TEXT View Source
# ADVANCED MICROCOMPUTER SYSTEMS, INC.
422/485PC-20/DB25
Card Type Serial card
Chip Set Unidentified
Maximum Onboard Memory N/A
I/O Options Serial ports (2)
Data Bus 16-bit ISA
Floppy drives supported N/A
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label |
|-------------------------------+----------------------------|
| 37-pin serial port connector | CN1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT ADDRESS CONFIGURATION |
|------------------------------------------------------------|
| Serial port 1 | Serial | J7/A | J7/B | J7/C | J7/D |
| | port 2 | | | | |
|---------------+--------+--------+--------+--------+--------|
| » | COM1 | COM2 | Closed | Closed | Open | Open |
| | (3F8h) | (2F8h) | | | | |
|---+-----------+--------+--------+--------+--------+--------|
| | COM2 | COM3 | Open | Closed | Closed | Open |
| | (2F8h) | (3E8h) | | | | |
|---+-----------+--------+--------+--------+--------+--------|
| | COM3 | COM4 | Open | Open | Closed | Closed |
| | (3E8h) | (2E8h) | | | | |
|---+-----------+--------+--------+--------+--------+--------|
| | COM1 | N/A | Closed | Open | Open | Open |
| | (3F8h) | | | | | |
|---+-----------+--------+--------+--------+--------+--------|
| | COM2 | N/A | Open | Closed | Open | Open |
| | (2F8h) | | | | | |
|---+-----------+--------+--------+--------+--------+--------|
| | COM3 | N/A | Open | Open | Closed | Open |
| | (3E8h) | | | | | |
|---+-----------+--------+--------+--------+--------+--------|
| | COM4 | N/A | Open | Open | Open | Closed |
| | (2E8h) | | | | | |
|---+-----------+--------+--------+--------+--------+--------|
| | Disabled | Open | Open | Open | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 1 INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | SP1/A | SP1/B | SP1/C | SP1/D | SP1/E | SP1/F |
|-------+--------+--------+--------+--------+--------+-------|
| | 2/9 | Closed | Open | Open | Open | Open | Open |
|-+-----+--------+--------+--------+--------+--------+-------|
| | 3 | Open | Closed | Open | Open | Open | Open |
|-+-----+--------+--------+--------+--------+--------+-------|
|»| 4 | Open | Open | Closed | Open | Open | Open |
|-+-----+--------+--------+--------+--------+--------+-------|
| | 5 | Open | Open | Open | Closed | Open | Open |
|-+-----+--------+--------+--------+--------+--------+-------|
| | 6 | Open | Open | Open | Open | Closed | Open |
|-+-----+--------+--------+--------+--------+--------+-------|
| | 7 | Open | Open | Open | Open | Open |Closed |
|-+-----+--------+--------+--------+--------+--------+-------|
| | 10 | Open | Open | Open | Open | Open | Open |
|-+-----+--------+--------+--------+--------+--------+-------|
| | 11 | Open | Open | Open | Open | Open | Open |
|-+-----+--------+--------+--------+--------+--------+-------|
| | 12 | Open | Open | Open | Open | Open | Open |
|-+-----+--------+--------+--------+--------+--------+-------|
| | 14 | Open | Open | Open | Open | Open | Open |
|-+-----+--------+--------+--------+--------+--------+-------|
| | 15 | Open | Open | Open | Open | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 1 INTERRUPT SELECTION (CON’T) |
|------------------------------------------------------------|
| IRQ | SP1/G | SP1/H | SP1/I | SP1/J | SP1/K |
|----------+---------+---------+---------+---------+---------|
| | 2/9 | Open | Open | Open | Open | Open |
|---+------+---------+---------+---------+---------+---------|
| | 3 | Open | Open | Open | Open | Open |
|---+------+---------+---------+---------+---------+---------|
| » | 4 | Open | Open | Open | Open | Open |
|---+------+---------+---------+---------+---------+---------|
| | 5 | Open | Open | Open | Open | Open |
|---+------+---------+---------+---------+---------+---------|
| | 6 | Open | Open | Open | Open | Open |
|---+------+---------+---------+---------+---------+---------|
| | 7 | Open | Open | Open | Open | Open |
|---+------+---------+---------+---------+---------+---------|
| | 10 | Closed | Open | Open | Open | Open |
|---+------+---------+---------+---------+---------+---------|
| | 11 | Open | Closed | Open | Open | Open |
|---+------+---------+---------+---------+---------+---------|
| | 12 | Open | Open | Closed | Open | Open |
|---+------+---------+---------+---------+---------+---------|
| | 14 | Open | Open | Open | Closed | Open |
|---+------+---------+---------+---------+---------+---------|
| | 15 | Open | Open | Open | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | SP2/A | SP2/B | SP2/C | SP2/D | SP2/E | SP2/F |
|-------+--------+--------+--------+--------+--------+-------|
| | 2/9 | Closed | Open | Open | Open | Open | Open |
|-+-----+--------+--------+--------+--------+--------+-------|
|»| 3 | Open | Closed | Open | Open | Open | Open |
|-+-----+--------+--------+--------+--------+--------+-------|
| | 4 | Open | Open | Closed | Open | Open | Open |
|-+-----+--------+--------+--------+--------+--------+-------|
| | 5 | Open | Open | Open | Closed | Open | Open |
|-+-----+--------+--------+--------+--------+--------+-------|
| | 6 | Open | Open | Open | Open | Closed | Open |
|-+-----+--------+--------+--------+--------+--------+-------|
| | 7 | Open | Open | Open | Open | Open |Closed |
|-+-----+--------+--------+--------+--------+--------+-------|
| | 10 | Open | Open | Open | Open | Open | Open |
|-+-----+--------+--------+--------+--------+--------+-------|
| | 11 | Open | Open | Open | Open | Open | Open |
|-+-----+--------+--------+--------+--------+--------+-------|
| | 12 | Open | Open | Open | Open | Open | Open |
|-+-----+--------+--------+--------+--------+--------+-------|
| | 14 | Open | Open | Open | Open | Open | Open |
|-+-----+--------+--------+--------+--------+--------+-------|
| | 15 | Open | Open | Open | Open | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 INTERRUPT SELECTION (CON’T) |
|------------------------------------------------------------|
| IRQ | SP2/G | SP2/H | SP2/I | SP2/J | SP2/K |
|----------+---------+---------+---------+---------+---------|
| | 2/9 | Open | Open | Open | Open | Open |
|---+------+---------+---------+---------+---------+---------|
| » | 3 | Open | Open | Open | Open | Open |
|---+------+---------+---------+---------+---------+---------|
| | 4 | Open | Open | Open | Open | Open |
|---+------+---------+---------+---------+---------+---------|
| | 5 | Open | Open | Open | Open | Open |
|---+------+---------+---------+---------+---------+---------|
| | 6 | Open | Open | Open | Open | Open |
|---+------+---------+---------+---------+---------+---------|
| | 7 | Open | Open | Open | Open | Open |
|---+------+---------+---------+---------+---------+---------|
| | 10 | Closed | Open | Open | Open | Open |
|---+------+---------+---------+---------+---------+---------|
| | 11 | Open | Closed | Open | Open | Open |
|---+------+---------+---------+---------+---------+---------|
| | 12 | Open | Open | Closed | Open | Open |
|---+------+---------+---------+---------+---------+---------|
| | 14 | Open | Open | Open | Closed | Open |
|---+------+---------+---------+---------+---------+---------|
| | 15 | Open | Open | Open | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTE |
|------------------------------------------------------------|
| Note: CN1 is a DB-37 connector which has two DB-25 |
| (port 1 & 2) serial ports connected. |
+------------------------------------------------------------+