HwB: Unibus Connector
Unibus
Available on the old Digital PDP-11.
+------------//--------+ +------------//--------+ |AA1 AB1 AC1 // AU1 AV1| |BA1 BB1 BC1 // BU1 BV1| |AA2 AB2 AC2 // AU2 AV2| |BA2 BB2 BC2 // BU2 BV2| +------------//--------+ +------------//--------+
(At the computer)
2 x 36 EDGE FEMALE at the backplane.
2 x 36 EDGE MALE at the cards/modules.
| PIN | SIGNAL |
|---|---|
| AA1 | /INIT |
| AA2 | POWER(+5v) |
| AB1 | /INTR |
| AB2 | GROUND |
| AC1 | /D00 |
| AC2 | GROUND |
| AD1 | /D02 |
| AD2 | /D01 |
| AE1 | /D04 |
| AE2 | /D03 |
| AF1 | /D06 |
| AF2 | /D05 |
| AH1 | /D08 |
| AH2 | /D07 |
| AJ1 | /D10 |
| AJ2 | /D09 |
| AK1 | /D12 |
| AK2 | /D11 |
| AL1 | /D14 |
| AL2 | /D13 |
| AM1 | /PA |
| AM2 | /D15 |
| AN1 | GROUND |
| AN2 | /PB |
| AP1 | GROUND |
| AP2 | /BBSY |
| AR1 | GROUND |
| AR2 | /SACK |
| AS1 | GROUND |
| AS2 | /NPR |
| AT1 | GROUND |
| AT2 | /BR7 |
| AU1 | NPG |
| AU2 | /BR6 |
| AV1 | BG7 |
| AV2 | GROUND |
| BA1 | BG6 |
| BA2 | POWER(+5v) |
| BB1 | BG5 |
| BB2 | GROUND |
| BC1 | /BR5 |
| BC2 | GROUND |
| BD1 | GROUND |
| BD2 | /BR4 |
| BE1 | GROUND |
| BE2 | BG4 |
| BF1 | /ACLO |
| BF2 | /DCLO |
| BH1 | /A01 |
| BH2 | /A00 |
| BJ1 | /A03 |
| BJ2 | /A02 |
| BK1 | /A05 |
| BK2 | /A04 |
| BL1 | /A07 |
| BL2 | /A06 |
| BM1 | /A09 |
| BM2 | /A08 |
| BN1 | /A11 |
| BN2 | /A10 |
| BP1 | /A13 |
| BP2 | /A12 |
| BR1 | /A15 |
| BR2 | /A14 |
| BS1 | /A17 |
| BS2 | /A16 |
| BT1 | GROUND |
| BT2 | /C1 |
| BU1 | /SSYN |
| BU2 | /CO |
| BV1 | /MSYN |
| BV2 | GROUND |