Date: Sun, 17 Jan 1999 20:38:08 +0100 (MET) From: Luigi Rizzo <luigi@labinfo.iet.unipi.it> To: andreas@klemm.gtn.com (Andreas Klemm) Cc: freebsd-multimedia@FreeBSD.ORG Subject: Re: technical requirements to run 2 soundcards in one PC Message-ID: <199901171938.UAA04912@labinfo.iet.unipi.it> In-Reply-To: <19990117220625.A26582@titan.klemm.gtn.com> from "Andreas Klemm" at Jan 17, 99 10:06:06 pm
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> Hi ! > > This is a general, not necessaryly FreeBSD related question. ... > ourselves, if we got perhaps out of DMA channels. ... > Both cards run in full duplex mode ... So, do they need 2 or 4 > DMA channels ? > > Well, just need some technical background, how it would be > possible to drive 2 ISA soundcards in one PeeCee. it all depends on how good is your driver etc. etc. -- yes, you might run out of DMA channels in some cases. Me, i have had 3 ISA cards working together, two using full duplex and one half duplex (the latter using only one channel). This was with the "pcm" driver on FreeBSD. cheers luigi > > Thanks > > Andreas /// > > -- > Andreas Klemm http://www.FreeBSD.ORG/~andreas > What gives you 90% more speed, for example, in kernel compilation ? > http://www.FreeBSD.ORG/~fsmp/SMP/akgraph-a/graph1.html > "NT = Not Today" (Maggie Biggs) ``powered by FreeBSD SMP'' > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-multimedia" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-multimedia" in the body of the message
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