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Re: Getting started with ORCA/M and IIGS programming

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Stephen Heumann <stephen.heumann@gmail.com> writes:
> The ORCA/M I/O macros like puts are using I/O library functions
> supplied with ORCA/M, and in order for those to work right in the
> latest version of ORCA/M, you need to make startup/shutdown calls like
> you noted in the example program.
>
> This isn't documented in the manual because the manual was written for
> a slightly older version of ORCA/M where these calls weren't needed.
> There should be an Asm65816.Notes file in the Release.Notes directory
> of a standard ORCA/M installation, which contains updates to the
> manual including the documentation for these functions.

Thank you so much for pointing this out - you're exactly right. I never
thought to look at the release notes.

>> As if that wasn't enough I started looking for other books on IIGS
>> assembly programming and found that the following code prints something
>> without all the extra calls:
>>
>>                 pea     testmsg|-16
>>                 pea     testmsg
>>                 ldx     #$200c
>>                 jsl     $E10000
>>
>>      testmsg    dc      c'Hello world.',h'00'
>>
>> I understand that this is making a toolbox call to WriteCString and I've
>> also read that it should have probably called TextStartUp ($020c) first.
>> What I'm wondering is why the puts ORCA macro is making me do so much
>> more work than this relatively simple bit of code.
>
> This approach is directly calling the Text Tools, which is part of the
> Apple IIGS Toolbox rather than part of the ORCA libraries.  If you do
> this you don't need to do the ORCA library initialization, but you
> should appropriately start up and shut down the tools you are using.

I've done more reading on the Text Tools and one thing I didn't see was
a way to position text on the 80 column screen. It seems like there
aren't toolbox commands to do this. If I want to create a text based
interface do I have to put values in memory directly if I'm running in
native mode? Thanks!

- James

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Getting started with ORCA/M and IIGS programming James Kruth <james@kruth.org> - 2020-01-18 00:32 -0500
  Re: Getting started with ORCA/M and IIGS programming spectrumdaddy@nospam.com (Ewen) - 2020-01-18 07:51 +0000
    Re: Getting started with ORCA/M and IIGS programming James Kruth <james@kruth.org> - 2020-01-20 01:41 -0500
  Re: Getting started with ORCA/M and IIGS programming Andy McFadden <thefadden@gmail.com> - 2020-01-18 07:42 -0800
    Re: Getting started with ORCA/M and IIGS programming James Kruth <james@kruth.org> - 2020-01-20 01:44 -0500
  Re: Getting started with ORCA/M and IIGS programming Stephen Heumann <stephen.heumann@gmail.com> - 2020-01-18 11:01 -0600
    Re: Getting started with ORCA/M and IIGS programming James Kruth <james@kruth.org> - 2020-01-20 02:11 -0500
      Re: Getting started with ORCA/M and IIGS programming spectrumdaddy@nospam.com (Ewen) - 2020-01-20 07:45 +0000
      Re: Getting started with ORCA/M and IIGS programming kelvin@pro-kegs.uucp (Kelvin Sherlock) - 2020-01-20 23:21 -0500
        Re: Getting started with ORCA/M and IIGS programming James Kruth <james@kruth.org> - 2020-01-26 00:25 -0500

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