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32 .Nd ESS Technology AudioDrive family audio device driver
35 .Cd "ess* at pnpbios? index ?"
37 .Cd "audio* at audiobus?"
42 driver provides support for the ESS 1788, 1888, 1887, and 888 AudioDrive
45 The AudioDrive 1788 is a half-duplex device, while the 1888, 1887, and
46 888 are full-duplex. All are capable of 8- and 16-bit audio sample
47 recording and playback at rates up to 44.1kHz.
49 The AudioDrive takes 16 I/O ports. The I/O port range, IRQ, and DRQ
50 channels are set by the driver to the values specified in the
51 configuration file (or for isapnp, pnpbios, or ofisa, the values
52 assigned from the firmware).
53 The I/O port base must be one of 0x220, 0x230, 0x240,
54 0x250. The IRQ must be one of 5, 7, 9, 10 (or 15 on the 1887
55 only). The first DRQ channel must be selected from 0, 1, 3. The second
56 DRQ channel (used for playback by the full-duplex 1888/1887, ignored
57 by the 1788) can additionally be set to 5. If both DRQ channels are
58 used they must be different.
60 The joystick interface (if enabled) is handled by the
73 device driver appeared in
76 The AudioDrive devices have a SoundBlaster compatibility mode, and may
77 be detected by the SoundBlaster driver (see
79 rather than the AudioDrive driver. The workaround is to remove the
80 SoundBlaster driver from the kernel configuration.