diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /Documentation/sound/oss/PSS |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'Documentation/sound/oss/PSS')
-rw-r--r-- | Documentation/sound/oss/PSS | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/Documentation/sound/oss/PSS b/Documentation/sound/oss/PSS new file mode 100644 index 000000000000..187b9525e1f6 --- /dev/null +++ b/Documentation/sound/oss/PSS | |||
@@ -0,0 +1,41 @@ | |||
1 | The PSS cards and other ECHO based cards provide an onboard DSP with | ||
2 | downloadable programs and also has an AD1848 "Microsoft Sound System" | ||
3 | device. The PSS driver enables MSS and MPU401 modes of the card. SB | ||
4 | is not enabled since it doesn't work concurrently with MSS. | ||
5 | |||
6 | If you build this driver as a module then the driver takes the following | ||
7 | parameters | ||
8 | |||
9 | pss_io. The I/O base the PSS card is configured at (normally 0x220 | ||
10 | or 0x240) | ||
11 | |||
12 | mss_io The base address of the Microsoft Sound System interface. | ||
13 | This is normally 0x530, but may be 0x604 or other addresses. | ||
14 | |||
15 | mss_irq The interrupt assigned to the Microsoft Sound System | ||
16 | emulation. IRQ's 3,5,7,9,10,11 and 12 are available. If you | ||
17 | get IRQ errors be sure to check the interrupt is set to | ||
18 | "ISA/Legacy" in the BIOS on modern machines. | ||
19 | |||
20 | mss_dma The DMA channel used by the Microsoft Sound System. | ||
21 | This can be 0, 1, or 3. DMA 0 is not available on older | ||
22 | machines and will cause a crash on them. | ||
23 | |||
24 | mpu_io The MPU emulation base address. This sets the base of the | ||
25 | synthesizer. It is typically 0x330 but can be altered. | ||
26 | |||
27 | mpu_irq The interrupt to use for the synthesizer. It must differ | ||
28 | from the IRQ used by the Microsoft Sound System port. | ||
29 | |||
30 | |||
31 | The mpu_io/mpu_irq fields are optional. If they are not specified the | ||
32 | synthesizer parts are not configured. | ||
33 | |||
34 | When the module is loaded it looks for a file called | ||
35 | /etc/sound/pss_synth. This is the firmware file from the DOS install disks. | ||
36 | This fil holds a general MIDI emulation. The file expected is called | ||
37 | genmidi.ld on newer DOS driver install disks and synth.ld on older ones. | ||
38 | |||
39 | You can also load alternative DSP algorithms into the card if you wish. One | ||
40 | alternative driver can be found at http://www.mpg123.de/ | ||
41 | |||