UNIDENTIFIED
I/O PLUS
Card Type |
Multi I/O card |
Chip Set |
Unidentified |
Maximum Onboard Memory |
Unidentified |
I/O Options |
Serial ports (2), Parallel port, Apple II game port (2), PC game port |
Data Bus |
8-bit ISA |
Card Size |
Half length, half height |
CONNECTIONS | |||
Function |
Label |
Function |
Label |
Serial port 1 |
J1 |
Apple II game port 1 |
J5 |
Serial port 2 (DTE configuration) |
J2 |
Apple II game port 2 |
J6 |
Serial port 2 (DCE configuration) |
J3 |
PC game port |
J7 |
Parallel port |
J4 |
USER CONFIGURABLE SETTINGS | ||
Function |
Label |
Position |
Game port enabled |
JP2/G |
Closed |
Game port disabled |
JP2/G |
Open |
PARALLEL PORT ADDRESS SELECTION | ||
Setting |
Label |
Position |
LPT1 enabled |
JP2/P1 |
Closed |
LPT1 disabled |
JP2/P1 |
Open |
LPT 2 enabled |
JP2/P2 |
Closed |
LPT 2 disabled |
JP2/P2 |
Open |
SERIAL PORT 1 ADDRESS SELECTION | ||
Setting |
Label |
Position |
COM1 enabled |
JP2/C1 |
Closed |
COM1 disabled |
JP2/C1 |
Open |
SERIAL PORT 1 INTERRUPT SELECTION | ||
IRQ |
Label |
Position |
IRQ4 enabled |
JP1/4 |
Closed |
IRQ4 disabled |
JP1/4 |
Open |
SERIAL PORT 2 SETTINGS (S - OPTION) | ||
IRQ |
Label |
Position |
IRQ3 enabled |
JP1/3S |
Closed |
IRQ3 disabled |
JP1/3S |
Open |
COM2 enabled |
JP2/S2 |
Closed |
COM2 disabled |
JP2/S2 |
Open |
Note: These options are only used when the board was received as an option S. |
PARALLEL PORT INTERRUPT SELECTION | ||
IRQ |
Label |
Position |
IRQ7 enabled |
JP1/7 |
Closed |
IRQ7 disabled |
JP1/7 |
Open |
Note: LPT is only on Rev. D and up boards. |
MISCELLANEOUS TECHNICAL NOTES |
Note: To use the Apple II joystick(s) IC 746505 must be installed at U1. This IC is not required when using an IBM-type joystick. |