On Mon, 26 Jan 2009 10:42:29 +0100 Takashi Iwai <tiwai@xxxxxxx> wrote: > At Sun, 25 Jan 2009 23:05:55 +0100, > Rene Herman wrote: > > > > On 25-01-09 21:10, Krzysztof Helt wrote: > > > > > From: Krzysztof Helt <krzysztof.h1@xxxxx> > > > > > > The ess1688 driver uses the same port > > > for PCM audio (SB compatible) and OPL3 > > > synthesis. It is wrong so allow to > > > choose a correct port for OPL3 synthesis. > > > > Only a very quick reply -- generally, the low 2 SB ports are indeed OPL3 > > compatible (or was it just OPL2? ...) > > All devices have separate OPL3 I/O ports. So there must be a > reason... > The ESS 688 datasheet states that FM chip select signal (FMCSB) is activated when one of the port ranges: 388H-389H, 2x8H-2x9H, 2x0H-2x3H is selected. The current code may work on on the ESS 688. However, it obviously does not work with the ESS 1688 (bug #282). The bug report states that the OPL3 synthesis works with the OSS driver which chooses the 0x388 port for the OPL3. My patch adds a new port setting so it is still possible to set the fm_port value the same as the port value. No change here. However, it allows setting different values to the port and the fm_port setting if needed. Takashi, please consider applying my patch to the alsa tree. Regards, Krzysztof ---------------------------------------------------------------------- Speak Up. Angielski szybko i skutecznie. 3 miesiace nauki gratis. Sprawdz. >> http://link.interia.pl/f2019 _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
