It's odd that MicroDigital go on about the 80331. It seems that they're trying to justify thaeir claims that there's a great deal more bandwidth to be had from the StrongARM bus - and maybe there is, but the bottom line is that the 80321 is simply a much faster processor, and coupled with the also much faster memory bus in the Iyonix, there's simply no way the Omega can approach how fast the Iyonix - as Steffen has previously pointed out.
As for the 80331 itself, it's completely different to the StrongARM - and indeed, it's very different to the 80321 it's meant to replace. From a commercial viewpoint, the 80331 doesn't even exist (such lead times are common with chip manufacturers), so we're well into the vapourware category.
Certainly, the 80321 does have many bus issues, which the 80331 resolves, but the 321 was most assurdely the right choice at the right time for the Iyonix. Had Castle decided to go down the pluggable processor option, it would have taken much longer, and been rather more expensive, and added to the design complexity. It's easy to demonstrate that there would have been no cost saving for upgraders with this option. As such, it was expected that a new motherboard would be needed should there ever be an Iyonix II, and with that, it would be able to take proper advantages of the totally redesigned bus arrangement in the 331.
As for the questionable claims from MD about benchmarks, I can only repeat what Chris has said - the benchmarks they quote test only a limited subset of activities. As we've already seen, in previous more comprehensive benchmarks, the Iyonix _is_ ~3 times faster than a 200Mhz SARPC in general, and for some operations much more.
What I would like to see is Dave address some of the points I've made. This isn't the first time he's made a general response, and essentially avoided the points I've made.
EeePCs and RPCEmu at ROUGOL Monday night was curry and beer night London RISC OS users in Borough High Street, where Keith Dunlop and Bryan Hogan demonstrated RPCEmu on a little eeePC. 34 comments, latest by rjek on 21/11/08 9:32AM. Published: 17 Nov 2008