DR11-C general device interface - Revision history

Jnc: /* External links */ +manuals, engdrwngs

2022-11-24T21:26:34Z

‎External links: +manuals, engdrwngs

Jnc: move to new subcat

2020-06-09T11:47:50Z

move to new subcat

Jnc: I/O details

2020-05-13T01:30:37Z

I/O details

Jnc: /* Registers */ Define CSR bits

2020-04-16T14:26:11Z

‎Registers: Define CSR bits

Jnc: +image

2019-02-26T00:32:47Z

+image

Jnc: Fairly complete

2018-12-20T13:23:51Z

Fairly complete

New page

The '''DR11-C general device interface''' was a [[UNIBUS]] [[device controller]] which provided a pair of 16-[[bit]] parallel ports, one input, and one output. It was a [[DEC card form factor|quad]] format card (M7860), and used an [[Small Peripheral Controller|SPC]] slot; it used [[programmed I/O]].

Connection to the [[user]]'s device is via a pair of 40-[[pin]] [[Berg connector]]s. A pair of optional single-width paddle cards (M971) may be connected via [[flat cable]]s.

The DR11-C is the replacement for the earlier multi-board [[DR11-A General Device Interface]]. The DR11-C is slightly enhanced over the DR11-A (the -A does not have the CSR1/CSR0 bits).

==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-C is normally configured to [[address]]es 767770-767774:

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

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

===Status Register (DRCSR)===
{{16bit-header}}
| ''REQ B'' || colspan=7 | Unused || ''REQ A'' || INT ENB A || INT ENB B || colspan=3 | Unused || CSR1 || CSR0
{{16bit-bitout}}

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

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

[[Category:UNIBUS Peripherals]]

@@ Line 1: / Line 1: @@
 [[Image:DR11-C.jpeg|thumb|200px|right|DR11-C board]]
-The '''DR11-C general device interface''' was a [[UNIBUS]] [[device controller]] which provided a pair of 16-[[bit]] parallel ports, one input, and one output. It was a [[DEC card form factor|quad]] format card (M7860), and used an [[Small Peripheral Controller|SPC]] slot; it used [[programmed I/O]].
+The '''DR11-C general device interface''' was a [[UNIBUS]] [[device controller]] which provided a pair of 16-[[bit]] [[parallel interface|parallel ports]], one input, and one output. It was a [[DEC card form factor|quad]] format card (M7860), and used an [[Small Peripheral Controller|SPC]] slot; it used [[programmed I/O]].
 Connection to the [[user]]'s device is via a pair of 40-[[pin]] [[Berg connector]]s. A pair of optional single-width paddle cards (M971) may be connected via [[flat cable]]s. Data going out to the user's device was latched in the DR11-C, so may be read at leisure; data coming in from the user's device was merely sampled by the DR11-c, so must be held until it has been read.
@@ Line 44: / Line 44: @@
 | colspan=16 | ''IN15 <-> IN0''
 {{16bit-bitout}}
 [[Category: UNIBUS Parallel Interfaces]]

← Older revision		Revision as of 11:47, 9 June 2020
Line 45:		Line 45:
	{{16bit-bitout}}		{{16bit-bitout}}

−	[[Category:UNIBUS ~~Peripherals~~]]	+	[[Category: UNIBUS Parallel Interfaces]]

← Older revision		Revision as of 00:32, 26 February 2019
Line 1:		Line 1:
		+	[[Image:DR11-C.jpeg\|thumb\|200px\|right\|DR11-C board]]
		+
	The '''DR11-C general device interface''' was a [[UNIBUS]] [[device controller]] which provided a pair of 16-[[bit]] parallel ports, one input, and one output. It was a [[DEC card form factor\|quad]] format card (M7860), and used an [[Small Peripheral Controller\|SPC]] slot; it used [[programmed I/O]].		The '''DR11-C general device interface''' was a [[UNIBUS]] [[device controller]] which provided a pair of 16-[[bit]] parallel ports, one input, and one output. It was a [[DEC card form factor\|quad]] format card (M7860), and used an [[Small Peripheral Controller\|SPC]] slot; it used [[programmed I/O]].

@@ Line 27: / Line 27: @@
 | ''REQ B'' || colspan=7 | Unused || ''REQ A'' || INT ENB A || INT ENB B || colspan=3 | Unused || CSR1 || CSR0
 {{16bit-bitout}}
 ===Output Buffer Register (DROUTBUF)===