[rescue] SBus vs. PCI

[Gregory Leblanc]

On Fri, 2002-02-22 at 23:41, Dave McGuire wrote:
> On February 22, Gregory Leblanc wrote:
> > Technical reason?  I'll be damned if I've ever heard one.  Some people
> > just don't like moving forward.  Hmm, let's see.  
> > SBUS was Developed by Sun, is IEEE P1496, and goes up to 64-bit, 25MHz =
> > 200MegaBytes/sec (standard is only 32-bit/25MHz)
> > PCI was Developed by Intel, isn't a stanrard, and goes up to 64-bit,
> > 66MHz = 528MegaBytes/sec. 
> 
>   The very first PCI Suns do 64-bit 66MHz PCI?

No, and I didn't claim that.  But I've got one of the newest sbus based
suns, and it doesn't do 64-bit Sbus.  And PCI suns have been doing 64-66
for what, 4 years now.

>   There are other issues here...Sbus can initiate a new transfer

Agreed, there are.  

> immediately following a completed one, whereas PCI takes several for
> setup.  There are a few others but I don't recall the details offhand.

Cool.  There's one detail.  Now to find some more...
	Greg

-- 
Portland, Oregon, USA.