Mesa 4I71, Руководство пользователя

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4I71 2
HARDWARE CONFIGURATION
GENERAL
Hardware setup jumper positions assume that the 4I71 card is oriented in an upright
position, that is, with the PC/104 connectors towards the person doing the configuration,
and the on card writing right-side-up.
PC104-PLUS SLOT NUMBER
The 4I71 card must be assigned a slot number before use. In desktop PCI systems,
the slot number is determined by the physical slot that the PCI card is inserted into. In
PC104-PLUS systems, all signals on the bus are the same for each card, so a method is
needed to differentiate each card. This is done with the slot number jumpers on the 4I71
card. 2 jumpers. W2 and W3 determine the 4I71 slot assignment. The following table
shown the jumper settings:
W2 W3 SLOT IRQ REQ/GNT NOTES
DOWN DOWN 0 A 0 DEFAULT
DOWN UP 1 B 1
UP DOWN 2 C 2
UP UP 3 D 3
MDIX ENABLE/DISABLE
The 8 Ethernet ports of the 4I71 support Auto MDI-X. When Auto MDI-X is enabled,
each Ethernet port automatically detects whether a crossover connection is required and
switches the ports transmit and receive pairs as needed. Sometimes this auto-switching
can interfere with proper operation of other connected hubs or switches so it can be
disabled. W4 controls the MDIX feature. When W4 is in the right hand position (default),
Auto MDI-X is enabled. When W4 is in the left hand position, Auto MDI-X is disabled.
ETHERNET ADDRESS
The hexadecimal MAC address is printed on a label on the front edge of the PC/104
connector of the 4I71 card.
PORTS
Seven of the 8 Ethernet ports on the 4I71 connect to the 8 port switch, Port 1
connects to the KSZ8842's , while Ports 2 through 8 connect to switch ports 2 through 8.