ADAPTEC, INC.
AHA-1540C, AHA-1542C
| 
 
  | 
| 
 Data bus:  | 
 16-bit, ISA  | 
| 
 Size:  | 
 Half-length, full-height card  | 
| 
 Hard drive supported:  | 
 Up to seven SCSI devices  | 
| 
 Floppy drives supported:  | 
 360KB, 720KB, 1.2MB, or 1.44MB (2)  | 
| 
 CONNECTIONS  | |
| 
 Function  | 
 Location  | 
| 
 SCSI drive interface (50 pin) internal  | 
 CN1  | 
| 
 SCSI drive interface (50 pin) external  | 
 CN2  | 
| 
 Floppy drive interface (AHA-1542C only)  | 
 CN3  | 
| 
 Hard drive activity LED  | 
 CN4  | 
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Location  | 
 Setting  | |
| » | 
 SCSI Termination set with configuration software  | 
 SW1/switch 1  | 
 off  | 
| 
 SCSI Termination enabled  | 
 SW1/switch 1  | 
 on  | |
| » | 
 Floppy drive enabled  | 
 SW1/switch 5  | 
 off  | 
| 
 Floppy drive disabled  | 
 SW1/switch 5  | 
 on  | |
| 
 I/O PORT ADDRESS CONFIGURATION  | |||
| 
 Address  | 
 SW1/switch 2  | 
 SW1/switch 3  | 
 SW1/switch 4  | 
| 
 330-333h  | 
 off  | 
 off  | 
 off  | 
| 
 334-337h  | 
 on  | 
 off  | 
 off  | 
| 
 230-233h  | 
 off  | 
 on  | 
 off  | 
| 
 234-237h  | 
 on  | 
 on  | 
 off  | 
| 
 130-133h  | 
 off  | 
 off  | 
 on  | 
| 
 134-137h  | 
 on  | 
 off  | 
 on  | 
| 
 Reserved  | 
 off  | 
 on  | 
 on  | 
| 
 Reserved  | 
 on  | 
 on  | 
 on  | 
| 
 BIOS ADDRESS CONFIGURATION  | |||
| 
 Address  | 
 SW1/switch 6  | 
 SW1/switch 7  | 
 SW1/switch 8  | 
| 
 DC000h  | 
 off  | 
 off  | 
 off  | 
| 
 D8000h  | 
 on  | 
 off  | 
 off  | 
| 
 D4000h  | 
 off  | 
 on  | 
 off  | 
| 
 D0000h  | 
 on  | 
 on  | 
 off  | 
| 
 CC000h  | 
 off  | 
 off  | 
 on  | 
| 
 C8000h  | 
 on  | 
 off  | 
 on  | 
| 
 Reserved  | 
 off  | 
 on  | 
 on  | 
| 
 Disabled  | 
 on  | 
 on  | 
 on  |