Shared Interrupt Mechanism; Configuring Pci Multiport Rs232 Cards; Installing A Pci Multiport Card - Brainboxes CC-313 Manual

Specifications

Shared Interrupt Mechanism.

The shared interrupt mechanism is a way of using the
single interrupt line available to the PCI card efficiently. It allows
the serial ports on the PCI Multiport Card to share only one IRQ
line. Latching of the first asserted interrupt and a priority encoding
system which queues any subsequent interrupts, allows the driver
software to service the ports in an intelligent and orderly manner.
This prevents one port dominating the interrupt line at the expense
of other ports.

Configuring PCI Multiport RS232 Cards.

The PCI Quad and Lynx cards are fully "plug and play",
and require no hardware configuration. They can be installed
"directly from the box".

Installing A PCI Multiport Card.

STEP 1: Turn the PC off, remove the plug from its socket and
detach all PC peripherals - mouse, keyboard etc.
STEP 2: Remove the case.
Step 3 - Remove Blanking Cover.
Chapter 2 Page 8
PCI Quad / Lynx 8 Port RS232
Choose an empty PCI expansion slot.
Remove the blanking cover protecting the
slot on the PC back panel. KEEP the
blanking cover screw safely for later.