DTE20 Ten-Eleven Interface - Revision history

Jnc: /* External links */ +KL10-Based Technical Manual

2023-11-12T11:14:47Z

‎External links: +KL10-Based Technical Manual

Jnc: /* External links */ +decsystem-1080/1090 System Description

2023-11-12T10:46:10Z

‎External links: +decsystem-1080/1090 System Description

Jnc: +cat

2022-11-26T00:25:38Z

+cat

Jnc: minor clarifications

2022-10-27T12:16:45Z

minor clarifications

Jnc: /* External links */ new cat

2022-09-21T18:21:24Z

‎External links: new cat

Vaxorcist: /* Implementation */ Fixed typo

2022-08-24T10:17:14Z

‎Implementation: Fixed typo

Jnc: /* External links */ +Eng drw

2021-10-14T20:58:25Z

‎External links: +Eng drw

Jnc: +boards

2021-10-14T14:58:20Z

+boards

Jnc: An OK start

2021-08-12T14:18:27Z

An OK start

New page

The '''DTE20 Ten-Eleven Interface''' (also called the '''DTE20 Console Processor Interface''') is a [[peripheral]] on [[KL10]] [[Central Processing Unit|CPUs]] which allows a [[PDP-11]] to act as a [[front end]]. Depending on how the DTE20 is configured ('restricted' or 'privileged') , it can be just for off-loading [[input/output|I/O]] functionality to the PDP-11 (both to reduce the load on the main CPU, but also to allow access to the wide range of peripherals supported on the PDP-11), or it can also function as a control and [[diagnostic]] system for the main CPU: loading [[microcode]], [[bootstrap]]ping, etc.

The PDP-11 and KL10 are able to examine each other's [[main memory]] (limited on the KL10 side for restricted DTE20's), and [[interrupt]] each other.

A KL10 may have up to 4 DTE20's, and a PDP-11 may host up to 4 DTE20's on different kL10's.

==Implementation==

The DTE20 is connected to the EBox of the KL10 via the EBus; privileged DTE20's also have access to the KL10's diagnostic bus. To the PDP-11, it appears as a normal [[UNIBUS]] peripheral.

It consists of a number of [[DEC card form factor|hex]] boards plugged into an I/O backplane of the KL10; these are connected to a [[UNIBUS]] connector mounted lower down in that rack, and a [[BC11A UNIBUS cable|BC11A]] cable from the PDP-11 (usually a [[PDP-11/40]]) plugs into that.

==External links==

* [http://www.bitsavers.org/pdf/dec/pdp10/KL10/EK-DTE20-UD-003_Oct76.pdf DTE20 Ten-Eleven Interface Unit Description]
* [http://www.bitsavers.org/pdf/dec/pdp10/KL10/EK-108OU-PD-002_KL10-Based_Physical_Description_Mar77.pdf KL10-Based Physical Description] - contains images of DTE20 backplanes and wiring, pp. 3-7-3-11; board configuration, pp. 3-27,3-28

[[Category: PDP-10s]]

@@ Line 15: / Line 15: @@
 * [http://www.bitsavers.org/pdf/dec/pdp10/KL10/EK-DTE20-UD-003_Oct76.pdf DTE20 Ten-Eleven Interface Unit Description]
 * [http://bitsavers.org/pdf/dec/pdp10/KL10/MP00301_KL10PV_Jun80.pdf KL10-PV Field Maintenance Print Set] - Contains DTE20 on pp. 403-461
 * [http://www.bitsavers.org/pdf/dec/pdp10/KL10/EK-1080U-SD-003_1080_1090_SysDescr_Jan77.pdf decsystem-1080/1090 System Description] (EK-1080U-SD-003) - the DTE20 is covered on pp. 75-76 of the PDF
 * [http://www.bitsavers.org/pdf/dec/pdp10/KL10/EK-108OU-PD-002_KL10-Based_Physical_Description_Mar77.pdf KL10-Based Physical Description] - contains images of DTE20 backplanes and wiring, pp. 3-7-3-11; board configuration, pp. 3-27,3-28

@@ Line 15: / Line 15: @@
 * [http://www.bitsavers.org/pdf/dec/pdp10/KL10/EK-DTE20-UD-003_Oct76.pdf DTE20 Ten-Eleven Interface Unit Description]
 * [http://bitsavers.org/pdf/dec/pdp10/KL10/MP00301_KL10PV_Jun80.pdf KL10-PV Field Maintenance Print Set] - Contains DTE20 on pp. 403-461
 * [http://www.bitsavers.org/pdf/dec/pdp10/KL10/EK-108OU-PD-002_KL10-Based_Physical_Description_Mar77.pdf KL10-Based Physical Description] - contains images of DTE20 backplanes and wiring, pp. 3-7-3-11; board configuration, pp. 3-27,3-28
 [[Category: PDP-10 Machine Interfaces]]
 [[Category: UNIBUS Machine Interfaces]]

← Older revision		Revision as of 00:25, 26 November 2022
Line 18:		Line 18:

	[[Category: PDP-10 Machine Interfaces]]		[[Category: PDP-10 Machine Interfaces]]
		+	[[Category: UNIBUS Machine Interfaces]]

@@ Line 1: / Line 1: @@
-The '''DTE20 Ten-Eleven Interface''' (also called the '''DTE20 Console Processor Interface''') is a [[peripheral]] on [[KL10]] [[Central Processing Unit|CPUs]] which allows a [[PDP-11]] to act as a [[front end]]. Depending on how the DTE20 is configured ('restricted' or 'privileged'), it can be just for off-loading [[input/output|I/O]] functionality to the PDP-11 (both to reduce the load on the main CPU, but also to allow access to the wide range of peripherals supported on the PDP-11), or it can also function as a control and [[diagnostic]] system for the main CPU: loading [[microcode]], [[bootstrap]]ping, etc.
+The '''DTE20 Ten-Eleven Interface''' (also called the '''DTE20 Console Processor Interface''') is a [[peripheral]] on [[KL10]] [[Central Processing Unit|CPUs]] which allows a [[PDP-11]] to act as a [[front end]]. Depending on how the DTE20 is configured ('restricted' or 'privileged'), it can be just for off-loading [[input/output|I/O]] functionality to the PDP-11 (both to reduce the load on the main CPU, but also to allow access to the wide range of peripherals supported on the PDP-11); or it can also function as a control and [[diagnostic]] system for the main CPU: loading [[microcode]], [[bootstrap]]ping, etc.
-The PDP-11 and KL10 are able to examine each other's [[main memory]] (limited on the KL10 side for restricted DTE20's), and [[interrupt]] each other.
+The PDP-11 and KL10 are able to examine each other's [[main memory]] (in a limited way on the KL10 side, for restricted DTE20's), and [[interrupt]] each other.
-A KL10 may have up to 4 DTE20's, and a PDP-11 may host up to 4 DTE20's on different kL10's.
+A KL10 may have up to 4 DTE20's, and a PDP-11 may host up to 4 DTE20's on different KL10's.
 ==Implementation==
-The DTE20 is connected to the EBox of the KL10 via the EBus; privileged DTE20's also have access to the KL10's diagnostic bus. To the PDP-11, it appears as a normal [[UNIBUS]] peripheral.
+The DTE20 is connected to the EBox of the KL10 via the EBus; privileged DTE20's also have access to the diagnostic section of the KL10's Ebus. To the PDP-11, it appears as a normal [[UNIBUS]] peripheral.
 A 'restricted' DTE20 consists of a pair of [[DEC card form factor|hex]] boards (M8552, M8553) and a dual card (M8554), plugged into an I/O backplane of the KL10 (along with the [[RH20 MASSBUS controller|RH20s]]). These are connected to a [[UNIBUS]] connector mounted lower down in that rack, and a [[BC11A UNIBUS cable|BC11A]] cable from the PDP-11 (usually a [[PDP-11/40]]) plugs into that.

← Older revision		Revision as of 18:21, 21 September 2022
Line 17:		Line 17:
	* [http://www.bitsavers.org/pdf/dec/pdp10/KL10/EK-108OU-PD-002_KL10-Based_Physical_Description_Mar77.pdf KL10-Based Physical Description] - contains images of DTE20 backplanes and wiring, pp. 3-7-3-11; board configuration, pp. 3-27,3-28		* [http://www.bitsavers.org/pdf/dec/pdp10/KL10/EK-108OU-PD-002_KL10-Based_Physical_Description_Mar77.pdf KL10-Based Physical Description] - contains images of DTE20 backplanes and wiring, pp. 3-7-3-11; board configuration, pp. 3-27,3-28

−	[[Category: PDP-~~10s~~]]	+	[[Category: PDP-10 Machine Interfaces]]

@@ Line 9: / Line 9: @@
 The DTE20 is connected to the EBox of the KL10 via the EBus; privileged DTE20's also have access to the KL10's diagnostic bus. To the PDP-11, it appears as a normal [[UNIBUS]] peripheral.
-A 'restricted' DTE20 consists of a pair of [[DEC card form factor|hex]] boards (M8552, M85553) and a dual card (M8554), plugged into an I/O backplane of the KL10 (along with the [[RH20 MASSBUS controller|RH20s]]). These are connected to a [[UNIBUS]] connector mounted lower down in that rack, and a [[BC11A UNIBUS cable|BC11A]] cable from the PDP-11 (usually a [[PDP-11/40]]) plugs into that.
+A 'restricted' DTE20 consists of a pair of [[DEC card form factor|hex]] boards (M8552, M8553) and a dual card (M8554), plugged into an I/O backplane of the KL10 (along with the [[RH20 MASSBUS controller|RH20s]]). These are connected to a [[UNIBUS]] connector mounted lower down in that rack, and a [[BC11A UNIBUS cable|BC11A]] cable from the PDP-11 (usually a [[PDP-11/40]]) plugs into that.
 ==External links==