VT11 Graphic Display Processor - Revision history

Jnc: Link 'resolution'

2024-02-27T10:42:52Z

Link 'resolution'

Larsbrinkhoff: Arguably "pixels" are for raster displays; I sugggest this alternative formulation.

2023-03-16T09:13:08Z

Arguably "pixels" are for raster displays; I sugggest this alternative formulation.

Jnc: /* External links */ +Bitsavers

2022-08-30T19:06:49Z

‎External links: +Bitsavers

Jnc: New cat

2022-06-19T23:40:56Z

New cat

Jnc: A start....

2018-06-07T23:47:42Z

A start....

New page

The '''VT11 Graphic Display Processor''' was a [[vector graphics]] [[video terminal]] from [[Digital Equipment Corporation|DEC]]. It was a [[UNIBUS]] device, which used [[Direct Memory Access|DMA]] to retrieve [[display program]]s from [[main memory]]. It was intended for use with the [[VR14 CRT]] or the [[VR17 CRT]].

It was capable of displaying text (using a built-in [[hardware]] [[character generator]]), vectors (solid, dashed, and dot-dash), and points (relative and absolute); any displayed item can be set to blink. The resolution was 1024x768 [[pixel]]s. The VT11 also supported a [[light pen]].

The VT11 consisted of three [[DEC card form factor|hex-height]] boards: A320 (vector and character generators and [[digital-to-analog converter|D-A convertors]]); M7013 (display processor); and M7014 (UNIBUS interface). They plugged into a custom [[backplane]].

The VT11 used an odd intermediary technique for its character generator; although it was a vector graphics device, for displaying characters, its character generator stored characters as arrays of pixels. To display a character, it did a [[raster]]-like scan over a small part of the screen, and displayed the character in much the same way a raster display does, although the raster scan used vertical strokes, not horizontal, as in a normal raster display.

[[Category: UNIBUS Peripherals]]

@@ Line 1: / Line 1: @@
 The '''VT11 Graphic Display Processor''' was a [[vector graphics]] [[video terminal]] from [[Digital Equipment Corporation|DEC]]. It was a [[UNIBUS]] device, which used [[Direct Memory Access|DMA]] to retrieve [[display program]]s from [[main memory]]. It was intended for use with the [[VR14 CRT]] or the [[VR17 CRT]].
-It was capable of displaying text (using a built-in [[hardware]] [[character generator]]), vectors (solid, dashed, and dot-dash), and points (relative and absolute); any displayed item can be set to blink. The screen grid resolution was 1024x768. The VT11 also supported a [[light pen]].
+It was capable of displaying text (using a built-in [[hardware]] [[character generator]]), vectors (solid, dashed, and dot-dash), and points (relative and absolute); any displayed item can be set to blink. The screen grid [[resolution]] was 1024x768. The VT11 also supported a [[light pen]].
 The VT11 consisted of three [[DEC card form factor|hex-height]] boards: A320 (vector and character generators and [[digital-to-analog converter|D-A convertors]]); M7013 (display processor); and M7014 (UNIBUS interface). They plugged into a custom [[backplane]].

← Older revision		Revision as of 19:06, 30 August 2022
Line 6:		Line 6:

	The VT11 used an odd intermediary technique for its character generator; although it was a vector graphics device, for displaying characters, its character generator stored characters as arrays of pixels. To display a character, it did a [[raster]]-like scan over a small part of the screen, and displayed the character in much the same way a raster display does, although the raster scan used vertical strokes, not horizontal, as in a normal raster display.		The VT11 used an odd intermediary technique for its character generator; although it was a vector graphics device, for displaying characters, its character generator stored characters as arrays of pixels. To display a character, it did a [[raster]]-like scan over a small part of the screen, and displayed the character in much the same way a raster display does, although the raster scan used vertical strokes, not horizontal, as in a normal raster display.
		+
		+	{{semi-stub}}
		+
		+	==External links==
		+
		+	* [http://www.bitsavers.org/pdf/dec/graphics/VT11/ VT11] - documents on [[Bitsavers]]
		+	* [http://www.bitsavers.org/pdf/dec/graphics/VR14/ VR14] - documents on Bitsavers

	[[Category: UNIBUS Display Controllers]]		[[Category: UNIBUS Display Controllers]]

← Older revision		Revision as of 23:40, 19 June 2022
Line 7:		Line 7:
	The VT11 used an odd intermediary technique for its character generator; although it was a vector graphics device, for displaying characters, its character generator stored characters as arrays of pixels. To display a character, it did a [[raster]]-like scan over a small part of the screen, and displayed the character in much the same way a raster display does, although the raster scan used vertical strokes, not horizontal, as in a normal raster display.		The VT11 used an odd intermediary technique for its character generator; although it was a vector graphics device, for displaying characters, its character generator stored characters as arrays of pixels. To display a character, it did a [[raster]]-like scan over a small part of the screen, and displayed the character in much the same way a raster display does, although the raster scan used vertical strokes, not horizontal, as in a normal raster display.

−	[[Category: UNIBUS ~~Peripherals~~]]	+	[[Category: UNIBUS Display Controllers]]