[Coco] Why haven't we got this?!!

Luis Antoniosi (CoCoDemus) retrocanada76 at gmail.com
Thu Jan 23 17:48:40 EST 2014


Native PIC can be made on z-80 as it has relative branches and index
registers but the range is a 8-bit word what make it very limited.
On 2014-01-23 5:33 PM, "Gene Heskett" <gheskett at wdtv.com> wrote:

> On Thursday 23 January 2014 17:30:18 Steve did opine:
>
> > Yes, you can write position Independent Code on a Z-80.  I've not only
> > done it but also wrote object oriented code too.
>
> I must be dumb then, I spent 2 years working on Z80 code for a transmitter
> remote control, wishing I could do that. Not that it would have helped that
> much, it all ran from eproms anyway.
> >
> > My Light Pen and Music software was hidden inside the remark of a basic
> > line of code.  That why you could load and save the drivers with the
> > basic program.  The code not only have to be position Independent, but
> > not include a Zero byte since that would end the line. As I recall, the
> > driver where 2K or more in size. It was tricky programming!
> >
> > Steve
>
> Interesting.
>
> > On 1/23/2014 11:26 AM, Gene Heskett wrote:
> > > On Thursday 23 January 2014 14:25:56 iggybeans at comcast.net did opine:
> > >> Interesting GUI/OS.
> > >> I was never that big of a fan of the Z-80, but I can get the
> > >> processors really cheap. A 16 MHz Z80182 costs me $.40 (yes, I
> > >> stated that correctly, forty cents). And 33 MHz Z8S180 chips are
> > >> also available with a 1mb address range, memory management and DMA.
> > >> So the OS does have more potential than NitrOS-9, if only from an
> > >> available hardware standpoint.
> > >
> > > Can this 40 cent cpu do Position Independent Code?
> >
> > --
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>
>
> Cheers, Gene
> --
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> -Ed Howdershelt (Author)
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>
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> complete probe assembly.
>
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