UNIDENTIFIED
MIOXT-320
Card Type |
Multi I/O |
Chipset Controller |
Unidentified |
I/O Options |
Floppy drive interface, game port, parallel port, serial ports (2), clock (location unidentified) |
Maximum Dram |
N/A |
CONNECTIONS | |||
Purpose |
Location |
Purpose |
Location |
Game port |
J1 |
Serial port 2 |
J4 |
Parallel port |
J2 |
Floppy drive interface |
J5 |
Serial port 1 |
J3 |
SERIAL PORT SELECTION | ||
J3 |
J4 |
JP1 |
Port 1 |
Port 2 |
Pins 2 & 3 closed |
Port 2 |
Port 1 |
Pins 1 & 2 closed |
SERIAL PORT CONFIGURATION | |||||
Port 1 |
Port 2 |
SW1/1 |
SW1/2 |
SW1/3 |
SW1/4 |
COM1 |
COM2 |
On |
Off |
On |
Off |
COM1 |
COM4 |
On |
Off |
Off |
On |
COM1 |
Disabled |
On |
Off |
Off |
Off |
COM3 |
COM2 |
Off |
On |
On |
Off |
COM3 |
COM4 |
Off |
On |
Off |
On |
COM3 |
Disabled |
Off |
On |
Off |
Off |
Disabled |
COM2 |
Off |
Off |
On |
Off |
Disabled |
COM4 |
Off |
Off |
Off |
On |
Disabled |
Disabled |
Off |
Off |
Off |
Off |
SERIAL PORT INTERRUPT SELECTION | |||||
Port 1 |
Port 2 |
SW2/1 |
SW2/2 |
SW2/3 |
SW2/4 |
IRQ3 |
IRQ4 |
Off |
On |
On |
Off |
IRQ4 |
IRQ3 |
On |
Off |
Off |
On |
PARALLEL PORT CONFIGURATION | |||
Port |
Address |
SW1/5 |
SW1/6 |
Enabled |
278h (LPT1) |
On |
Off |
Enabled |
378h (LPT2) |
Off |
On |
Disabled |
N/A |
Off |
Off |
PARALLEL PORT INTERRUPT SELECTION | ||
IRQ |
SW2/5 |
SW2/6 |
IRQ5 |
Off |
On |
IRQ7 |
On |
Off |
GAME PORT CONFIGURATION | |
Port |
SW1/7 |
Enabled |
On |
Disabled |
Off |
CLOCK CONFIGURATION | ||||
Clock |
IRQ |
SW1/8 |
SW2/7 |
SW2/8 |
Enabled |
IRQ2 |
On |
On |
Off |
Enabled |
IRQ5 |
On |
Off |
On |
Disabled |
N/A |
Off |
N/A |
N/A |
SECOND SERIAL PORT ACTIVATION | |
To activate the second serial port, the following chips must be installed: | |
Chip |
Socket |
SN75188 or MC1488P |
U5 |
SN75189 or MC1489P |
U6 |
IC 8250 |
U11 |