OK so if I understand everyone 1. The problem is the EVGA GT240 Geforce card 2. Either the card is defective or it doesn't properly implement 640x480x16 VGA Graphics 3. I ran several system info programs on the card. They say the card is suppose to support: 640x480x8, 640x480x16, and 640x480x32 VGA. …

This is an unusual request for help. I wrote a program in QuickBasic utilizing full screen Graphics Screen 12 640x480x256 VGA. It works correctly in DOSBox Windows 7 (x86 & x64) but is corrupted in Windows XP DOS Full Screen! The operating systems are in seprate partitions all running on the same …