Re: "Co-Processor" Apple ?

["Robert C." <robc638killspam@sympatico.ca>]

"Michael J. Mahon" <mjmahon@aol.com> wrote in message
20040817220555.19157.00003638@mb-m06.aol.com">news:20040817220555.19157.00003638@mb-m06.aol.com...
> Robert C. replied:
>
> >"Michael J. Mahon" <mjmahon@aol.com> wrote in message
> >
> >> All these issues caused me to prefer using an annunciator output
> >> and a pushbutton input for NadaNet--it is both simpler and more
> >> capable.
> >
> >The more I read about NadaNet, the more I think it is "the next best
thing"
> >to true Ethernet.
>
> I'm glad you like what you've read.  ;-)
>
> The practical bandwidth is about 8 kilobytes/sec, which is a lot
> lower than the peak bandwidth of Ethernet, but the latency is
> very low and Apple II's don't need screaming bandwidth.
>
> NadaNet delivers data at about the same rate as a 5.25" disk,
> which is quite practical for many purposes.
>
> And you can't beat the price...  ;-)
>
> I've just written a Applesoft program "prun" which will do a
> "parallel run" of any Applesoft program on all networked
> machines running the service loop.  The slaves complete
> their computation and return to the service loop by doing
> any input operation.
>
> I've been pretty busy reorganizing my lab area for the last
> few weeks, and expect that to go on for another few weeks,
> but my next NadaNet project is assembling the code to
> run at the top of RAM (at $B800 for AppleCrate slaves),
> so that HIMEM: can easily protect it, and all of low memory
> will be contiguous for program(s).
>
> I'll give some thought to self-relocation in the process...
>
> -michael
>
> Check out parallel computing for 8-bit Apples on my
> Home page:  http://members.aol.com/MJMahon/

I have downloaded and read the documentation and code and am in the process
of entering the code one byte at at time. I know the files are available for
download too, but I figured: what better way to learn the code than to enter
it manually. I will be using my 2 Apples as a "Master" / "Slave" setup, so I
was wondering, is there any parts of the code that should be changed? The
Applesoft program you wrote can be easily changed so that it does not use
"machine 2" as a message center, and the Slave polls the Master upon
completion of its job.

~Robert~