View source for DX11-B System 360/370 Channel to PDP-11 Unibus Interface

The '''DX11-B System 360/370 Channel to PDP-11 Unibus Interface''' connects a [[UNIBUS]] [[PDP-11]] to an [[IBM I/O channel]] (selector, multiplexer or block multiplexer [[channel]]) on an [[IBM System/360|IBM 360]] or [[IBM System/370|370]] or compatible machine. On the PDP-11 side, [[Direct Memory Access|DMA]] is used to transfer data.

With appropriate software on the PDP-11, it can emulate (from the point of view of the 360/370) either a 2848 display, or a 2703 or 3705 communications controller.

Like many of the early large [[device controller]]s for the PDP-11, it was a large custom [[wire-wrap]]ped [[backplane]] bolted into the front of a 6' tall 19" inch [[H960 rack]]; into it plugged a large number of small M-Series [[FLIP CHIP]]s. A [[power supply]] and a [[DEC indicator panel]] also mount into the rack.

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==See also==

* [[DX20 Programmed Device Adapter]]

==External links==

* [http://www.bitsavers.org/pdf/dec/unibus/DX11B_PDP-11_to_IBM_360_370_Channel_Interface_Option_Bulletin_1975.pdf DX11B PDP-11 to IBM 360/370 Channel Interface Option Bulletin]
* [http://www.bitsavers.org/pdf/dec/unibus/DEC-11-HDXBA-B-D_DX11-B_Maint_Jul73.pdf DX11-B system 360/370 channel to PDP-11 unibus interface maintenance manual] (DEC-11-HDXBA-B-D)
* [http://www.bitsavers.org/pdf/dec/unibus/EK-DX11AB-MM-002_DX11-B_System_360_370_Channel_to_PDP-11_Unibus_Interface_Maintenance_Manual_Jan76.pdf DX11-8 system 360/370 channel to PDP-11 unibus interface maintenance manual] (EK-DX11AB-MM-002)
* [http://www.bitsavers.org/pdf/dec/unibus/DX11-B_RevP_Engineering_Drawings_Oct74.pdf DX11-B engineering drawings] (Revision P, 10-1974)
* [http://www.bitsavers.org/pdf/dec/unibus/DX11-B_RevAA_Engineering_Drawings_Nov77.pdf DX11-B Engineering Drawings] (Revision AA, 11-1977)
* [http://www.bitsavers.org/pdf/dec/unibus/5408458_ind_panel/dx11.jpg DX11] - DX11 indicator panel (image)
* [http://www.bitsavers.org/pdf/dec/unibus/5408458_ind_panel/dx11ind.jpg DX11] - DX11 indicator panel (captioned diagram)

[[Category: UNIBUS Machine Interfaces]]