flaregun@chopin.udel.edu (Edwin Phillips) (04/09/91)
On a _standard_ VGA card with 256K, it is simple to access the first 64K of the card's memory by writing to segment A000H in the PC memory map. Is it possible to read/write to the rest of the memory on the card? If not, why not? Why is there 256K? What is it used for? What is the other 192K used for? I know that this problem is solved on the super-standard VGA cards by using a special "windowing" register which sets up a 64K window into the card's memory (on the Western Digital card at least). Is there a similar way to access memory in the card that comes with say, a PS/2 Model 30, 50, 70... etc?? Help!?!? Ed /***************************************************************************/ /* Ed Phillips flaregun@chopin.udel.edu It's never impossible, */ /* (128.175.13.17) only highly unlikely. */ /* ed.phillips@mvs.udel.edu */ /* (128.175.13.24) */ /***************************************************************************/ /* University of Delaware Operations and Technical Services */ /***************************************************************************/