Update of /cvsroot/alsa/alsa-driver/pci
In directory sc8-pr-cvs1:/tmp/cvs-serv6145
Modified Files:
azt3328.c
Log Message:
- update azt3328.c to mention sound improvements with newer PCI168 revisions
Index: azt3328.c
===================================================================
RCS file: /cvsroot/alsa/alsa-driver/pci/azt3328.c,v
retrieving revision 1.5
retrieving revision 1.6
diff -u -r1.5 -r1.6
--- azt3328.c 19 Feb 2003 09:34:02 -0000 1.5
+++ azt3328.c 19 Mar 2003 11:55:11 -0000 1.6
@@ -3,12 +3,12 @@
* Copyright (C) 2002 by Andreas Mohr <[EMAIL PROTECTED]>
*
* Framework borrowed from Bart Hartgers's als4000.c.
- * Driver developed on the PCI168 AP(W) version (subsystem ID 1801),
+ * Driver developed on PCI168 AP(W) version (PCI rev. 10, subsystem ID 1801),
* found in a Fujitsu-Siemens PC ("Cordant", aluminum case).
* Other versions are:
* PCI168 A(W), sub ID 1800
* PCI168 A/AP, sub ID 8000
- * Please give me feedback in case you try my driver with one of these !!
+ * Please give me feedback in case you try my driver with one of these!!
*
* GPL LICENSE
* This program is free software; you can redistribute it and/or modify
@@ -52,9 +52,14 @@
* required for Microsoft's logo compliance (FIXME: where ?)
* - PCI168 AP(W) card: power amplifier with 4 Watts/channel at 4 Ohms
*
- * As this card probably doesn't have a DMA FIFO buffer, it is susceptible
- * to DMA traffic underruns (resulting in sound crackling/clicking/popping).
- * This is the case with VIA chipsets or, in my case, an SiS735, which is
+ * Certain PCI versions of this card are susceptible to DMA traffic underruns
+ * in some systems (resulting in sound crackling/clicking/popping),
+ * probably because they don't have a DMA FIFO buffer or so.
+ * Overview (PCI ID/PCI subID/PCI rev.):
+ * - no DMA crackling on SiS735: 0x50DC/0x1801/16
+ * - unknown performance: 0x50DC/0x1801/10
+ *
+ * Crackling happens with VIA chipsets or, in my case, an SiS735, which is
* supposed to be very fast and supposed to get rid of crackling much
* better than a VIA, yet ironically I still get crackling, like many other
* people with the same chipset.
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