PDP-11/34 - Revision history

Jnc: Move image into infobox

2024-02-08T17:28:36Z

Move image into infobox

2022-12-04T14:44:33Z

‎See also: +SACK turnaround and CPU hangs

2022-06-05T21:11:32Z

‎See also: +M8264 No-SACK Timeout Module

2022-02-22T13:05:09Z

‎External links: +Maintenance Card

2022-02-20T13:39:37Z

‎UNIBUS termination: neither KD11-E nor KD11-EA has built-in termination

2022-01-12T12:26:12Z

‎External links: +FMPS, manuals

2022-01-07T22:07:50Z

‎Register access: fmt

2022-01-07T22:06:57Z

‎External links: +replacement knob

2019-02-10T21:03:39Z

Ad reqd backplane

2018-10-20T16:07:07Z

Proper cat

@@ Line 1: / Line 1: @@
 {{Infobox Machine
 | name = PDP-11/34
 | manufacturer = [[Digital Equipment Corporation]]
 | architecture = [[PDP-11]]
 }}
 The '''PDP-11/34''' was [[Digital Equipment Corporation|DEC]]'s lower-cost replacement to the [[PDP-11/40]] as the low-end [[PDP-11]] system capable of running [[time-sharing]], using [[memory management]]; it had the [[PDP-11 Memory Management|limited memory management]] capabilities of the PDP-11/40, though. It was a [[UNIBUS]] machine; as such, it was normally limited to 248KB of [[main memory]].

← Older revision		Revision as of 14:44, 4 December 2022
Line 61:		Line 61:

	* [[M8264 No-SACK Timeout Module]]		* [[M8264 No-SACK Timeout Module]]
		+	* [[UNIBUS and QBUS termination]] - in particular, the [[UNIBUS and QBUS termination#SACK turnaround and CPU hangs\|SACK turnaround and CPU hangs]] section

	==External links==		==External links==

@@ Line 64: / Line 64: @@
 ** [http://www.bitsavers.org/pdf/dec/pdp11/1134/EK-1134A-TM-002_PDP1134A_PowerSys_Jul77.pdf PDP1134A power system description] (EK-1134A-TM-002)
 ** [http://www.bitsavers.org/pdf/dec/pdp11/1134/MP00082_1134_Vol2_Sep76.pdf 11/34 Vol. 2 Field Maintenance Print Set] (MP00082)
 * [https://www.millsupply.com/knob-fan-speed-grumman-olson-53777.php?p=324629 Knob with 3/8 Post & 1/4" D Shaft] - replacement power knob

← Older revision		Revision as of 13:39, 20 February 2022
Line 16:		Line 16:

	Apparently it was cloned in the Soviet Union as the [[SM 1420]].		Apparently it was cloned in the Soviet Union as the [[SM 1420]].
		+
		+	==UNIBUS termination==
		+
		+	Note that neither the KD11-E nor the KD11-EA has built-in [[UNIBUS and QBUS termination\|termination and pull-ups]] (unusual for PDP-11 CPUs); this is almost certainly the reason that the manual calls for the use of either an [[M9301 ROM]] or [[M9312 ROM]] (which include bus [[termination]]) at the start of their UNIBUS, in slot 3 or 4 of the CPU's [[backplane]].

	==Register access==		==Register access==

← Older revision		Revision as of 12:26, 12 January 2022
Line 56:		Line 56:
	==External links==		==External links==

		+	* [http://www.bitsavers.org/pdf/dec/pdp11/1134/ PDP-11/34] - BitSavers
		+	** [http://www.bitsavers.org/pdf/dec/pdp11/1134/1134_UsersManual.pdf PDP-11/34 system user's manual] (EK-11034-UG-001)
		+	** [http://www.bitsavers.org/pdf/dec/pdp11/1134/EK-1134A-TM-002_PDP1134A_PowerSys_Jul77.pdf PDP1134A power system description] (EK-1134A-TM-002)
		+	** [http://www.bitsavers.org/pdf/dec/pdp11/1134/MP00082_1134_Vol2_Sep76.pdf 11/34 Vol. 2 Field Maintenance Print Set] (MP00082)
	* [https://www.millsupply.com/knob-fan-speed-grumman-olson-53777.php?p=324629 Knob with 3/8 Post & 1/4" D Shaft] - replacement power knob		* [https://www.millsupply.com/knob-fan-speed-grumman-olson-53777.php?p=324629 Knob with 3/8 Post & 1/4" D Shaft] - replacement power knob

← Older revision		Revision as of 22:07, 7 January 2022
Line 38:		Line 38:

	In addition, some internal CPU [[register]]s are available at addresses 777710 -777717.		In addition, some internal CPU [[register]]s are available at addresses 777710 -777717.
−
	<!-- which record the CPU's most recent memory operations are also available:		<!-- which record the CPU's most recent memory operations are also available:

@@ Line 54: / Line 54: @@
 {{semi-stub}}
 {{PDP-11}}
-[[Category:UNIBUS PDP-11s]]
+[[Category: UNIBUS PDP-11s]]

@@ Line 9: / Line 9: @@
 The '''PDP-11/34''' was [[Digital Equipment Corporation|DEC]]'s lower-cost replacement to the [[PDP-11/40]] as the low-end [[PDP-11]] system capable of running [[time-sharing]], using [[memory management]]; it had the [[PDP-11 Memory Management|limited memory management]] capabilities of the PDP-11/40, though. It was a [[UNIBUS]] machine; as such, it was normally limited to 248KB of [[main memory]].
-The [[Central Processing Unit|CPU]] came in two variants: the [[KD11-E CPU|KD11-E]] (M7265 and M7266), and the plug-compatible replacement [[KD11-EA CPU|KD11-EA]] (M8265 and M8266).
+The [[Central Processing Unit|CPU]] came in two variants: the [[KD11-E CPU|KD11-E]] (M7265 and M7266), and the plug-compatible replacement [[KD11-EA CPU|KD11-EA]] (M8265 and M8266); machines with the latter were denominated as a [[PDP-11/34A]]. Both required the [[DD11-P backplane]].
 The latter had provision for the [[FP11-A Floating-Point Processor|FP11-A]] [[FP11 floating point|floating point]] unit, and the [[KK11-A Cache Memory|KK11-A]] [[cache]] (the system could use either, or both).