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Articles / TULARC / PC info / Hard Disk/Floppy Controller / A-B / |  |
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AHA-3980, AHA-3985 Hard Disk/Floppy Controller Settings and Configuration |
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ADAPTEC, INC.
AHA-3980, AHA-3985
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Data Bus |
32-bit PCI |
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Card Size |
Three-quarter length, full-height card |
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Card Drives supported |
Up to 14 Fast SCSI devices (model AHA-3980) Up to 21 Fast SCSI devices (model AHA-3985) |
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Floppy drives supported |
None |
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CONNECTIONS | |||
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Function |
Location |
Function |
Location |
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50-pin SCSI channel A connector - external |
J1 |
50-pin SCSI channel B connector - internal |
J9 |
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4-pin connector - drive active LED |
J6 |
50-pin SCSI channel C connector - internal (model AHA-3985 only) |
J10 |
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50-pin SCSI channel A connector - internal |
J8 | ||
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USER CONFIGURABLE SETTINGS | |||
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Function |
Label |
Position | |
| » |
Channel A bus is connected to one computer only |
J2 |
Open |
|
Channel A bus is shared by two computers |
J2 |
Closed | |
| » |
Channel B bus is connected to one computer only |
J3 |
Open |
|
Channel B bus is shared by two computers |
J3 |
Closed | |
| » |
Channel C bus is connected to one computer (AHA-3985 only) |
J4 |
Open |
|
Channel C bus is shared by two computers (AHA-3985 only) |
J4 |
Closed | |
| » |
Host computer supports PCI interrupts A, B, C, & D |
J13 |
Open |
|
Host computer supports PCI interrupts A & B only |
J13 |
Closed | |
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MISCELLANEOUS TECHNICAL NOTES |
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Jumpers J2, J3 and J4 enable other adapter cards on different computers to share devices on channels A, B, or C (model AHA-3985) with this adapter card. Device access is sequential. |
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