IND-M288S (メルコ)

C bus composite board with modem + PCM sound function, "Internet
Starter kit ".Windows 95 compatible.PnP non-compliant.8 stations on the board
There is one dip switch and three jumper switches.

Product Specifications
　Certified device name: IND-M288S
　Accreditation number: S95-2251-0
(1) Modem section
Interface unit
　Used line: Telephone line, PBX extension (NTT method)
　Telephone line interface: 2-wire interface
　PC side interface: RS-232C (emulation)
NCU department
　NCU: AA, MA, AM, MM NCU
　Dial type: pulse dial (10PPS / 20PPS)
　　　　　　　　Tone dial (DTMF)
Data modem unit
　Communication method: Full duplex (300/1200/2400/4800/7200/9600/12000/14400
　　　　　　/ 16800/19200/21600/24000/26400/28800 bps)
　　　　　　ITU-T V.21, V.22, V.22bis, V.32, V.32bis,
　　　　　　V.34, V.FC compliant, BELL 103, 212A compliant
　Modulation method: FSK (300 bps), QAM (2400, 4800, 7200, 9600, 12000, 
　　　　　　14400, 16800, 19200, 21600, 24000, 26400, 28800 bps)
　Communication speed: 300/1200/2400/4800/7200/9600/12000/14400/16800/19200
　　　　　　/ 21600/24000/26400/28800 bps
　Transmission level: -1 dBm to -15 dBm
　Reception level: 0 dBm to -43 dBm
FAX modem section
　Communication method: Half-duplex synchronous communication method V.17 / V.21ch2 / V.27ter / V.29 compliant
　Modulation method: PSK (2400, 4800), QAM (4800, 7200, 9600, 12000,
　　　　　　14400 bps)
　Communication speed: 2400/4800/7200/9600/12000/14400 bps
　Transmission level: -15 dBm
　Reception level: 0 dBm to -43 dBm
(2) Sound section
　Sound: Recording and playback by PCM sound source (Chip: CRYSTAL CS4231A-KL
　　　　　　CKANTP 9540)
　　　　　　mate-X PCM compatible (compatible means I / O port address A460h
　　　　　　　　　Indicates the implemented sound function identification ID)
　Sampling frequency: 5.5kHz, 11kHz, 22kHz, 44kHz, 48kHz
　Sound channel: mono, stereo
　Sample data width: 8 bits, 16 bits
　Source selection: Microphone input, modem sound input, WAVE file
　Microphone amplifier: AGC switchable　

・ 8 stations dip switch SW1: I / O port address and interrupt of modem section
　Level setting
1-2-3-4: I / O port address setting of modem section
　OFF-OFF-OFF-OFF 3xD6h
　ON-OFF-OFF-OFF 3xD4h
　OFF-ON-OFF-OFF 3x D 2 h
　ON-ON-OFF-OFF 3xD0h
　OFF-OFF-ON-OFF 2xD6h
　ON-OFF-ON-OFF 2xD4h
　OFF-ON-ON-OFF 2x D 2 h
　ON-ON-ON-OFF 2xD0h
　OFF-OFF-OFF-ON 1xD6h
　ON-OFF-OFF-ON 1xD4h
　OFF-ON-OFF-ON 1xD2h
　ON-ON-OFF-ON 1xD0h
　OFF-OFF-ON-ON 0xD6h
　ON-OFF-ON-ON 0xD4h
　OFF-ON-ON-ON 0xD2h (default setting)
　ON-ON-ON-ON 0xD0h
When used with LGY-98, if the LGY-98 I / O port address is set at shipment,
Change the I / O port address of this board to 1xD2h etc.

5-6-7-8: Modem level interrupt level setting
　OFF-OFF-OFF-ON INT 0
　OFF-OFF-ON-OFF INT 1 (factory setting)
　OFF-ON-OFF-OFF ■ INT 2
　ON-OFF-OFF-OFF INT 5 (only when the sound function is disabled)
Sound section I / O port address: 56Exh, 57Exh, 5BExh, A460h,
　　　　　　　　　　　　　　　 F40h, F44h, F45h, F46h, F47h, F48h
The DMA channel of the sound unit is 0 or 3, the interrupt level is INT 0, INT 1,
Select from INT5.

・ 3 jumper switch JP5: Enable / Disable setting of sound function
　CRYSTAL CS4231A-KL CKANTP9540 side two short ■ sound function effective
　Two card edge side short ■ sound function invalid

If you use sound, the hardware will use INT5
Specify INT5 in (If you set PCM to INT2, INT2 and INT5
I can not use it).If you use INT5 as a modem, be sure to use the sound function of IND.
Set not to use.
There are parts that sound utility is shared with Melco WSN,
There may be a display such as a WSN recorder but there is no problem.
When the HDD or FDD is accessed during recording / playback, skipping or noise mixing occurs.
Settings for using sound on MS-DOS: WSN 98.Use COM.
　WSN 98.COM option switch
　　None: Disable the sound function identification ID on the IND sound board
　　/ P: Select PC-9821-X series equivalent
　　/ F: Select PC-9801-86 board equivalent
PCM 16bit stereo 48K or 44K sampling when used with PC-586RA
Avoid recording of.It may not be recorded with normal sound quality.
Do not pause during ADPCM playback.Normal volume can be obtained by restarting
May not exist (ADPCM specification).