Graphics formats

 BBS: Inland Empire Archive
Date: 03-25-92 (19:42)             Number: 194
From: ROBBIE CHURCH                Refer#: NONE
  To: CORIDON HENSHAW               Recvd: NO  
Subj: Graphics formats               Conf: (2) Quik_Bas
CH>  VPIC /R works just as well.  BUT if I want to save a screen
CH>  from mode 8-12, I need to do bank switching, where do I
CH>  POKE to swithch the vid mem banks?

This one works for me.  You could also GET the screen into two arrays,
and save them each to a file.  Then save the pallette registers.

SCREEN 9                     'works for EGA, VGA modes 8-12

DEF SEG = &HA000
OUT 974, 4: OUT 975, 0
BSAVE "scrn.blu", 0, 28000   'change the `2800' to the correct value for the
OUT 974, 4: OUT 975, 1       'video mode.
BSAVE "scrn.grn", 0, 28000
OUT 974, 4: OUT 975, 2
BSAVE "", 0, 28000
OUT 974, 4: OUT 975, 3
BSAVE "", 0, 28000
OUT 974, 4: OUT 975, 3

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