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B-301 (REV. B)

MECER CORPORATION

B-301 (REV. B)

Card Type

Sound card

Chipset Controller

ES488

I/O Options

CD audio in, CD-ROM interface (2), line in, line out, microphone in (2), speaker out, volume

Maximum DRAM

N/A

CONNECTIONS

Purpose

Location

Purpose

Location

Speaker out

J1

Mistumi CD-ROM interface

JP105

Microphone in

J2

CD audio in

JP109

Line in

J3

External control (see table below)

JP110

Panasonic CD-ROM interface

J7

Sound output (left)

JP112

External microphone in

JP101

Volume

VR

Sound output

JP102

   

EXTERNAL CONTROL CONNECTION/ JP110

Purpose

Location

Active low/read, port 201h

Pin 1

External microphone in

Pin 2

Active low/write, port 201h

Pin 3

FM output

Pin 4

Sound out (left)

Pin 5

Ground

Pin 6

INTERRUPT SELECTION

IRQ

JP1

7

Pins 1 & 2 closed

 

2

Pins 7 & 8 closed

 

3

Pins 5 & 6 closed

 

5

Pins 3 & 4 closed

BASE I/O ADDRESS SELECTION

Address

JP4

220h

Pins 3 & 7, 4 & 8 closed

 

240h

Pins 1 & 5, 2 & 6 closed

DMA SELECTION

Channel

JP2

JP3

1

Pins 1 & 2 closed

Pins 1 & 2 closed

 

3

Pins 3 & 4 closed

Pins 3 & 4 closed

CD ROM TYPE SELECTION

Type

J6

Panasonic

Pins 1 & 2 closed

 

Mitsumi

Pins 2 & 3 closed

CD-ROM CONFIGURATION

Setting

JCP2

Enabled

Closed

 

Disabled

Open

CD ROM ADDRESS SELECTION

Address

JCP1

300h

Closed

 

340h

Open