(TXT) View Source
# COVOX INC.
SOUND MASTER II
Card Type Sound Card
Chipset/Controller YM3812
I/O Options Line in (2), microphone jack, MIDI port,
volume control
Maximum DRAM N/A
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|----------------+----------+---------------------+----------|
| Volume control | CN1 | PC speaker | CN4 |
| | | connector | |
|----------------+----------+---------------------+----------|
| Speaker jack | CN2 | Microphone jack | M1 |
|----------------+----------+---------------------+----------|
| Game/MIDI port | CN3 | Line in 2 | M2 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INTERRUPT SELECT |
|------------------------------------------------------------|
| IRQ | J3 | J4 | J5 | J6 | J7 |
|-----------+---------+---------+---------+---------+--------|
| » | IRQ7 | Open | Open | Open | Open | Closed |
|---+-------+---------+---------+---------+---------+--------|
| | IRQ6 | Open | Open | Open | Closed | Open |
|---+-------+---------+---------+---------+---------+--------|
| | IRQ5 | Open | Open | Closed | Open | Open |
|---+-------+---------+---------+---------+---------+--------|
| | IRQ4 | Open | Closed | Open | Open | Open |
|---+-------+---------+---------+---------+---------+--------|
| | IRQ3 | Closed | Open | Open | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MIDI INTERRUPT SELECT |
|------------------------------------------------------------|
| IRQ | J8 | J9 | J10 | J11 |
|-------------+-----------+-----------+-----------+----------|
| » | IRQ2 | Closed | Open | Open | Open |
|---+---------+-----------+-----------+-----------+----------|
| | IRQ3 | Open | Closed | Open | Open |
|---+---------+-----------+-----------+-----------+----------|
| | IRQ5 | Open | Open | Closed | Open |
|---+---------+-----------+-----------+-----------+----------|
| | IRQ7 | Open | Open | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| I/O ADDRESS SELECT |
|------------------------------------------------------------|
| Address | J12 | J13 | J14 | J15 |
|-------------+-----------+-----------+-----------+----------|
| » | 22Xh | Closed | Open | Open | Open |
|---+---------+-----------+-----------+-----------+----------|
| | 24Xh | Open | Closed | Open | Open |
|---+---------+-----------+-----------+-----------+----------|
| | 28Xh | Open | Open | Closed | Open |
|---+---------+-----------+-----------+-----------+----------|
| | 2CXh | Open | Open | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRQ SELECT |
|------------------------------------------------------------|
| DRQ | J16 | J17 |
|---------------------+-------------------+------------------|
| » | DRQ1 | Open | Closed |
|---+-----------------+-------------------+------------------|
| | DRQ3 | Closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DACK SELECT |
|------------------------------------------------------------|
| DACK | J18 | J19 |
|----------------------+------------------+------------------|
| » | DACK1 | Open | Closed |
|---+------------------+------------------+------------------|
| | DACK3 | Closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FM PORT ADDRESS SELECT |
|------------------------------------------------------------|
| Address | J1 |
|----------------------------+-------------------------------|
| » | 388h | Pins 1 & 2 closed |
|---+------------------------+-------------------------------|
| | 380h | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MIDI PORT ADDRESS SELECT |
|------------------------------------------------------------|
| Address | J2 |
|----------------------------+-------------------------------|
| » | 330h | Pins 1 & 2 closed |
|---+------------------------+-------------------------------|
| | 338h | Pins 2 & 3 closed |
+------------------------------------------------------------+