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Articles / TULARC / PC info / I/O Cards / U-Z / |  |
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RS232C IO card Settings and Configuration |
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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 |
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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 |
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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 |
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