject	Re: Screen Scrolling
Date	2022-05-13 02:15 -0500
Organization	an elaborate system of piles and accidents
Message-ID	<t5l0ij$10lt$1@gioia.aioe.org> (permalink)
References	(1 earlier) <5e80af7d-ec2f-4627-9e96-894c057657a3n@googlegroups.com> <f812d193-6a9e-4bfa-b896-8c6fdcef1f44n@googlegroups.com> <t5a3r0$eq8$1@dont-email.me> <bd3e3948-4f32-4e30-9b2b-49b98d034bcfn@googlegroups.com> <t5c5t4$hib$1@gioia.aioe.org>

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Brian Patrie wrote:
> qkumba wrote:
>>> This doesn't work in 80 columns.
>>
>> Though it can:
>>
>> 33 POKE 49237,0
>> 35 HLIN 0,39 AT I * 2
>> 38 POKE 49236,0
> 
> Sorta.  This mod will work on a IIe, or IIee, but will misbehave on a 
> IIc, IIc+, or IIgs--which support DGR in firmware.  So you'd need to 
> determine what you're running on, and act accordingly (or roll your own 
> PLOT, HLINE, VLINE code).

Erratum: This only seems to apply to AppleSoft--not the ml PLOT, VLINE, 
and HLINE calls.  (Tested with an emulated IIgs3.)

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Thread

Screen Scrolling "duhas...@gmail.com" <duhast6377@gmail.com> - 2022-05-06 20:38 -0700
  Re: Screen Scrolling barrym95838 <barrym95838@yahoo.com> - 2022-05-07 01:46 -0700
    Re: Screen Scrolling qkumba <peter.ferrie@gmail.com> - 2022-05-07 12:39 -0700
      Re: Screen Scrolling barrym95838 <barrym95838@yahoo.com> - 2022-05-08 01:24 -0700
      Re: Screen Scrolling kegs@provalid.com (Kent Dickey) - 2022-05-09 04:03 +0000
        Re: Screen Scrolling qkumba <peter.ferrie@gmail.com> - 2022-05-09 09:41 -0700
          Re: Screen Scrolling Brian Patrie <bpatrie@bellsouth.spamisicky.net> - 2022-05-09 17:51 -0500
            Re: Screen Scrolling Brian Patrie <bpatrie@bellsouth.spamisicky.net> - 2022-05-13 02:15 -0500
        Re: Screen Scrolling qkumba <peter.ferrie@gmail.com> - 2022-05-09 09:42 -0700
        Re: Screen Scrolling Brian Patrie <bpatrie@bellsouth.spamisicky.net> - 2022-05-09 17:40 -0500
          Re: Screen Scrolling "duhas...@gmail.com" <duhast6377@gmail.com> - 2022-05-10 18:55 -0700
            Re: Screen Scrolling Jerry Penner <jerry+a2@jpen.ca> - 2022-05-10 21:57 -0600
              Re: Screen Scrolling Oliver Schmidt <ol.sc@web.de> - 2022-05-11 07:33 +0000
              Re: Screen Scrolling Brian Patrie <bpatrie@bellsouth.spamisicky.net> - 2022-05-13 02:33 -0500
  Re: Screen Scrolling I am Rob <gids.rs@sasktel.net> - 2022-05-07 14:22 -0700
  Re: Screen Scrolling Speccie <someone@somewhere.com> - 2022-05-08 07:55 +0100
  Re: Screen Scrolling mmphosis <mmphosis@macgui.com> - 2022-05-13 16:39 +0000

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