Difference between revisions of "VCB01 Video Controller"
From Computer History Wiki
m (Add some links, category) |
('M7602' is not a 'DEC part number') |
||
| Line 1: | Line 1: | ||
| − | The '''VCB01 Video Controller''' is a [[DEC card form factor|quad]]-height, 22 bit [[QBUS]] [[bit-mapped display]] option module ( | + | The '''VCB01 Video Controller''' is a [[DEC card form factor|quad]]-height, 22 bit [[QBUS]] [[bit-mapped display]] option module ('''M7602'''), providing [[workstation]] capability for Q22-bus systems. |
The bitmap memory (also called video memory), is 256 kB of [[Metal Oxide Semiconductor|MOS]] [[RAM]], residing in the Q22-bus address space. | The bitmap memory (also called video memory), is 256 kB of [[Metal Oxide Semiconductor|MOS]] [[RAM]], residing in the Q22-bus address space. | ||
Revision as of 15:47, 23 June 2022
The VCB01 Video Controller is a quad-height, 22 bit QBUS bit-mapped display option module (M7602), providing workstation capability for Q22-bus systems.
The bitmap memory (also called video memory), is 256 kB of MOS RAM, residing in the Q22-bus address space.
In the VAXstation I and VAXstation II, a subset (sometimes called the screen memory) of the bit-mapped video memory is displayed on a 48 cm (19 in) monochrome monitor (the VR100 Monochrome Monitor).
The VCB01 relies on the CPU to generate all images stored in video memory.
The VCB01 also provides several basic I/0 functions, including:
