Jnc: proper cat

2020-06-10T01:58:50Z

proper cat

← Older revision		Revision as of 01:58, 10 June 2020
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	[[Image:DRV11-J.jpg\|thumb\|200px\|right\|DRV11-J board]]		[[Image:DRV11-J.jpg\|thumb\|200px\|right\|DRV11-J board]]

	The '''DRV11-J High-Density Parallel Interface''' was a [[QBUS]] [[device controller]] which provided four bi-directional 16-[[bit]] parallel ports. It was a [[DEC card form factor\|dual]] format card (M8049). It used [[programmed I/O]]; the direction of each port was programmable. It was not [[program compatible]] with any other [[Digital Equipment Corporation\|DEC]] parallel port controller.		The '''DRV11-J High-Density Parallel Interface''' was a [[QBUS]] [[parallel interface]] [[device controller]] which provided four bi-directional 16-[[bit]] parallel ports. It was a [[DEC card form factor\|dual]] format card (M8049). It used [[programmed I/O]]; the direction of each port was programmable. It was not [[program compatible]] with any other [[Digital Equipment Corporation\|DEC]] parallel port controller.

	Connection to the [[user]]'s device was via a pair of 50-[[pin]] [[Berg connector]]s; PORTS A and B through the bottom connector (furthest from the insertion handles), ports C an D via the top. Data going out to the user's device was latched in the DRV11-J, so may be read at leisure; data coming in from the user's device was merely sampled by the DRV11-J, so must be held until it has been read.		Connection to the [[user]]'s device was via a pair of 50-[[pin]] [[Berg connector]]s; PORTS A and B through the bottom connector (furthest from the insertion handles), ports C an D via the top. Data going out to the user's device was latched in the DRV11-J, so may be read at leisure; data coming in from the user's device was merely sampled by the DRV11-J, so must be held until it has been read.
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	* [[DRV11 parallel interface]]		* [[DRV11 parallel interface]]

	[[Category: QBUS ~~Peripherals~~]]		[[Category: QBUS Parallel Interfaces]]

Jnc: Basic info

2020-05-15T02:29:44Z

Basic info

New page

[[Image:DRV11-J.jpg|thumb|200px|right|DRV11-J board]]

The '''DRV11-J High-Density Parallel Interface''' was a [[QBUS]] [[device controller]] which provided four bi-directional 16-[[bit]] parallel ports. It was a [[DEC card form factor|dual]] format card (M8049). It used [[programmed I/O]]; the direction of each port was programmable. It was not [[program compatible]] with any other [[Digital Equipment Corporation|DEC]] parallel port controller.

Connection to the [[user]]'s device was via a pair of 50-[[pin]] [[Berg connector]]s; PORTS A and B through the bottom connector (furthest from the insertion handles), ports C an D via the top. Data going out to the user's device was latched in the DRV11-J, so may be read at leisure; data coming in from the user's device was merely sampled by the DRV11-J, so must be held until it has been read.

==Registers==

The device had four pairs of control and [[buffer]] [[register]]s, which could be configured to any eight sequential [[word]] locations in the I/O page. The first DRV11-J was normally configured to [[address]]es 764160-764176; the second to 764140-767756, the third to 764120-767736, and so on.

{| border=1
! Register !! Abbreviation !! Address
|-
|Control and Status Register A || DRCSRA || 764160
|-
|Data Buffer Register A || DRDBRA || 764162
|-
|Control and Status Register B || DRCSRB || 764164
|-
|Data Buffer Register B || DRDBRB || 764166
|-
|Control and Status Register C || DRCSRC || 764170
|-
|Data Buffer Register C || DRDBRC || 764172
|-
|Control and Status Register D || DRCSRD || 764174
|-
|Data Buffer Register D || DRDBRD || 764176
|}


== See also==

* [[DRV11 parallel interface]]

[[Category: QBUS Peripherals]]

DRV11-J High-Density Parallel Interface - Revision history

Jnc: proper cat

Jnc: Basic info