Hi.  I was wondering that if you set the video mode to a 32-bit mode (such as 640x480 in 32-bit color mode), where does the color DAC stay? I mean, in 256 color mode, it is reasonable for the video card to store 768 (256 * 3) byte of color data. In 32-bit mode, there are over a billion colors, where do they all stay?

I never tried to program for 32 bit color, even 16 bit.
VBE int 10h fc 4f01h can give you informations about video memory organisation.

Roland