Jnc: /* External links */ +manual

2022-11-24T19:31:24Z

‎External links: +manual

Jnc: move to new subcat

2020-06-09T11:48:54Z

move to new subcat

Jnc: Reasonably complete

2019-02-25T14:42:40Z

Reasonably complete

New page

[[Image:DR11-K.jpeg|thumb|250px|right|DR11-K board]]

The '''DR11-K general device interface''' was a [[UNIBUS]] [[device controller]], very similar in functionality to the [[DR11-C parallel interface]], but with more robust [[analog]] [[interface]] specifications.

Like the DR11-C, it provided a pair of 16-[[bit]] parallel ports, one input, and one output; and used an [[Small Peripheral Controller|SPC]] slot. It also used [[programmed I/O]]. It was, however, a [[DEC card form factor|hex]] format card (M7843)

Connection to the [[user]]'s device is via a pair of 40-[[pin]] [[Berg connector]]s.

==Registers==

The device has three control and [[buffer]] [[register]]s, which can be configured to any three sequential [[word]] locations in the I/O page; the first DR11-K is normally configured to [[address]]es 767770-767774:

{| border=1
! Register !! Abbreviation !! Address
|-
|Status Register || DRSR || 767770
|-
|Input Buffer Register || DROUTBUF || 767772
|-
|Output Buffer Register || DRINBUF || 767774
|}

The order of input and output buffer registers is inverted from that of the DR11-C, for unknown reasons.

In the register contents (below), bits which are read/write or unused are shown in normal font, those which are write-only are in ''italics''.

===Status Register (DRSR)===
{{16bit-header}}
| OUT FLAG || OUT INTR ENB || ''SET INTR OUT'' || colspan=5 | Unused || IN FLAG || IN INTR ENB || ''SET INTR IN'' || colspan=5 | Unused
{{16bit-bitout}}

===Output Buffer Register (DROUTBUF)===
{{16bit-header}}
| colspan=16 | OUT15 <-> OUT0
{{16bit-bitout}}

===Input Buffer Register (DRINBUF)===
{{16bit-header}}
| colspan=16 | IN15 <-> IN0
{{16bit-bitout}}

[[Category:UNIBUS Peripherals]]

← Older revision		Revision as of 11:48, 9 June 2020
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−	[[Category:UNIBUS ~~Peripherals~~]]	+	[[Category: UNIBUS Parallel Interfaces]]

@@ Line 39: / Line 39: @@
 | colspan=16 | IN15 <-> IN0
 {{16bit-bitout}}
 [[Category: UNIBUS Parallel Interfaces]]

DR11-K parallel interface - Revision history

Jnc: /* External links */ +manual

Jnc: move to new subcat

Jnc: Reasonably complete