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Re: Dual 65C816/65C02 programs

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On 7/15/2013 5:34 PM, D Finnigan wrote:
> Egan Ford wrote:
>> On 7/13/13 9:35 PM, D Finnigan wrote:
>>> Thinking about Universal Mach-O binaries on OS X which could have PPC,
>>> i386,
>>> and x86_64 code got me wondering whether anyone has ever written a
>>> program
>>> that will run on the 6502 or 65C02, but will also get enhanced 16-bit
>>> instructions when run on the IIgs.
>>>
>>> I know there are some assemblers that will run on both CPUs, even the
>>> 65802,
>>> but how many other programs have been written this way?
>>>
>>> Is it possible to have one program binary that will run under ProDOS 8 on
>>> the IIe and ProDOS 16 on the IIgs?
>>>
>>
>> I can think of one reason why you wouldn't want to do that--code size.
>> The code segment would most likely take 2x RAM.
>
> Good point; I hadn't considered that.
>
> What about this: a stub program that detects the current operating system,
> then seeks in the file to load the correct code into RAM?
>
> Now I know why we don't do this: operating system support is a must!
>

Maybe I'm misunderstanding but I believe ProDOS 8 can load 65816 code 
and run it on a IIgs.  In fact I don't see why DOS 3.3 couldn't.  Of 
course it would have to be in a recognized file format (binary).

Anyway, I believe Sneeze V2.2 (a program launcher & file utility) by 
Karl Bunker is an example of a ProDOS 8 program that runs both 65c02 and 
65c816 code (when it is needed) depending on whether it is running on a 
//e or a IIgs.

Charlie

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Thread

Dual 65C816/65C02 programs D Finnigan <dog_cow@macgui.com> - 2013-07-14 02:35 +0000
  Re: Dual 65C816/65C02 programs Egan Ford <datajerk@gmail.com> - 2013-07-14 21:35 -0500
    Re: Dual 65C816/65C02 programs D Finnigan <dog_cow@macgui.com> - 2013-07-15 21:34 +0000
      Re: Dual 65C816/65C02 programs Charlie <charlieDOTd@verEYEzon.net> - 2013-07-15 20:47 -0400
      Re: Dual 65C816/65C02 programs gbody4@bigpond.com - 2013-07-15 18:52 -0700
        Re: Dual 65C816/65C02 programs Dagen Brock <DagenBrock@gmail.com> - 2013-07-19 07:49 -0700
          Re: Dual 65C816/65C02 programs Egan Ford <datajerk@gmail.com> - 2013-07-19 10:55 -0600
            Re: Dual 65C816/65C02 programs Dagen Brock <DagenBrock@gmail.com> - 2013-07-19 13:21 -0700
              Re: Dual 65C816/65C02 programs Egan Ford <datajerk@gmail.com> - 2013-07-20 11:52 -0600
                Re: Dual 65C816/65C02 programs D Finnigan <dog_cow@macgui.com> - 2013-07-20 22:47 +0000
                Re: Dual 65C816/65C02 programs Egan Ford <datajerk@gmail.com> - 2013-07-21 11:19 -0600
                Re: Dual 65C816/65C02 programs D Finnigan <dog_cow@macgui.com> - 2013-07-21 17:35 +0000
                Re: Dual 65C816/65C02 programs gids.rs@sasktel.net - 2013-07-25 08:25 -0700
                Re: Dual 65C816/65C02 programs Egan Ford <datajerk@gmail.com> - 2013-07-27 15:04 -0600

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