RE: SERIRQ on PCI-connectror

["Frank Story" <frank.story@acoustictech.com>]

Hi Alexander,

SERIRQ was a serial interrupt signal proposal to the PCI SIG from a number of years ago. The idea was to support ISA legacy interrupts to PCI cards over a PCI connector pin rather than having to implement a sideband cable to the motherboard. A number of cards (such as audio cards) had to support both standard PCI operation and legacy modes of operation, particularly with regards to interrupt and DMA channels. To my knowledge, the SERIRQ proposal was never accepted and so the signal/pin is not in any version of the PCI spec.

Regards,
Frank


-----Original Message-----
From: Bichler, Alexander [mailto:alb@msc-ge.com]
Sent: Tuesday, May 21, 2002 2:40 AM
To: 'pci-sig@znyx.com'
Subject: SERIRQ on PCI-connectror


Dear PCI-experts,

related to the PCI-Bus the Signal 'SERIRQ' appeared. Unfortunately I have
only the Version 2.2, but I guess, this signal is used since
PCI-Specification 2.3. 
Is this correct and which is pin number on the PCI-connector for this
signal?

regards
Alexander Bichler