Groups > comp.sys.apple2.programmer > #6018

Re: accessing auxillary memory language card memroy area

From	Brian Patrie <bpatrie@bellsouth.spamisicky.net>
Newsgroups	comp.sys.apple2.programmer
Subject	Re: accessing auxillary memory language card memroy area
Date	2023-03-21 03:43 -0500
Organization	an elaborate system of piles and accidents
Message-ID	<tvbqnl$1hso$1@dont-email.me> (permalink)
References	<9901987c-b0e7-4da8-af2a-44b5b6d25fd4n@googlegroups.com>

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woodsworth1 wrote:
> I've looked through the aplle //e technical reference manual (1987) for answers but I can't find any. It talks about the soft switches for the lower 48K of the auxillary memory but I'm trying to learn how to access the top 16K (language card area)  of auxillary memory on a 128K apple //e. There is a picture on page 87 that describes that memory as being banked like the main memory language card space, but its not clear to me how you would read or write that memory space. Can someone explain?
> 
> thanks!
> jp

If you just want to move stuff in and out of it, there is the AUXMOVE 
subroutine at $C311.  I think it works for the whole 64k.

It uses the same zp registers as the System Monitor MOVE subroutine for 
source range and target address, and the carry flag to choose direction 
(SEC to copy to auxmem; CLC to copy from auxmem).

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accessing auxillary memory language card memroy area woodsworth1 <woodsworth1@gmail.com> - 2023-03-17 18:01 -0700
  Re: accessing auxillary memory language card memroy area qkumba <peter.ferrie@gmail.com> - 2023-03-17 19:37 -0700
    Re: accessing auxillary memory language card memroy area woodsworth1 <woodsworth1@gmail.com> - 2023-03-17 21:48 -0700
      Re: accessing auxillary memory language card memroy area Antoine Vignau <ntn.vignau@gmail.com> - 2023-03-20 06:12 -0700
  Re: accessing auxillary memory language card memroy area Brian Patrie <bpatrie@bellsouth.spamisicky.net> - 2023-03-21 03:43 -0500
  Re: accessing auxillary memory language card memroy area Michael Pohoreski <michael.pohoreski@gmail.com> - 2023-03-21 07:45 -0700
  Re: accessing auxillary memory language card memroy area Michael Pohoreski <michael.pohoreski@gmail.com> - 2023-03-21 08:47 -0700

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