Wuntronic PCI4DRQ Guide de l'utilisateur télécharger pdf (Page 42)

MAGMA

34 Appendix B Need More Slots?

The following image shows the Apple Profiler display when a MAC has

2 Expansion Systems connected in a “Fan-Out” configuration

MAC System Profiler with 2 PCI to PCI Expansion Systems Installed

in a “Fan-Out Configuration.

Daisy-Chaining

Recognizing the typical insignificance of the performance variance

between the “Fan-Out” and “Daisy-Chaining” configurations, the primary

reason for using this one would be limitations on physical space. This

could be the number of available slots on the computer motherboard, or

a lack of desk or rack space.

In the daisy-chain configuration, successive PCI expansion systems are

added to the "end" of the PCI bus hierarchy, which adds "depth" to the

PCI Local Bus by increasing the number of PCI Local Bus levels active

in the system configuration.

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Wuntronic PCI4DRQ Guide de l'utilisateur Page 42