Groups > comp.sys.apple2.programmer > #4218

Re: A Peekin and a Pokin...

From	Brian Patrie <bpatrie@bellsouth.spamisicky.net>
Newsgroups	comp.sys.apple2.programmer
Subject	Re: A Peekin and a Pokin...
Date	2018-02-15 00:22 -0600
Organization	Aioe.org NNTP Server
Message-ID	<p638vi$194n$1@gioia.aioe.org> (permalink)
References	<2a1f7d29-0d95-4062-add7-701c8b227cb1@googlegroups.com> <p5tkos$n6o$1@gioia.aioe.org> <daf3c98e-901b-4100-a48f-b5e82d4bfbe0@googlegroups.com>

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On 2018-02-14 20:30, Anthony Ortiz wrote:
> On Monday, February 12, 2018 at 10:07:12 PM UTC-5, Brian Patrie wrote:
>> On 2018-02-10 18:48, Anthony Ortiz wrote:
>>> Also, I tried a small basic program in sather's book (page 5-27) and it freezes AppleWin :
>>>
>>> 10 POKE -16383,0 : REM SET 80STORE
>>> 20 POKE -16299,0 : REM PAGE2 = AUX = EVEN
>>> 30 POKE 1024,193 : REM DISPLAY "A" AT TOP LEFT
>>>
>>> Is this a bug or am I missing something?
>>
>> It took me a minute to realize what's happening here.  The (emulated)
>> machine is not freezing.  It's just that the writes to the display are
>> all going to aux-mem; and, since it's in 40-column mode, you can't see
>> them.  (It's fine in 80-column mode.)  POKE -16300,0 to get writes going
>> back to main-mem.
> 
> You're right, it wasn't frozen and the poke got me back; however, no A was displayed in upper left. Was Sather smoking some of the good stuff?

The A also went to aux-mem.  POKE -16371,0 to (messily) set 80-column 
mode without clearing the screen, and you'll see it.

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Thread

A Peekin and a Pokin... Anthony Ortiz <anthonypaulo@gmail.com> - 2018-02-10 16:48 -0800
  Re: A Peekin and a Pokin... Anthony Lawther <alawther@spammenot.mac.com> - 2018-02-11 13:44 +1000
  Re: A Peekin and a Pokin... Michael J. Mahon <mjmahon@aol.com> - 2018-02-10 21:52 -0600
    Re: A Peekin and a Pokin... Anthony Ortiz <anthonypaulo@gmail.com> - 2018-02-11 07:49 -0800
    Re: A Peekin and a Pokin... michael@apps.guidero.us - 2018-02-11 13:07 -0800
      Re: A Peekin and a Pokin... Anthony Ortiz <anthonypaulo@gmail.com> - 2018-02-11 13:29 -0800
      Re: A Peekin and a Pokin... Antoine Vignau <antoine.vignau@laposte.net> - 2018-02-11 13:50 -0800
        Re: A Peekin and a Pokin... MG <michael@apps.guidero.us> - 2018-02-11 14:58 -0800
  Re: A Peekin and a Pokin... gids.rs@sasktel.net - 2018-02-10 22:56 -0800
  Re: A Peekin and a Pokin... Brian Patrie <bpatrie@bellsouth.spamisicky.net> - 2018-02-12 21:07 -0600
    Re: A Peekin and a Pokin... Anthony Ortiz <anthonypaulo@gmail.com> - 2018-02-14 18:30 -0800
      Re: A Peekin and a Pokin... Brian Patrie <bpatrie@bellsouth.spamisicky.net> - 2018-02-15 00:22 -0600

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