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Date: Sat, 22 Aug 2009 12:10:26 +0400 (MSD)
From: malc <av1474@comtv.ru>
Subject: Re: [Qemu-devel] Disable gus audio device in isapc
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To: =?ISO-2022-JP?B?GyRCSXBFRBsoQg==?= =?ISO-2022-JP?B?IBskQj1TTGkbKEI=?= <t-takeda@m1.interq.or.jp>
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On Sat, 22 Aug 2009, =C9=F0=C5=C4 =BD=D3=CC=E9 wrote:

> Hi members,
>=20
> Both isa ne2k nic and gus audio device uses the ioport 0x300
> and it causes isa pc crash issue.
>=20
> This is the patch to disable gus in the isa pc case.
>=20
> --- pc.orig=09Thu Aug 20 11:13:30 2009
> +++ pc.c=09Sat Aug 22 11:19:02 2009
> @@ -762,6 +762,10 @@
>          if (s) {
>              for (c =3D soundhw; c->name; ++c) {
>                  if (c->enabled) {
> +                    if (!pci_bus && strcmp(c->name, "gus") =3D=3D 0) {
> +                        fprintf(stderr, "qemu: disable Gravis Ultrasound=
 GF1 for isapc\n");
> +                        continue;
> +                    }
>                      if (c->isa) {
>                          c->init.init_isa (s, pic);
>                      }
>=20

That's the nature of ISA and this hack is hardly sufficient, for instance
gus and cs4231a occupy the same DMA, something more apt is required to
handle the conflicts in I/O space for ISA cards.

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