Macintosh II High Resolution Video Card
Physical Specs and Compatibility
The Macintosh II High Resolution Video Card is a 12" NuBus card compatible with 68K- and PowerPC-based Macs running up to Mac OS 8.1. It is not compatible with the Centris/Quadra 660AV. Apple TIL Article #14695 has more details.
The card is unaccelerated. It supports two resolutions, 640 x 480 and 512 x 384, which was the resolution of Apple's 12" color and monochrome displays and was available in two configurations. The 4-bit model supports 16 colors on a 640 x 480 display, 256 colors (8-bit video) on a 512 x 384 display. The 8-bit model supports 8-bit/256-color video on a 640 x 480 display. With an optional RAM upgrade (requires eight 120ns DIP chips), the 4-bit version supports 640 x 480 in 8-bit color.
The High Resolution card is somewhat more useful than the Macintosh II Video Card, but not much.
- Macintosh II High-Resolution Video Card: New Features, Apple Knowledge Base
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