EISA/PCI bridge is uni-directional?

["Daniele Beccari" <daniele@petrus.grenoble.hp.com>]

Hi,

I have a question about bridging EISA and PCI, (and I probably already know
the answer).

Here is the point:

- An EISA/PCI bridge can be used to add an EISA extension to a "system" PCI
  bus:

  Host bus -- Host/PCI bridge -- PCI Bus -- EISA/PCI bridge -- EISA bus


- What if I wanted to have a PCI bus beyond a "system" EISA bus? 

  Host-bus -- Host/EISA bridge -- EISA bus -- EISA/PCI bridge -- PCI bus

This is ignoring all performance issues (it would make no sense), but could
be 
needed to plug NEW PCI devices on OLD EISA systems.

The question is: Do exisiting EISA/PCI bridges allow to do that?
As far as my knowledge of bridges goes, the answer is: no.

I would appreciate a confirmation from the list, before closing this issue.

Thank you in advance,

		
					Daniele



--
daniele@petrus.grenoble.hp.com


kH7