Yosemite/440EP 'issues' as a PCI target

[Stefan Roese]

Hi David,

On Friday 10 February 2006 19:11, David Hawkins wrote:
> > Just use newer host CPU's! ;-)
>
> Ah, the words of a true engineer :)
>
> Of course the project manager wouldn't appreciate me doing that.
>
> However, its not totally out of the question ... $50 per 21555
> and 20 per crate, thats $1000, about half the price of
> a CPU. But of course, without the I20 unit on the 440EP,
> I might need the 21555 anyway.

Do you really need this I2O unit? You could easily create some message 
ringbuffers, one in the 440EP's SDRAM for the host-to-440 messages and one in 
the host-cpu SDRAM for the 440-to-host messages. This way, all messages will 
be transferred using pci writes.

Best regards,
Stefan