Installation manual

Technical information
27
❑ Make sure your extended memory manager, the file
EMM386.EXE, is updated for PCI. Search for the file on
your hard drive, and make sure the date is at least 5/31/94.
❑ Configure the slot for level-triggered interrupts. The slot
the adapter is using must be configured for level-triggered
interrupts rather than edge-triggered interrupts. Check
your PCI BIOS Setup program.
Table 8 shows some example PCI BIOS Setup program
parameters.
The exact wording of these parameters varies with different
computers.
Fast Ethernet hubs
New hubs are becoming available to support a variety of Fast
Ethernet LAN configurations. These hubs can be divided into
two basic types: shared and switched. The AT-2560FX 100 PCI
requires a 100 Mbps capable hub set to 100 Mbps. AT-2560TX 10/
100 PCI can be used with hubs capable of 10 Mbps operation, 100
Mbps operation, or both.
Shared hubs. In a shared network environment, computers are
connected to hubs called repeaters. All ports of the repeater hub
share a fixed amount of bandwidth, or data capacity. A 100 Mbps
Table 8: Example PCI BIOS Parameters
PCI slot #: Slot where the adapter is installed (1-3)
Master: ENABLED
Slave: ENABLED
Latency timer: 40
Interrupt: Choose any one of several that the BIOS Setup provides.
Edge-level: Level