Date   : Sun, 05 Mar 2006 00:33:31 +0100
From   : John Kortink <kortink@...>
Subject: Re: Warning: Sad case on list!

On Sat, 04 Mar 2006 22:58:00 +0000, mogwai wrote:

>Howdy John!
>
>John Kortink wrote:
>
>> I have one of Sprow's ARM 2p, highly recommended, an
>> excellent development.
>
>Indeed. I'm giving it very carefull consideration. Have to see if I have
>an available universal cheese wedge too. It looks a great box.

It's fantastic. And you gotta love its potential (whatever
may actually be realised ...).

>> There's also the 'impure' GoMMC, the perhaps perfect
>> companion to the ARM 2p. And probably more impurity
>> to be found in backwaters on the net.
>
>Oh my yes.. You've used one of those?

Well, I'm bound to, since I created it. ;-)

>Its memory footprint is just the same as a 27128 yes?

Yes.

>No flying wires?

Not required, no. More details on my website.

>> For speed, yes. Simplicity hardly. A 6502 core is large
>> and putting one in the FPGA is hardly a trivial task. To
>> say nothing of putting in others.
>
>A 6502 core (actually a couple of them) are floating around open source.

I know. But it's rather costly in terms of FPGA real estate.
The FPGAs that can handle it all will be expensive.

>> Emulation will leave enough speed for a few factors of
>> speed increase, compared to the real 2p. And it's more
>> flexible.
>
>Agreed.. There should be No problem for the ARM chip to emulate any of
>the 8/16 bit processors at either standard, fast, or
>absolutely-bloomin'-ludicrous-guv speeds.

Well, it won't be that spectacular at 64 MHz div something
like 5-20. But compared to the old 2ps a decent speedup
should be obtainable.


John Kortink

-- 

Email    : kortink@...         
Homepage : http://www.inter.nl.net/users/J.Kortink

GoMMC, the ultimate BBC B/B+/Master storage system :
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