CS4231.SYS

Device driver for Crystal Semiconductor Audio chipset (IBM ThinkPad 750C).

DEVICE=\MMOS2\CS4231.SYS P:xxx I:xx D:x N:BSAUD1$

Parameter

 * P: IO Port Address. Valid addresses are 530, E80, F40 and 604.
 * I: Interrupt Request Level. Valid IRQs are 3, 5, 7 and 11.
 * D: PlayDMA and RecordDMA Channels. Valid values are 1 and 3.
 * N: Name of audio device.