Help me

Guest · Post by **Guest** » Sat Dec 28, 2002 10:41 pm

I know that i can save the video buffer of screen 0 with these commands:

DEF SEG = &HB800
BSAVE "BUFFER.DAT", 0, 4000

and then I can load it with:

DEF SEG = &HB800
BLOAD "BUFFER.DAT", 0

Can I do the same in screen 9?
Thanks.

frankiebaby · Post by **frankiebaby** » Sun Dec 29, 2002 8:08 am

I believe that should work for every screen mode, well the general idea, i think u need to use &HA000, at least for screen 13H

GPfault · Post by **GPfault** » Thu Jan 16, 2003 9:20 pm

It will work in ALMOST any video mode.  It won't work in screen 7 or 12 because they have more than one bit plane.  You'll need to figure out how to change the bit plane register.  Find out which OUT port to access.  I used DEBUG to single step the VGA BIOS plotting a pixel, and found out which I/O port to write to.  Screens 7 and 12 are not particularly useful, so I wouldn't bother with them anyway.

Re: Help me

Re: Help me