I/O Expansion Slots - NEC NEAX Express Service & Reference Manual

I/O Expansion Slots

The server's expansion capabilities meet the needs of file and application servers for
high performance I/O by providing a combination of PCI local bus and ISA connectors.
The system board has one full-length ISA bus connector.
The ISA features include:
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Bus speed up to 8.33 MHz
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16-bit memory addressing
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Type A transfers at 5.33 Mbps
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Type B transfers at 8 Mbps
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8- or 16-bit data transfers
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Plug and Play ready.
The system board has four full-length PCI (PCI-33/32 bit) connectors.
The PCI features include:
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Bus speed up to 33 MHz
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32-bit memory addressing
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5 V signaling environment
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Burst transfers of up to 133 Mbps
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8-, 16-, or 32-bit data transfers
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Plug and Play ready
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Parity enabled.
The system board has two full-length PCI-66 universal connectors.
The PCI features include:
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Bus speed up to 66 MHz
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32-bit memory addressing
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5 V/3.3 V signaling environment
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Burst transfers of up to 266 Mbps
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8-, 16-, or 32-bit data transfers
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Plug and Play ready
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Parity enabled.
Note: If a PCI-33 card is installed into one of the PCI-66 slots,
the bus speed for both PCI-66 slots will be lowered to 33 MHz.
1-10 System Overview