Apple PC Compatibility Card - Manual (Page 296)

296 Appendix D
DRAM accelerator mode (WINBOOST)
The following table lists color depths and other features supported at various
monitor resolutions in graphics mode. The settings listed in this table can be
applied to multiscan monitors only.
Refresh Horizontal Pixel clock Maximum color
Resolution rate (Hz) frequency (kHz) (MHz) depth (bpp)*
640 x 480 60 31.4 25.2 24, 32 †
72 37.7 31.2 24, 32
75 37.5 31.5 24, 32
90 47.9 39.9 16, 32
100 52.9 44.9 16, 16
120 63.7 55.0 —, 16
800 x 600 48 interlaced 33.8 36.0 16, 24
56 35.1 36.0 16, 24
60 37.8 40.0 16, 24
70 44.5 44.9 16, 32
72 48.0 50.0 16, 16
75 46.8 49.5 16, 16
90 57.0 56.6 8, 8
100 62.5 67.5 8, 8
120 76 81 —, 8
*In the “Maximum color depth” column, the first number is the bits per pixel supported at 1 MB DRAM, the second
number is the bits per pixel supported at 2 MB DRAM. A dash (—) means the color depth is not supported in that
DRAM configuration.
† 32 is 24 bpp color data processed using a 32 bpp data format.
continued .