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Re: [f-cpu] Use of VCI for F-CPU core

On Thu, Jan 17, 2002 at 10:43:44PM +0100, Yann Guidon [systeme] wrote:
> The VCI interface protocol is defined by the VSI Alliance (vsi.org).
> I am investigating whether it can be used in the frame
> of F-CPU. Why not Wishbone ? Could be, but VCI
> is very simple and does not define a bus or whatever, just the interface.
> Exactly what is needed to define a core, without caring for the fine prints
> of the reference manuals.  I like VCI to the same point i dislike PCI.

It has its quirks, though. An asynchronous VAL/ACK cycle seems to be
pretty unreliable -- you never know whether the ACK arrives in time --,
while synchronous handshakes are slow (2 cycles per cell).

 Michael "Tired" Riepe <Michael.Riepe@stud.uni-hannover.de>
 "All I wanna do is have a little fun before I die"
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