Date: Tue, 21 Mar 95 9:38:31 MST From: terry@cs.weber.edu (Terry Lambert) To: bde@zeta.org.au (Bruce Evans) Cc: bde@zeta.org.au, current@FreeBSD.org, se@MI.Uni-Koeln.DE Subject: Re: Sharing interrupts with PCI devices? Message-ID: <9503211638.AA06839@cs.weber.edu> In-Reply-To: <199503211525.BAA19070@godzilla.zeta.org.au> from "Bruce Evans" at Mar 22, 95 01:25:09 am
next in thread | previous in thread | raw e-mail | index | archive | help
> One or two here, one or two there ... I'm > looking at a cyclades intelligent serial > board and driver that is 25% slower than > an unintelligent 16450 board and 3 times > slower than an unintelligent 16550 board. > Perhaps it would be faster if cycles weren't > wasted here and there. [ ... ] > I think there should be separate interrupt > registration and dispatch, etc. for different > classes of interrupts. I can save a few usec > in the ISA handlers if they spec'ed to not > support level triggered interrupts. I agree with Bruce, but then I'm a computational nanosecond kinda guy from my Commodore 64 raster interrupt days... Terry Lambert terry@cs.weber.edu --- Any opinions in this posting are my own and not those of my present or previous employers.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?9503211638.AA06839>