Specifications

Escala Tower PL & S, E, T System Hardware
Chapter 2: Models Description 30/94
9es3s1c2.doc
Rev 5.9
02/12/2003
PCI Bus Implementation Details
The Escala E Series PCI bus is implemented by means of a Bull developed ASIC called the PMC (PCI
and Memory Controller). On the PCI side this ASIC is a PowerPC 6xx bus to PCI channel bridge with
the PCI bus being implemented as a 64-bit channel running at 33 MHz and being compliant with the
PCI bus specification.
To add additional PCI slots to the Escala E Series Planar Board it is necessary to connect a system
extender card. The 2 standard PCI extenders are described in the following paragraph.
6.2.2. The System Extender Cards
As previously mentioned it is possible to extend the PCI and incidentally also the ISA I/O slot
capacities of the Escala E Series Planar Board, by the use of dedicated extender cards.
The PCI Entry Extender Card
ISA
PCI Entry Extender Card
PCI
64 bit
The PCI Entry Extender Card adds an additional 2 x 64-bit PCI slots and an extra 2 x ISA slots to the
existing single 64-bit PCI slot included on the Escala E Series Planar Board.