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 | |