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IBM Professional Graphics Controller Card |
The information in this document applies to:
WordPerfect® 5.1 for DOS
Problem
Solutions: Information taken from PC Magazine Vol. 7 No. 13 Introduced in 1984 about the same time as EGA, the Professional Graphics Controller card supported 640 x 480 resolution with 256 colors. It included CGA emulation, but not EGA emulation. The video board took up two slots in an XT or AT. The PGA was mostly used in CADD applications and supported 3-D vector-based drawing functions. The card was supported by most CADD applications but had no mainstream support. The major flaw of the PGA video card is its inability to perform bit-block transfers (bitblts) between microprocessor memory and video memory. Bitblts are used in windowing environments. For example, moving a mouse pointer across a graphics screen requires several bitblts for each new position of the pointer. WordPerfect does not currently have a screen driver for PGC video systems. |
Answer:
Details:
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