TANDY/RADIO SHACK
RS-232 UPGRADE BOARD
|
Card Type |
Serial card |
|
Chip Set |
Unidentified |
|
Maximum Onboard Memory |
Unidentified |
|
I/O Options |
Serial port |
|
Hard Drives supported |
None |
|
Floppy drives supported |
None |
|
Data Bus |
SBus |
|
Card Size |
Half-length, full-height card |
|
CONNECTIONS | |||
|
Function |
Label |
Function |
Label |
|
DB-25 serial port |
CN1 |
Sbus interface |
CN2 |
|
BASE I/O ADDRESS AND INTERRUPT SELECTION | |||||
|
Address |
IRQ |
SW1/1 |
SW1/2 |
SW1/3 |
SW1/4 |
|
COM1 (3F8h) |
4 |
Off |
Off |
Off |
On |
|
COM2 (2F8h) |
3 |
Off |
On |
Off |
On |
|
COM3 (3E8h) |
4 |
On |
Off |
Off |
On |
|
COM3 (3E8h) |
2 |
On |
Off |
On |
On |
|
COM4 (2F8h) |
3 |
On |
On |
Off |
On |
|
COM4 (2F8h) |
5 |
On |
On |
On |
On |