UNIDENTIFIED
RS232C
Card Type |
Multi 1/0 card |
Chip Set |
Unidentified |
Maximum Onboard Memory |
Unidentified |
I/O Options |
Serial ports (2) |
Hard Drives supported |
None |
Floppy drives supported |
None |
Data Bus |
8-bit ISA |
Card Size |
Half-height card |
CONNECTIONS | |||
Function |
Label |
Function |
Label |
Serial port 1 |
CN1 |
Serial port 2 |
J2 |
SERIAL PORT 1 ADDRESS SELECTION | ||
Setting |
SW1/1 |
SW1/3 |
Port disabled |
Off |
Off |
3E8-2EF |
Off |
On |
3F8-3FF |
On |
Off |
SERIAL PORT 2 ADDRESS SELECTION | ||
Setting |
SW1/2 |
SW1/4 |
Port disabled |
Off |
Off |
2E8-2EF |
Off |
On |
2F8-2FF |
On |
Off |
SERIAL PORT 1 INTERRUPT SELECTION | ||
IRQ |
SW1/5 |
SW1/6 |
Interrupt disabled |
Off |
Off |
IRQ3 |
Off |
On |
IRQ4 |
On |
Off |
SERIAL PORT 2 INTERRUPT SELECTION | ||
IRQ |
SW1/7 |
SW1/8 |
Interrupt disabled |
Off |
Off |
IRQ3 |
Off |
On |
IRQ4 |
On |
Off |
MISCELLANEOUS TECHNICAL NOTES |
A second serial port may be added by inserting an UM8250 into U2, a MC1489 into U3, a MC1488 into U4, and connecting an external adapter to J2 |