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On Thu, 11 Jul 1996, Gabor J.Toth wrote: > > Since then, Bjoern reports he's gotten the latest XFree86 alpha driver > > to work in 16-bit and 24-bit modes. The 16-bit is displaced by about > > 40 pixels on the LCD, and the 24-bit mode flickers, but they work for > > him. > > Is it still a palette of 256 colors only? Or is there any way to get > more then 256 colors on your screen? The hi-color modes have no palette, palette being defined as a set of colors from which a smaller number may be displayed simultaneously. (S)VGA cards use a lookup table to assign a certain color from the 262,144 color (18 bit) VGA palette to each of 256 color slots. 16-bit mode can display 65,536 colors simultaneously. 24-bit mode could display 16,777,216 colors simultaneously if you had that many pixels on your screen. Both of these modes will do >256 colors with ease. The 16-bit mode will actually be *poorer* than 8-bit (256 color) mode if you're using 256 or fewer shades of the same color. 16-bit mode assigns 5 bits to RB and 6 bits to G. 8-bit uses a palette based on 8 bits for all RGB. If you're only using 256 shades, the 8-bit mode can do finer gradiation. -- John H. Kim "I stop for red traffic lights" -- bumper sticker jokim@mit.edu commissioned by the City of Boston as part of a MIT Sea Grant campaign to shed its reputation for bad drivers.