PORTIBM PC Portable (uses same BIOS as XT) 0530-0537 - Windows Sound System ("WSS") (default address) Range: dipswitch selectable among PORTIBM PC Portable (uses same BIOS as XT) 0530h-0537h,PORTIBM PC Portable (uses same BIOS as XT) 0604h-060Bh, PORTIBM PC Portable (uses same BIOS as XT) 0E80h-0E87h, and PORTIBM PC Portable (uses same BIOS as XT) 0F40h-0F47h Notes: the Sound Galaxy NX16 sound cards contains a Crystal CS4231, and thus support the CODEC portion of the WSS on ports 0534h-0537h (or 0608h-060Bh, etc.) the AMD InterWave chip supports a superset of the WSS CS4231 Codec, though by default it is not placed at any of the addresses used by the WSS SeeAlso: PORTIBM PC Portable (uses same BIOS as XT) 032Ch"InterWave",PORTIBM PC Portable (uses same BIOS as XT) 0340h"Gravis",PORTIBM PC Portable (uses same BIOS as XT) 0530h"Vendetta" 0534 ?W register select (index) (see #P0895) 0535 RW data register (selected by PORTIBM PC Portable (uses same BIOS as XT) 0534h) 0536 R? (CS4231A) status register 0537 RW (CS4231A) PIO data register (Table P0895) Values for Windows Sound System CS4231 Codec register number: 00h Mixer: ADC volume (left) 01h Mixer: ADC volume (right) 02h Mixer: Line In volume (right) (see #P0896) 03h Mixer: Line In volume (left) (see #P0896) 04h Mixer: FM(Frequency Modulation) A method of encoding data as a series of magnetic flux reversals on disk or tape, commonly known as single-density recording. In frequency modulation, a series of clock pulses are written at regular intervals, with one data bit for each clock pulse. See also MFM, RLL. volume (right) (see #P0896) 05h Mixer: FM(Frequency Modulation) A method of encoding data as a series of magnetic flux reversals on disk or tape, commonly known as single-density recording. In frequency modulation, a series of clock pulses are written at regular intervals, with one data bit for each clock pulse. See also MFM, RLL. volume (left) (see #P0896) 06h Mixer: playback DAC(Digital-to-Analog Converter) A hardware device (in its simplest form, nothing more than a set of interconnected resistors) which converts a digital number into an analog signal whose voltage is proportional to the value of the digital number. VGAVideo Graphics Array and later color video boards use DACs to convert color values into the analog signals sent to the display; sound boards normally use DACs as well. volume (left) 07h Mixer: playback DAC(Digital-to-Analog Converter) A hardware device (in its simplest form, nothing more than a set of interconnected resistors) which converts a digital number into an analog signal whose voltage is proportional to the value of the digital number. VGAVideo Graphics Array and later color video boards use DACs to convert color values into the analog signals sent to the display; sound boards normally use DACs as well. volume (right) 08h playback data format 09h configuration register 1 0Ah external control 0Bh Codec status register 2 0Ch mode select bit 6: ??? 0Dh loopback control (Sound Galaxy) microphone input enabled by bit 0 ??? 0Eh playback count (high) 0Fh playback count (low) 10h configuration register 2 11h configuration register 3 12h Mixer: CD volume (right) (see #P0896) 13h Mixer: CD volume (left) (see #P0896) 14h timer (low) 15h timer (high) 16h Mixer: microphone input control (left) 17h Mixer: microphone input control (right) 18h Codec status register 3 19h Mixer: output attenuation (left) 1Ah mono input/output control (Sound Galaxy) SB volume (see #P0897) 1Bh Mixer: output attenuation (right) 1Ch record data format 1Dh playback variable frequency 1Eh record count (high) 1Fh record count (low) 48h (Sound Galaxy) ??? Notes: to enable the microphone input on the Sound Galaxy, ALL of the following registers must be set: 00h set to 80h, 01h set to 80h, 07h to 00h, 0Dh to 01h, and 48h to 4Bh on the Sound Galaxy NX16, only bits 0-4 of the register number are fully decoded, so most registers above 1Fh are aliases of the first 32 registers Bitfields for WSS mixer volume: Bit(s) Description (Table P0896) 7 disable input source 6-5 reserved??? 4-0 volume (00h = highest, 1Fh = lowest) SeeAlso: #P0895,#P0897 Note: the GW2000 GWBVOL.EXE only permits the setting of volume levels 08h (reported as 16) to 18h (reported as 0, and sets bit 7 as well) Bitfields for WSS mixer volume (SoundBlaster): Bit(s) Description (Table P0897) 7 disable input source 6-4 reserved??? 3-0 volume (00h = highest, 0Fh = lowest) SeeAlso: #P0895,#P0896
PORTIBM PC Portable (uses same BIOS as XT) 0530-0537 - OPTi "Vendetta" Windows Sound System emulation (default addr) SeeAlso: PORTIBM PC Portable (uses same BIOS as XT) 0530h"WSS",PORTIBM PC Portable (uses same BIOS as XT) 0F8Dh"Vendetta",PORTIBM PC Portable (uses same BIOS as XT) 0F8Eh"Vendetta" 0530 -W (OPTi "Vendetta") WSS configuration register (see #P0898) 0530 R- (OPTi "Vendetta") WSS version register (see #P0899) 0534 RW (OPTi "Vendetta") codec index address register (see #P0900) 0535 RW (OPTi "Vendetta") codec indexed data register 0536 RW (OPTi "Vendetta") codec status register (see #P0901) 0537 R- (OPTi "Vendetta") codec direct data register - capture mode 0537 -W (OPTi "Vendetta") codec direct data register - playback mode Bitfields for OPTi "Vendetta" WSS configuration register: Bit(s) Description (Table P0898) 7 reserved 6 IRQ(Interrupt ReQuest) A hardware line connected to the interrupt controller chip which signals that a CPU interrupt should be generated. sense source 0 = normal 1 = interrupt auto-selection 5-3 WSS IRQ(Interrupt ReQuest) A hardware line connected to the interrupt controller chip which signals that a CPU interrupt should be generated. 000 = disable 001 = IRQ7 010-100 = IRQ9-IRQ11 101 = IRQ5 110-111 = reserved 2-0 WSS DRQ playback capture 000 = disable disable 001 = DRQ0 disable 010 = DRQ1 disable 011 = DRQ3 disable 100 = disable DRQ1 101 = DRQ0 DRQ1 110 = DRQ1 DRQ0 111 = DRQ3 DRQ0 SeeAlso: PORTIBM PC Portable (uses same BIOS as XT) 0530-0537 Bitfields for OPTi "Vendetta" WSS version register: Bit(s) Description (Table P0899) 7 available channel 0 = DRQ0/1/3 and IRQ7/9/10/11 available 1 = DRQ1/3 and IRQ7/9 available 6 IRQ(Interrupt ReQuest) A hardware line connected to the interrupt controller chip which signals that a CPU interrupt should be generated. sense 0 = no interrupt 1 = WSS interrupt active 5-0 version (04h) SeeAlso: PORTIBM PC Portable (uses same BIOS as XT) 0530-0537 Bitfields for OPTi "Vendetta" codec index address register: Bit(s) Description (Table P0900) 7 initialization 1 = codec cannot respond to parallel bus cycles 6 mode change enable 5 transfer request 0 = transfers enabled during interrupt 1 = transfers disabled by interrupt 4-0 index address (see #P0902) (audio module control register 5 bit 5 must be set in order to access indexes 10h-1Fh) SeeAlso: PORTIBM PC Portable (uses same BIOS as XT) 0530-0537 Bitfields for OPTi "Vendetta" codec status register: Bit(s) Description (Table P0901) 7 PIO capture data ready (read-only) 0 = lower byte 1 = upper byte (or 8-bit) 6 PIO capture data ready (read-only) 0 = right 1 = left (or mono) 5 PIO capture data register data ready (read-only) 0 = stale ADC data (do not re-read) 1 = fresh ADC data (ready for host data read) 4 sample ADC capture overrun/DAC(Digital-to-Analog Converter) A hardware device (in its simplest form, nothing more than a set of interconnected resistors) which converts a digital number into an analog signal whose voltage is proportional to the value of the digital number. VGAVideo Graphics Array and later color video boards use DACs to convert color values into the analog signals sent to the display; sound boards normally use DACs as well. playback underrun occurred (read-only) 3 PIO playback data needed (read-only) 0 = lower byte 1 = upper byte (or 8-bit) 2 PIO playback data needed (read-only) 0 = right 1 = left (or mono) 1 PIO playback data register ready for data (read-only) 0 = valid DAC(Digital-to-Analog Converter) A hardware device (in its simplest form, nothing more than a set of interconnected resistors) which converts a digital number into an analog signal whose voltage is proportional to the value of the digital number. VGAVideo Graphics Array and later color video boards use DACs to convert color values into the analog signals sent to the display; sound boards normally use DACs as well. data (do not overwrite) 1 = stale DAC(Digital-to-Analog Converter) A hardware device (in its simplest form, nothing more than a set of interconnected resistors) which converts a digital number into an analog signal whose voltage is proportional to the value of the digital number. VGAVideo Graphics Array and later color video boards use DACs to convert color values into the analog signals sent to the display; sound boards normally use DACs as well. data (ready for host data write) 0 interrupt enable SeeAlso: PORTIBM PC Portable (uses same BIOS as XT) 0530-0537 (Table P0902) Values for OPTi "Vendetta" (82C750) codec indirect registers: 00h MIXOUTL output control register (see #P0903) 01h MIXOUTR output control register (see #P0903) 02h CDL input control register (see #P0904) 03h CDR input control register (see #P0904) 04h FML input control register (see #P0904) 05h FMR input control register (see #P0904) 06h DACL input control register (see #P0905) 07h DACR input control register (see #P0905) 08h frequency synthesizer and playback data format register (see #P0906) 09h interface configuration register (see #P0907) 0Ah pin control register (see #P0908) 0Bh error status and initialization register (read-only) (see #P0909) 0Ch ID register (see #P0910) 0Dh reserved 0Eh playback upper base count register (used for playback and capture in SB mode) 0Fh playback lower base count register (used for playback and capture in SB mode) 10h AUXL input control register (see #P0904) 11h AUXR input control register (see #P0904) 12h LINEL input control register (see #P0904) 13h LINER input control register (see #P0904) 14h MICL input control register (see #P0911) 15h MICR input control register (see #P0912) 16h OUTL output control register (see #P0913) 17h OUTR output control register (see #P0913) 18h-1Bh reserved 1Ch capture data format register (see #P0906) 1Dh reserved 1Eh capture upper base count register 1Fh capture lower base count register Note: To access expanded mode registers (10h-1Fh), audio module control register 5 bit 5 must be set. SeeAlso: #P0900 Bitfields for OPTi "Vendetta" MIXOUTL/R output control register: Bit(s) Description (Table P0903) 7-6 source select 00 = LINE 01 = CD 10 = MIC 11 = MIXER 5 MIC +20dB gain enable 4 reserved 3-0 gain select for MIXOUTL/R 0000-1111 = 0dB to +22.5dB in 1.5dB steps SeeAlso: #P0902 Bitfields for OPTi "Vendetta" CD/FM(Frequency Modulation) A method of encoding data as a series of magnetic flux reversals on disk or tape, commonly known as single-density recording. In frequency modulation, a series of clock pulses are written at regular intervals, with one data bit for each clock pulse. See also MFM, RLL./AUX/LINE L/R input control register: Bit(s) Description (Table P0904) 7 mute enable 6-5 reserved 4-1 gain select for CD/FM(Frequency Modulation) A method of encoding data as a series of magnetic flux reversals on disk or tape, commonly known as single-density recording. In frequency modulation, a series of clock pulses are written at regular intervals, with one data bit for each clock pulse. See also MFM, RLL./AUX/LINE L/R 0000-1111 = +12dB to -33dB in 3dB steps 0 reserved SeeAlso: #P0902 Bitfields for OPTi "Vendetta" DACL/R input control register: Bit(s) Description (Table P0905) 7 mute enable 6-5 reserved 4-0 gain select for DACL/R 00000-11111 = 0dB to -46.5dB in 1.5dB steps SeeAlso: #P0902 Bitfields for OPTi "Vendetta" frequency synth and playback/capture data format: Bit(s) Description (Table P0906) 7-5 audio data format 000 = linear, 8-bit unsigned 001 = µ-law, 8-bit companded 010 = linear, 16-bit two's complement, little endian 011 = A-law, 8-bit companded 100 = reserved 101 = ADPCM, 4-bit, IMA compatible 110 = linear, 16-bit two's complement, big endian 111 = reserved (bit 7 forced to 0 in mode 1) 4 0 = mono 1 = stereo 3-0 (playback) clock frequency divide/audio sample rate frequency 0000 = 8.0kHz 0001 = 5.5125kHz 0010 = 16.0kHz 0011 = 11.025kHz 0100 = 27.42857kHz 0101 = 18.9kHz 0110 = 32.0kHz 0111 = 22.05kHz 1000 = reserved 1001 = 37.8kHz 1010 = reserved 1011 = 44.1kHz 1100 = 48.0kHz 1101 = 33.075kHz 1110 = 9.6kHz 1111 = 6.615kHz (capture) reserved Note: the contents of these registers can be changed only if mode change bit is set (see #P0900). SeeAlso: #P0902 Bitfields for OPTi "Vendetta" interface configuration register: Bit(s) Description (Table P0907) 7 capture data transfer method (0 = DMAsee Direct Memory Access, 1 = PIO) 6 playback data transfer method (0 = DMAsee Direct Memory Access, 1 = PIO) 5-4 reserved 3 autocalibration enable 2 DMAsee Direct Memory Access channel mode (0 = dual, 1 = single) 1 capture data in selected format enable 0 playback data in selected format enable SeeAlso: #P0902 Bitfields for OPTi "Vendetta" pin control register: Bit(s) Description (Table P0908) 7-2 reserved 1 interrupt pin enable (goes active high on reaching the number of samples in base count register) 0 reserved SeeAlso: #P0902 Bitfields for OPTi "Vendetta" error status and initialization register: Bit(s) Description (Table P0909) 7 capture overrun 6 playback underrun 5 autocalibration state 0 = in progress 1 = not in progress 4 current PDRQ/CDRQ status 0 = inactive (low) 1 = active (high) 3-2 under/over range on right input channel 00 = less than -1dB under range 01 = between -1dB and 0dB under range 10 = between 0dB and +1dB over range 11 = greater than +1dB over range 3-2 under/over range on left input channel 00 = less than -1dB under range 01 = between -1dB and 0dB under range 10 = between 0dB and +1dB over range 11 = greater than +1dB over range SeeAlso: #P0902 Bitfields for OPTi "Vendetta" ID register: Bit(s) Description (Table P0910) 7-4 reserved 3-0 codec revision ID (read-only) SeeAlso: #P0902 Bitfields for OPTi "Vendetta" MICL input control register: Bit(s) Description (Table P0911) 7 mute enable 6 MICR mix into OUTL enable 5 reserved 4-1 gain select for MICL 0000-1111 = +12dB to -33dB in 3dB steps 0 reserved SeeAlso: #P0902 Bitfields for OPTi "Vendetta" MICR input control register: Bit(s) Description (Table P0912) 7 mute enable 6 MICL mix into OUTR enable 5 reserved 4-1 gain select for MICR 0000-1111 = +12dB to -33dB in 3dB steps 0 reserved SeeAlso: #P0902,#P0913 Bitfields for OPTi "Vendetta" OUTL/R output control register: Bit(s) Description (Table P0913) 7 mute enable 6 reserved 5-1 gain select for OUTL/R 00000-11111 = 0dB to -93dB in 3dB steps 0 reserved SeeAlso: #P0902,#P0913