Compaq dc7100 HP Compaq dc71xx and dx61xx Series Business Desktop Computers Te - Page 119
Audio Programming, Audio Configuration
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Input/Output Interfaces 5.8.4 Audio Programming Audio subsystem programming consists configuration, typically accomplished during POST, and control, which occurs during runtime. Audio Configuration The audio subsystem is configured according to PCI protocol through the AC97 audio controller function of the 82801 ICH. Table 5-24 lists the PCI configuration registers of the audio subsystem. Table 5-24. AC97 Audio Controller PCI Configuration Registers (82801 Device 31/Function 5) PCI Config. Address Register PCI Value on Config. Reset Address Register Value on Reset 00-01h Vendor ID 8086h 14-17h Native Audio Bus 1 Mstr. Addr. 02-03h Device ID 24D5h 18-1Bh Reserved 1h 04-05h PCI Command 0000h 1C-2Bh Reserved 1h 06-07h PCI Status 0280h 2C-2Dh Subsystem Vender ID 0000h 08h Revision ID XXh 2E-2Fh Subsystem ID 0000h 09h Programming 00h 30-3Bh Reserved -- 0Ah Sub-Class 01h 3Ch Interrupt Line 00h 0Bh Base Class Code 04h 3Dh Interrupt Pin 02h 0Eh Header Type 00h 3E-FFh Reserved 0's 10-13h Native Audio Mixer 1 -- -- -- Base Addr. Technical Reference Guide 361834-002 5-33