bsave, bload

 BBS: SPOKANE CENTRAL
Date: 07-19-93 (03:58)             Number: 95
From: TIM PETERSON #145 @5930      Refer#: 95
  To: PUBLIC POST                   Recvd: NO  
Subj: bsave, bload                   Conf: (19) QUICKBASIC

  Just do your DEF SEG again
  DEF SEG &hb800
  bload "idiot.bsv"
  DEF SEG

Prbly won't work like you want for a couple of reasons. One is that BSAVE and
BLOAD are limited to 64k, and your image is bigger than that. The other is that
you would only be saving one "plane" of the image. Vga modes use several
"planes" of memory. To access the other planes, you have to send a byte to the
vga card, I think. This is why your palette is screwy.
  I worked around the problem(although not with a full screen) by GETting an
image to an array, then BSAVEing that. Like this:
DIM pic%(howeverbig)
GET (x1,y1)-(x2,y2),pic%
DEF SEG varseg(pic%)
BSAVE "picture",varptr(pic%(0)),howeverbig
DEF SEG

to load it again, just reverse the process;
  DIM pic%(howeverbig)    ' MUST!!! be big enough
  DEF SEG varseg(pic%(0))
  BLOAD "picture",varptr(pic%(0))
  DEF SEG

Better check my syntax. I'll pull some lines from working code if you want. To
find out how to access all the planes, try a book called Supercharged Graphics
in Basic. I saw a routine there.
$$                                  Tim Peterson