UNIDENTIFIED
TOP AT I/O PLUS
| 
 
  | |
| 
 Data bus:  | 
 16-bit, ISA  | 
| 
 Size:  | 
 Half-length, full-height card  | 
| 
 Hard drive supported:  | 
 Two IDE (AT) interface drives  | 
| 
 Floppy drives supported:  | 
 Two 360KB, 720KB, 1.2MB, or 1.44MB drives  | 
| 
 CONNECTIONS  | |
| 
 Function  | 
 Location  | 
| 
 40-pin IDE (AT) Interface connector  | 
 J1  | 
| 
 34-pin control cable connector - floppy drive  | 
 J2  | 
| 
 10-pin serial port 1  | 
 J3  | 
| 
 10-pin serial port 2  | 
 J4  | 
| 
 Game port  | 
 J5  | 
| 
 Mouse port - PS/2 style  | 
 J6  | 
| 
 25-pin parallel port  | 
 J7  | 
| 
 2-pin connector - drive active LED  | 
 J8  | 
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Location  | 
 Setting  | |
| » | 
 Hard drive controller enabled  | 
 JP1  | 
 Pins 2 & 3 closed  | 
| 
 Hard drive controller disabled  | 
 JP1  | 
 Pins 1 & 2 closed  | |
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Location  | 
 Setting  | |
| » | 
 Mouse port enabled  | 
 JP2  | 
 Pins 2 & 3 closed  | 
| 
 Mouse port disabled  | 
 JP2  | 
 Pins 1 & 2 closed  | |
| » | 
 Game port enabled  | 
 SW1/1  | 
 On  | 
| 
 Game port disabled  | 
 SW1/1  | 
 Off  | |
| » | 
 Serial port 2 enabled  | 
 SW1/2  | 
 On  | 
| 
 Serial port 2 disabled  | 
 SW1/2  | 
 Off  | |
| » | 
 Serial port 1 enabled  | 
 SW1/3  | 
 On  | 
| 
 Serial port 1 disabled  | 
 SW1/3  | 
 Off  | |
| » | 
 Floppy drive enabled  | 
 SW1/4  | 
 On  | 
| 
 Floppy drive disabled  | 
 SW1/4  | 
 Off  | |
| » | 
 IDE port enabled  | 
 SW1/5  | 
 On  | 
| 
 IDE port disabled  | 
 SW1/5  | 
 Off  | |
| 
 MOUSE PORT INTERRUPT SELECT - JP3  | |||||
| 
 IRQ  | 
 Jumper A  | 
 Jumper B  | 
 Jumper C  | 
 Jumper D  | |
| » | 
 IRQ5  | 
 Open  | 
 Open  | 
 Open  | 
 Closed  | 
| 
 IRQ2  | 
 Closed  | 
 Open  | 
 Open  | 
 Open  | |
| 
 IRQ3  | 
 Open  | 
 Closed  | 
 Open  | 
 Open  | |
| 
 IRQ4  | 
 Open  | 
 Open  | 
 Closed  | 
 Open  | |
| 
 PARALLEL PORT CONFIGURATION  | |||
| 
 LPT/Address  | 
 SW1/6  | 
 SW1/7  | |
| » | 
 LPT1/3BCh  | 
 Off  | 
 On  | 
| 
 LPT2/278h  | 
 On  | 
 Off  | |
| 
 LPT3/378h  | 
 On  | 
 On  | |
| 
 Disabled  | 
 Off  | 
 Off  | |