From 849369d6c66d3054688672f97d31fceb8e8230fb Mon Sep 17 00:00:00 2001 From: root Date: Fri, 25 Dec 2015 04:40:36 +0000 Subject: initial_commit --- Documentation/sound/oss/PSS | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 Documentation/sound/oss/PSS (limited to 'Documentation/sound/oss/PSS') diff --git a/Documentation/sound/oss/PSS b/Documentation/sound/oss/PSS new file mode 100644 index 00000000..187b9525 --- /dev/null +++ b/Documentation/sound/oss/PSS @@ -0,0 +1,41 @@ +The PSS cards and other ECHO based cards provide an onboard DSP with +downloadable programs and also has an AD1848 "Microsoft Sound System" +device. The PSS driver enables MSS and MPU401 modes of the card. SB +is not enabled since it doesn't work concurrently with MSS. + +If you build this driver as a module then the driver takes the following +parameters + +pss_io. The I/O base the PSS card is configured at (normally 0x220 + or 0x240) + +mss_io The base address of the Microsoft Sound System interface. + This is normally 0x530, but may be 0x604 or other addresses. + +mss_irq The interrupt assigned to the Microsoft Sound System + emulation. IRQ's 3,5,7,9,10,11 and 12 are available. If you + get IRQ errors be sure to check the interrupt is set to + "ISA/Legacy" in the BIOS on modern machines. + +mss_dma The DMA channel used by the Microsoft Sound System. + This can be 0, 1, or 3. DMA 0 is not available on older + machines and will cause a crash on them. + +mpu_io The MPU emulation base address. This sets the base of the + synthesizer. It is typically 0x330 but can be altered. + +mpu_irq The interrupt to use for the synthesizer. It must differ + from the IRQ used by the Microsoft Sound System port. + + +The mpu_io/mpu_irq fields are optional. If they are not specified the +synthesizer parts are not configured. + +When the module is loaded it looks for a file called +/etc/sound/pss_synth. This is the firmware file from the DOS install disks. +This fil holds a general MIDI emulation. The file expected is called +genmidi.ld on newer DOS driver install disks and synth.ld on older ones. + +You can also load alternative DSP algorithms into the card if you wish. One +alternative driver can be found at http://www.mpg123.de/ + -- cgit v1.2.3