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Document ID: VLAR-3X8T64 |
8514/A Display Adapter/A - Explanation of 8514/A functionality
Applicable to: World-Wide
The 8514/A card simply provides a high resolution of 1024 X 768 with 16 or 256 colors in this mode, depending on the amount of memory installed on the card. This card works on any Micro Channel system unit that has an adapter slot with the video extension connector. The 8514/A card only functions in that slot because it only has a high resolution processor and not a VGA compatible processor. When the system is running applications in VGA mode (or lesser resolutions) the 8514/A card simply passes the VGA information from the motherboard VGA controller through the Auxilliary Video Extension (AVE). When applications require high resolution, a TSR program called HDILOAD (provided with the adapter) installs the 8514/A Adapter Interface (AI) code. The 8514/A AI is basically a gateway to the 8514/A adapter. Since IBM never published the hardware register information for the 8514/A, all applications had to write to the AI, which in turn writes directly to the hardware on the card. The 8514/A can not function unless it has a video system to supply VGA mode (and lower) video signals.
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Hint Category |
Performance, Compatibility | |
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Date Created |
10-08-98 | |
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Last Updated |
19-11-98 | |
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Revision Date |
18-11-99 | |
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Brand |
IBM Options | |
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Product Family |
Multimedia | |
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Machine Type |
Video | |
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Model |
8514ADP | |
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