Apple has announced the Macintosh II Monochrome Video card. It is a one
bit per pixel (two gray levels) NuBus video card. It is positioned as a
low-cost monochrome video card.
This card was designed to be used with the High-Resolution Monochrome
Monitor. It also works with the AppleColor High-Resolution RGB Monitor, but
this use is not being promoted. This card is not compatible with the
Macintosh II Two-Page Monochrome or Portrait Display monitor.
The pixel display RAM capacity cannot be upgraded on this card.
Technical specifications:
Display Resolution: 640 pixel horizontally by 480 pixel vertically
Connector: 15 pin D-style
Display Mode: 1 bit per pixel only
Output Signal: RS-343 standard with composite synchronization on the
negative going TTL
Raster Rates: Vertical - 66.7 hertz
Horizontal - 35.0 kilohertz
Dot Clock - 30.24 megahertz
Power Consumption: 5 watts