Date: Mon, 30 Nov 1998 15:59:38 +0100 (MET) From: Luigi Rizzo <luigi@labinfo.iet.unipi.it> To: richard@cogsci.ed.ac.uk (Richard Tobin) Cc: multimedia@FreeBSD.ORG Subject: Re: Yamaha PCI sound card Message-ID: <199811301459.PAA16545@labinfo.iet.unipi.it> In-Reply-To: <18913.199811301445@doyle.cogsci.ed.ac.uk> from "Richard Tobin" at Nov 30, 98 02:45:11 pm
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> I have a Yamaha Waveforce 192XG PCI suondcard. This uses the Yamaha > YMF724 chip. > > I wrote a trivial driver that does nothing more than enable "legacy > audio" (ie SBPro and MPU401) compatibility mode. This allows the > FreeBSD sound drivers (old voxware or Luigi's) to recognise the card, > but it doesn't make it work - it just hangs (interruptibly) when I use > /dev/audio, and produces no sound when the midi device is used. no sound means probably the dma is not initialized properly. > interrupts and DMA. The chip purports to support plain IRQs (and > it's in that mode), and has two modes of ISA DMA compatibility: PC/PCI > (which seems to require motherboard support - you connect a cable from > the card to a socket which my motherboard doesn't have) and > Distributed DMA (D-DMA). > > I don't really understand this stuff; can anyone give me some pointers? nor do I, sorry :( i still hope to be able to find adequate specs on the card -- the YMF724 has 64 hardware channels with mixing and rate conversions, and costs, an AC97 codec (MSS compatible) and costs nothing (the cart i got is about US$35) Richard, why don't you try to give a phone call to Yamaha Europe (the UK branch) ? The US and Japan branches do not support "International customers", and the other ones have a fax number which seems to eb a bit-bucket (no response from them so far). cheers luigi -----------------------------+-------------------------------------- Luigi Rizzo | Dip. di Ingegneria dell'Informazione email: luigi@iet.unipi.it | Universita' di Pisa tel: +39-50-568533 | via Diotisalvi 2, 56126 PISA (Italy) fax: +39-50-568522 | http://www.iet.unipi.it/~luigi/ _____________________________|______________________________________ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-multimedia" in the body of the message
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