CompuServe Thread

#Unusual VESA modes

2 messages in this thread
#57317From: Fm: 74022,1013Sep 12, 1993 8:56 AM
Is there a VESA driver that supports 360 X 480 or even better, 320 X 240 resolution (256 colors) that will work with the ATI Wonder 24 EXCEL board? The ATI Board supports 360 x 480 resolution as I discovered when I bought some educational software for my son, 'Dinosaur Adventure.' I use Autodesk's Animator Pro and often use 320 X 200 resolution for animations because it's faster than 640 X 480 and uses less memory–but unfortunately, when I record this to video, the tops and bottoms of the screen are black bars of empty video. I can't fill the screen with 200 lines of vertical resoultion. 240 lines fills the screen nicely. So… Help! Where can I find the appropriate driver? Thanks! Dr. Laurence D. Preble
#57326From: david masonSep 12, 1993 11:49 AM
360×480 and 320×240 aren't VESA modes… they're regular VGA "tweaked" modes, meaning that some clever programmers figured out a way to reprogram the VGA into such strange modes as 320×400, 320×480, 320×240, 360×480, etc. To learn how to do this, look for John Bridges' VGAKIT, which is probably available over in GRAPHSUP, or a book by Michael Abrash called … well, I forget what it's called, but it's a collection of his Programmer's Journal graphics columns. –dkm