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GEOS managed to offer nearly all the functionality of the original Mac in a 1 MHz computer with 64 Kilobytes of RAM.

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  GEOS managed to offer nearly all the functionality of the original Mac in a 1 MHz computer with 64 Kilobytes of RAM. polymorph self <jackvanc3@gmail.com> - 2016-10-20 14:55 -0700
    Re: GEOS managed to offer nearly all the functionality of the original Mac in a 1 MHz computer with 64 Kilobytes of RAM. polymorph self <jackvanc3@gmail.com> - 2016-10-20 15:10 -0700
      Re: GEOS managed to offer nearly all the functionality of the original Mac in a 1 MHz computer with 64 Kilobytes of RAM. polymorph self <jackvanc3@gmail.com> - 2016-10-20 15:10 -0700
    GEOS managed to offer nearly all the functionality of the original Mac in a 1 MHz computer with 64 Kilobytes of RAM. clozaga@gmail.com - 2016-10-20 20:58 -0700
      Re: GEOS managed to offer nearly all the functionality of the original Mac in a 1 MHz computer with 64 Kilobytes of RAM. Paul Rubin <no.email@nospam.invalid> - 2016-10-20 22:35 -0700
        Re: GEOS managed to offer nearly all the functionality of the original Mac in a 1 MHz computer with 64 Kilobytes of RAM. Roelf Toxopeus <rt4all@nothishetnet.nl> - 2016-10-23 01:36 +0200
        Re: GEOS managed to offer nearly all the functionality of the original Mac in a 1 MHz computer with 64 Kilobytes of RAM. hughaguilar96@gmail.com - 2016-10-22 21:32 -0700
      Re: GEOS managed to offer nearly all the functionality of the originalMac in a 1 MHz computer with 64 Kilobytes of RAM. "HAA" <someone@microsoft.com> - 2016-10-22 19:08 +1000

#52065 — GEOS managed to offer nearly all the functionality of the original Mac in a 1 MHz computer with 64 Kilobytes of RAM.

http://mobile.osnews.com/story.php/15223/GEOS_The_Graphical_Environment_Operating_System

can forth do better?

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#52068

On Thursday, October 20, 2016 at 5:55:56 PM UTC-4, polymorph self wrote:
> http://mobile.osnews.com/story.php/15223/GEOS_The_Graphical_Environment_Operating_System
> 
> can forth do better?

https://en.wikipedia.org/wiki/Commodore_Plus/4

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#52069

On Thursday, October 20, 2016 at 6:10:06 PM UTC-4, polymorph self wrote:
> On Thursday, October 20, 2016 at 5:55:56 PM UTC-4, polymorph self wrote:
> > http://mobile.osnews.com/story.php/15223/GEOS_The_Graphical_Environment_Operating_System
> > 
> > can forth do better?
> 
> https://en.wikipedia.org/wiki/Commodore_Plus/4

https://en.wikipedia.org/wiki/Chuck_Peddle

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#52078

Forth generates very compact threaded code it could be ideal for a 64k machine in that regard. However it may not be as performing as assembler, which much of GEOS depended on.

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#52081

clozaga@gmail.com writes:
> Forth generates very compact threaded code it could be ideal for a 64k
> machine in that regard. However it may not be as performing as
> assembler, which much of GEOS depended on.

I expect most Forth systems of that era relied on asm code for the speed
sensitive parts.  The Canon Cat code was posted here not that long ago.
It was mostly in Forth but had a fair amount of Z80(iirc) assembly code.

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#52120

On 21/10/2016 07:35, Paul Rubin wrote:
> clozaga@gmail.com writes:
>> Forth generates very compact threaded code it could be ideal for a 64k
>> machine in that regard. However it may not be as performing as
>> assembler, which much of GEOS depended on.
>
> I expect most Forth systems of that era relied on asm code for the speed
> sensitive parts.  The Canon Cat code was posted here not that long ago.
> It was mostly in Forth but had a fair amount of Z80(iirc) assembly code.
>

Sorry nitpicking:
Canon Cat = Motorola 68000
Jupiter Ace = Z80

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#52124

On Thursday, October 20, 2016 at 10:35:54 PM UTC-7, Paul Rubin wrote:
> clozaga@gmail.com writes:
> > Forth generates very compact threaded code it could be ideal for a 64k
> > machine in that regard. However it may not be as performing as
> > assembler, which much of GEOS depended on.
> 
> I expect most Forth systems of that era relied on asm code for the speed
> sensitive parts.  The Canon Cat code was posted here not that long ago.
> It was mostly in Forth but had a fair amount of Z80(iirc) assembly code.

The Canon Cat was for the MC68000.

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#52108 — Re: GEOS managed to offer nearly all the functionality of the originalMac in a 1 MHz computer with 64 Kilobytes of RAM.

clozaga@gmail.com wrote:
> Forth generates very compact threaded code it could be ideal for a 64k machine in that
> regard. However it may not be as performing as assembler, which much of GEOS depended
> on.

Speed aside, simple functions can be more compact in assembler than
threaded Forth.  A good number of bytes can be shaved from a Forth
kernel applying such a strategy.  In practice the C64 had much less
memory available to programs than 64K.  At the end of the day it was
just a games machine (as was the Amiga).

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