CWAUDIO.SYS

OS/2 Audio device driver for Crystal chipset; CS4231, CS4232 (A, B), CS4235, CS4236 (B, D, E), CS4237B, CS4238B, CS4235, CS4239

NOTE: for 4231, 4232 and 4236 use 'Mode2' driver version (latest 1.7)

TIP: If you have problems with the Yamaha OPL3-SAx chipset: According to a user, instead of using the Yamaha OPL-3 SAx drivers for the same audio chipset, using the driver for Crystal CS4232 works fine without any limitations.

CONFIG.SYS Information

DEVICE=\MMOS2\CWAUDIO.SYS

/N - Name of PDD BSAUD1$ (Supplied by install)
/V - Verbose Display
/X1 - AUX1 unmute/gain 0..100 (decimal) (*50) (usually "Line-In")
/X2 - AUX2 unmute/gain 0..100 (decimal) (*50) (usually CD-ROM)
/L - LINE unmute/gain 0..100 (decimal) (*100)(FM volume)
/LCAPT - Line-In record source X1, X2, *X1X2, L (X1X2 is mixed aux1+aux2)
/T - Inactivity power down 1..5 minutes (*1)
/MBY - <0,1> Mono bypass *1 (mono-in connected to mono-out)
/MIM - <0,1> Mono input mute *1 (mono-in not connected to input mixer)
/MOM - <0,1> Mono out mute *0 (audible)
/XCTRL0 - <0,1> XCTRL0 Pin set System specific. Sometimes used to
/XCTRL1 - <0,1> XCTRL1 Pin set control power to amplifier. On IBM Aptiva with Bose speakers, set both to 1
/P - Codec Port *534, 608, (530..FF8, divisible by 4)
/I - Codec IRQ *5, 7, 9, 11, 15 (decimal)
/D - Codec DMA 0, 1, 3 (Default 1,0)
/C - Control Port 120, *538, (120..FF8, divisible by 8)
/J - Joystick Port *200, 208, NONE
/S - Sound Blaster Port *220, 240, 260, 280, NONE
/M - MPU Port and IRQ *330, NONE, (300..3E0, divisible by 8) IRQ: 7, 9, 11, 12, 15, *NONE
/F - FM synth port *388, NONE, (388..3F8, divisible by 8)
/IRQRate:dd - Target interrupt rate *32 Range: 1..64 interrupts per second
/DMASize:nnnn - DMA Buf size maximum *8192 Range: 256..16384 (2 IRQs/Buffer)