KDF11-U CPU pinout - Revision history

Jnc: +New category

2024-02-06T14:14:46Z

+New category

Jnc: List is 100.00% complete

2022-06-01T05:27:03Z

List is 100.00% complete

Jnc: A lost soul (which ironically I had found years ago, when writing KT24 :-)

2022-06-01T05:17:52Z

A lost soul (which ironically I had found years ago, when writing KT24 :-)

Jnc: Two separate DTR's

2022-06-01T04:03:34Z

Two separate DTR's

Jnc: No 'G' in DEC alphabet

2022-06-01T03:53:58Z

No 'G' in DEC alphabet

Jnc: blank 'Location' pins _mostly_ not connected

2022-05-31T12:08:12Z

blank 'Location' pins _mostly_ not connected

Jnc: missed a couple

2022-05-31T04:33:43Z

missed a couple

Jnc: First draft; hopefully correct

2022-05-31T04:09:57Z

First draft; hopefully correct

New page

The [[KDF11-U CPU]] of the [[PDP-11/24]] plugs into a specially-wired slot of the -11/24 [[backplane]]. Some of the customization relates to the semi-separate [[UNIBUS]], and [[Extended UNIBUS]] used between the [[Central Processing Unit|CPU]] and [[main memory]]; others are part of the connection between the CPU and the optional [[UNIBUS map]] board, the [[KT24 UNIBUS map option|KT24]].

The table below provides the complete, detailed pinout of the edge connector of the CPU [[printed circuit board|PCB]]. Pins are identified in the usual DEC manner: pin 'XYz' is on [[DEC edge connector contact identification|connector]] 'X'; [[DEC alphabet|contact land]] 'Y' of that connector; and 'z' identifies the side. The 'Location' gives the location of the connection in the KDF11-U engineering drawings: 'Kx' is the page number, and the second field, of the form 'Xn', are the coordinates on that page. Pins which appear on multiple pages have multiple locations.

Pins with blank 'Location' fields do not seem to be connected to anything; 'Signals' listed for such pins are those usually seen on those pins in [[Modified UNIBUS Device|MUD]] and [[Small Peripheral Controller|SPC]] slots.

{| class="wikitable"
! Pin !! Location !! Signal
|-
| AA1 || K9-B1 || BMIB00
|-
| AA2 || K3-B7 || +5V
|-
| AB1 || K9-B1 || BMIB01
|-
| AB2 ||   || Boot Enable
|-
| AC1 || K9-B1 || BMIB02
|-
| AC2 || K3-B6 || Gnd
|-
| AD1 || K9-B1 || BMIB03
|-
| AD2 || K13-B6 || DAL16 H
|-
| AE1 || K9-B1 || BMIB04
|-
| AE2 || K12-C2 || BSIO H
|-
| AF1 || K9-B1 || BMIB05
|-
| AF2 ||   || D05
|-
| AG1 ||   ||
|-
| AG2 ||   ||
|-
| AH1 || K9-A1 || BMIB06
|-
| AH2 || K13-A5 || MREPLY L
|-
| AJ1 || K9-A1 || BMIB07
|-
| AJ2 || K13-A5 || ABORT L
|-
| AK1 || K9-D1 || BMIB08
|-
| AK2 || K9-D1 || BMIB11
|-
| AL1 || K9-D1 || BMIB09
|-
| AL2 || K9-C1 || BMIB12
|-
| AM1 || K9-D1 || BMIB10
|-
| AM2 || K9-C1 || BMIB13
|-
| AN1 || K11-C4 || MA21
|-
| AN2 || K9-C1 || BMIB14
|-
| AP1 || K11-C4 || MA20
|-
| AP2 ||   || BBSY
|-
| AR1 || K6-A3 || BOOT ENABLE L
|-
| AR2 || K13-B6 || DAL18 H
|-
| AS1 ||   ||
|-
| AS2 || K13-B6 || DAL17 H
|-
| AT1 || K3-A6 || Gnd
|-
| AT2 || K9-C1 || BMIB15
|-
| AU1 || K13-A5 || UBMAP L
|-
| AU2 || K1-B6 || LREAD L
|-
| AV1 || K13-B8 || +5V
|-
| AV2 || K13-A6 || DMMUS L
|-
|
|-
| BA1 || K1-A6 || C0 H
|-
| BA2 || K3-B7 || +5V
|-
| BB1 || K13-B6 || DAL19 H
|-
| BB2 || K1-D5 || MCLK L
|-
| BC1 || K1-A6 || LAT ADD 5
|-
| BC2 || K3-B6 || Gnd
|-
| BD1 || K13-B6 || DAL21 H
|-
| BD2 || K13-B6 || DAL20 H
|-
| BE1 || K11-B4 || MA19
|-
| BE2 || K11-B4 || MA18
|-
| BF1 || K3-A3; K6-A5 || BUS ACLO
|-
| BF2 || K3-A2; K6-A5 || BUS DCLO
|-
| BG1 ||   ||
|-
| BG2 ||   ||
|-
| BH1 || K11-B4 || MA01
|-
| BH2 || K11-B4 || MA00
|-
| BJ1 || K11- || MA03
|-
| BJ2 || K11- || MA02
|-
| BK1 || K11- || MA05
|-
| BK2 || K11- || MA04
|-
| BL1 || K11- || MA07
|-
| BL2 || K11- || MA06
|-
| BM1 || K11- || MA09
|-
| BM2 || K11- || MA08
|-
| BN1 || K11- || MA11
|-
| BN2 || K11- || MA10
|-
| BP1 || K11- || MA13
|-
| BP2 || K11- || MA12
|-
| BR1 || K11-C4 || MA15
|-
| BR2 || K11-C4 || MA14
|-
| BS1 || K11-D4 || MA17
|-
| BS2 || K11-D4 || MA16
|-
| BT1 || K3-A6 || Gnd
|-
| BT2 || K11-A4 || MC1
|-
| BU1 || K1-B6|| BUS REQ L
|-
| BU2 || K11-A4 || MC0
|-
| BV1 || K1-B1 || MEM MSYN L
|-
| BV2 || K1-C6 || DIN H
|-
|
|-
| CA1 ||   ||
|-
| CA2 || K3-B7 || +5V
|-
| CB1 || K3-D6; K10-A3 || BUS NPG
|-
| CB2 ||   ||
|-
| CC1 || K2-D8; K3-C5 || BUS PA
|-
| CC2 || K3-B6 || Gnd
|-
| CD1 || K6-D8 || LINE CLOCK
|-
| CD2 || K3-D6; K5-C3 || BUS D15
|-
| CE1 || K1-D6 || CT0 H
|-
| CE2 || K3-C5; K5-C3 || BUS D14
|-
| CF1 || K1-D6 || CT1 H
|-
| CF2 || K3-D8; K5-C3 || BUS D13
|-
| CG1 ||   ||
|-
| CG2 ||   ||
|-
| CH1 || K3-D8; K5-B3 || BUS D11
|-
| CH2 || K3-C5; K5-C3 || BUS D12
|-
| CJ1 || K1-D1 || ENB A&C H
|-
| CJ2 || K3-C5; K5-B3 || BUS D10
|-
| CK1 || K1-A8 || E39p26 D9
|-
| CK2 || K3-D8; K5-B3 || BUS D09
|-
| CL1 || K2-C2 || INT BOOT SSYN L
|-
| CL2 || K3-C7; K5-B3 || BUS D08
|-
| CM1 || K4-B7 || DIR IN L
|-
| CM2 || K3-D8; K4-C3 || BUS D07
|-
| CN1 || K11-D4 || I/O PAGE H
|-
| CN2 || K3-C7; K4-C3 || BUS D04
|-
| CP1 || K6-A6 || HALT REQ L
|-
| CP2 || K3-D8; K4-C3 || BUS D05
|-
| CR1 || K1-A1 || HALT GRANT L
|-
| CR2 || K3-D8; K4-B3 || BUS D01
|-
| CS1 || K2-D8; K3-D6 || BUS PB
|-
| CS2 || K3-C7; K4-A3 || BUS D00
|-
| CT1 || K3-A6 || Gnd
|-
| CT2 || K3-D8; K4-B3 || BUS D03
|-
| CU1 || K12-D5 || +15V
|-
| CU2 || K3-C7; K4-B3 || BUS D02
|-
| CV1 ||   || AC LO
|-
| CV2 || K3-C7; K4-C3 || BUS D06
|-
|
|-
| DA1 || K7-D1 || CHIP RESET H
|-
| DA2 || K3-B7 || +5V
|-
| DB1 || K7-C3 || COMB CSEL L
|-
| DB2 ||   ||
|-
| DC1 || K4-A5 || BDAL00
|-
| DC2 || K3-B6 || Gnd
|-
| DD1 || K4-A5 || BDAL01
|-
| DD2 || K3-C5; K6-B6 || BUS BR7
|-
| DE1 || K4-A5 || BDAL02
|-
| DE2 || K3-D6; K6-B6 || BUS BR6
|-
| DF1 || K4-A5 || BDAL03
|-
| DF2 || K3-C3; K6-C6 || BUS BR5
|-
| DG1 ||   ||
|-
| DG2 ||   ||
|-
| DH1 || K4-D5 || BDAL04
|-
| DH2 || K3-C3; K6-C6 || BUS BR4
|-
| DJ1 || K4-D5 || BDAL05
|-
| DJ2 || K5-D6 || BDAL15
|-
| DK1 || K4-D5 || BDAL06
|-
| DK2 || K5-D6 || BDAL14
|-
| DL1 || K2-D3; K3-C7 || BUS INIT
|-
| DL2 || K3-D6; K10-D6 || BUS BG7
|-
| DM1 || K4-D5 || BDAL07
|-
| DM2 ||   ||
|-
| DN1 || K5-A5 || BDAL08
|-
| DN2 || K3-D6; K10-D6 || BUS BG6
|-
| DP1 || K5-A5 || BDAL09
|-
| DP2 ||   ||
|-
| DR1 || K5-A5 || BDAL10
|-
| DR2 || K3-D4; K10-D6 || BUS BG5
|-
| DS1 || K5-A5 || BDAL11
|-
| DS2 ||   ||
|-
| DT1 || K3-A6 || Gnd
|-
| DT2 || K3-D4; K10-C6 || BUS BG4
|-
| DU1 || K5-D6 || BDAL13
|-
| DU2 || K2-C6 || MMU CYC L
|-
| DV1 ||   ||
|-
| DV2 || K5-C6 || BDAL12
|-
|
|-
| EA1 ||   ||
|-
| EA2 || K3-B7 || +5V
|-
| EB1 ||   ||
|-
| EB2 ||   ||
|-
| EC1 || K3-D2; K11-D7 || BUS A12
|-
| EC2 || K3-B6 || Gnd
|-
| ED1 || K3-C1; K11-D5 || BUS A17
|-
| ED2 || K3-C1; K11-D5 || BUS A15
|-
| EE1 || K2-D3; K3-C1 || BUS MSYN
|-
| EE2 || K3-D2; K11-D5 || BUS A16
|-
| EF1 || K3-D4; K11-A7 || BUS A02
|-
| EF2 || K3-D2; K11-A5 || BUS C1
|-
| EG1 ||   ||
|-
| EG2 ||   ||
|-
| EH1 || K3-C3; K11-A5 || BUS A01
|-
| EH2 || K3-D4; K11-A5 || BUS A00
|-
| EJ1 || K2-D3; K3-C1 || BUS SSYN
|-
| EJ2 || K3-D2; K11-A5 || BUS C0
|-
| EK1 || K3-D2; K11-D5 || BUS A14
|-
| EK2 || K3-C1; K11-D7 || BUS A13
|-
| EL1 || K3-C1; K11-D7 || BUS A11
|-
| EL2 || K12-D6 || SO2
|-
| EM1 ||   ||
|-
| EM2 || K12-D6 || SO1
|-
| EN1 ||   ||
|-
| EN2 || K3-D2; K11-C7 || BUS A08
|-
| EP1 || K3-D2; K11-D7 || BUS A10
|-
| EP2 || K3-C3; K11-C7 || BUS A07
|-
| ER1 || K3-C1; K11-C7 || BUS A09
|-
| ER2 || K1-C1 || BUS MSTR L
|-
| ES1 || K7-C7 || UPPER 128K H
|-
| ES2 || K1-A5 || QV HOLD L
|-
| ET1 || K3-A6 || Gnd
|-
| ET2 || K7-C7 || LBSIO H
|-
| EU1 || K11-C7 || BUS A06
|-
| EU2 || K3-D4; K11-A7 || BUS A04
|-
| EV1 || K3-C3; K11-A7 || BUS A05
|-
| EV2 || K3-C3; K11-A7 || BUS A03
|-
|
|-
| FA1 ||   ||
|-
| FA2 || K3-B7 || +5V
|-
| FB1 ||   ||
|-
| FB2 || K12-C6 || -15V
|-
| FC1 ||   || SSYN
|-
| FC2 || K3-B6 || Gnd
|-
| FD1 || K2-D3; K3-C5 || BUS BBSY
|-
| FD2 || K12-A8 || +5VF
|-
| FE1 ||   ||
|-
| FE2 ||   || D02
|-
| FF1 ||   || D05
|-
| FF2 || K9-B5 || E93p12
|-
| FG1 ||   ||
|-
| FG2 ||   ||
|-
| FH1 ||   || D07
|-
| FH2 ||   ||
|-
| FJ1 || K3-D6; K10-B8 || BUS NPR
|-
| FJ2 || K9-C3 || E106p7
|-
| FK1 ||   || D08
|-
| FK2 || K12-D8 || SI2 H
|-
| FL1 || K1-B2 || ALLOW MEM MSYN H
|-
| FL2 || K12-D8 || SI2 L
|-
| FM1 || K3-C7 || BUS INTR
|-
| FM2 || K12-C8 || SI1 L
|-
| FN1 || K12-D4 || DATA TERM RDY
|-
| FN2 || K12-C8 || SI1 H
|-
| FP1 || K12-D4 || DATA TERM RDY
|-
| FP2 || K12-A5 || DC ON
|-
| FR1 || K12-D8 || REMOTE H
|-
| FR2 || K12-A5 || RUN
|-
| FS1 || K12-D8 || REMOTE L
|-
| FS2 || K12-B4 || FPBOOT
|-
| FT1 || K3-A6 || Gnd
|-
| FT2 || K3-C5; K6-B6; K10-A1 || BUS SACK
|-
| FU1 || K12-C4 || CPU RUN L
|-
| FU2 || K12-B4 || FPHALT
|-
| FV1 ||   ||
|-
| FV2 || K12-A4 || FPENB BREAK
|}

[[Category: UNIBUS PDP-11s]]

← Older revision		Revision as of 14:14, 6 February 2024
Line 457:		Line 457:

	[[Category: UNIBUS PDP-11s]]		[[Category: UNIBUS PDP-11s]]
		+	[[Category: Extended UNIBUS]]

@@ Line 3: / Line 3: @@
 The table below provides the complete, detailed pinout (as far as the Field Maintenance Print Set shows) of the edge connector of the CPU [[printed circuit board|PCB]]. Pins are identified in the usual DEC manner: pin 'XYz' is on [[DEC edge connector contact identification|connector]] 'X'; [[DEC alphabet|contact land]] 'Y' of that connector; and 'z' identifies the side. The 'Location' gives the location of the connection in the KDF11-U engineering drawings: 'Kx' is the page number, and the second field, of the form 'Xn', are the coordinates on that page. Pins which appear on multiple pages have multiple locations.
-Pins with blank 'Location' fields mostly do not seem to be connected to anything; 'Signals' listed for such pins are those usually seen on those pins in [[Modified UNIBUS Device|MUD]] and [[Small Peripheral Controller|SPC]] slots (which is what the transcribed list started with); they not be of any value in reality.
+Pins with blank 'Location' fields are not connected to anything (confirmed by visual inspection of a KDF11-U PCB). 'Signals' listed for such pins are those usually seen on those pins in [[Modified UNIBUS Device|MUD]] and [[Small Peripheral Controller|SPC]] slots (which is what the transcribed list started with); they are not of any value, in reality.
 {| class="wikitable"

@@ Line 394: / Line 394: @@
 | FD2 || K12-A8 || +5VF
 |-
-| FE1 || Unknown || Unknown
+| FE1 || K11-B6 || UB TO MA VIA UBMAP L
 |-
 | FE2 || &nbsp; || D02

@@ Line 422: / Line 422: @@
 | FM2 || K12-C8 || SI1 L
 |-
-| FN1 || K12-D4 || DATA TERM RDY
+| FN1 || K12-D4 || DATA TERM RDY 2
 |-
 | FN2 || K12-C8 || SI1 H
 |-
-| FP1 || K12-D4 || DATA TERM RDY
+| FP1 || K12-D4 || DATA TERM RDY 1
 |-
 | FP2 || K12-A5 || DC ON

@@ Line 31: / Line 31: @@
 |-
 | AF2 || &nbsp; || D05
 |-
 | AH1 || K9-A1 || BMIB06
@@ Line 109: / Line 105: @@
 |-
 | BF2 || K3-A2; K6-A5 || BUS DCLO
 |-
 | BH1 || K11-B4 || MA01
@@ Line 187: / Line 179: @@
 |-
 | CF2 || K3-D8; K5-C3 || BUS D13
 |-
 | CH1 || K3-D8; K5-B3 || BUS D11
@@ Line 265: / Line 253: @@
 |-
 | DF2 || K3-C3; K6-C6 || BUS BR5
 |-
 | DH1 || K4-D5 || BDAL04
@@ Line 343: / Line 327: @@
 |-
 | EF2 || K3-D2; K11-A5 || BUS C1
 |-
 | EH1 || K3-C3; K11-A5 || BUS A01
@@ Line 414: / Line 394: @@
 | FD2 || K12-A8 || +5VF
 |-
-| FE1 || &nbsp; ||
+| FE1 || Unknown || Unknown
 |-
 | FE2 || &nbsp; || D02
@@ Line 421: / Line 401: @@
 |-
 | FF2 || K9-B5 || E93p12
 |-
 | FH1 || &nbsp; || D07

@@ Line 1: / Line 1: @@
 The [[KDF11-U CPU]] of the [[PDP-11/24]] plugs into a specially-wired slot of the -11/24 [[backplane]]. Some of the customization relates to the semi-separate [[UNIBUS]], and [[Extended UNIBUS]] used between the [[Central Processing Unit|CPU]] and [[main memory]]; others are part of the connection between the CPU and the optional [[UNIBUS map]] board, the [[KT24 UNIBUS map option|KT24]].
-The table below provides the complete, detailed pinout of the edge connector of the CPU [[printed circuit board|PCB]]. Pins are identified in the usual DEC manner: pin 'XYz' is on [[DEC edge connector contact identification|connector]] 'X'; [[DEC alphabet|contact land]] 'Y' of that connector; and 'z' identifies the side. The 'Location' gives the location of the connection in the KDF11-U engineering drawings: 'Kx' is the page number, and the second field, of the form 'Xn', are the coordinates on that page. Pins which appear on multiple pages have multiple locations.
+The table below provides the complete, detailed pinout (as far as the Field Maintenance Print Set shows) of the edge connector of the CPU [[printed circuit board|PCB]]. Pins are identified in the usual DEC manner: pin 'XYz' is on [[DEC edge connector contact identification|connector]] 'X'; [[DEC alphabet|contact land]] 'Y' of that connector; and 'z' identifies the side. The 'Location' gives the location of the connection in the KDF11-U engineering drawings: 'Kx' is the page number, and the second field, of the form 'Xn', are the coordinates on that page. Pins which appear on multiple pages have multiple locations.
-Pins with blank 'Location' fields do not seem to be connected to anything; 'Signals' listed for such pins are those usually seen on those pins in [[Modified UNIBUS Device|MUD]] and [[Small Peripheral Controller|SPC]] slots.
+Pins with blank 'Location' fields mostly do not seem to be connected to anything; 'Signals' listed for such pins are those usually seen on those pins in [[Modified UNIBUS Device|MUD]] and [[Small Peripheral Controller|SPC]] slots (which is what the transcribed list started with); they not be of any value in reality.
 {| class="wikitable"

@@ Line 60: / Line 60: @@
 | AN2 || K9-C1 || BMIB14
 |-
-| AP1 || K11-C4 || MA20
+| AP1 || K11-B4 || MA20
 |-
 | AP2 || &nbsp; || BBSY
@@ Line 116: / Line 116: @@
 | BH1 || K11-B4 || MA01
 |-
-| BH2 || K11-B4 || MA00
+| BH2 || K11-A4 || MA00
 |-
-| BJ1 || K11- || MA03
+| BJ1 || K11-A6 || MA03
 |-
-| BJ2 || K11- || MA02
+| BJ2 || K11-A6 || MA02
 |-
-| BK1 || K11- || MA05
+| BK1 || K11-B6 || MA05
 |-
-| BK2 || K11- || MA04
+| BK2 || K11-B6 || MA04
 |-
-| BL1 || K11- || MA07
+| BL1 || K11-B6 || MA07
 |-
-| BL2 || K11- || MA06
+| BL2 || K11-B6 || MA06
 |-
-| BM1 || K11- || MA09
+| BM1 || K11-C6 || MA09
 |-
-| BM2 || K11- || MA08
+| BM2 || K11-C6 || MA08
 |-
-| BN1 || K11- || MA11
+| BN1 || K11-D6 || MA11
 |-
-| BN2 || K11- || MA10
+| BN2 || K11-C6 || MA10
 |-
-| BP1 || K11- || MA13
+| BP1 || K11-D6 || MA13
 |-
-| BP2 || K11- || MA12
+| BP2 || K11-D6 || MA12
 |-
 | BR1 || K11-C4 || MA15
@@ Line 388: / Line 388: @@
 | ET2 || K7-C7 || LBSIO H
 |-
-| EU1 || K11-C7 || BUS A06
+| EU1 || K3-D4; K11-C7 || BUS A06
 |-
 | EU2 || K3-D4; K11-A7 || BUS A04
@@ Line 474: / Line 474: @@
 | FV2 || K12-A4 || FPENB BREAK
 |}
 [[Category: UNIBUS PDP-11s]]