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Atari coding BBS
| Re: falcon 320x200 st-mode |
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Posted by: Patrice Mandin
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Feb,07.2005-19:28
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Yes you can use Xbios(5,...) on Falcon. However, when I wrote the Xbios driver for SDL, I use this to setup/restore the video modes on the various systems:
- To check the monitor:
ST,STE: Getrez()
TT: Egetshift()
Falcon: Montype()
- Read current palette, for later restore:
ST,STE: SetColor()
TT: EgetPalette()
Falcon: VgetRGB()
- Read current video mode, for later restore:
ST,STE: Getrez()
TT: Egetshift()
Falcon: saved_vsetmode = Vsetmode(-1)
- To set video mode (do the same when restoring previous video mode):
First, set your screen address with Setscreen(), then set the mode with:
ST,STE: Setscreen()
TT: Esetshift()
Falcon: Vsetmode()
Then call Vsync() to wait for the screen to be setup at next VBL.
- To set the palette:
ST,STE: Setpalette()
TT: EsetPalette()
Falcon: VsetRGB()
Here is some pseudo code:
- Set 320x200x4 bits mode on Falcon (TV/RGB/VGA):
STMODES = $80 ; ST compatible mode
COL80 = 8 ; 80 column mode
COL40 = 0 ; 40 column mode
BPS4 = 2 ; 4 bits per pixel mode
VGA = $10 ; VGA monitor
PAL = $20 ; PAL mode (50Hz), only used for non VGA monitor
monitor = saved_vsetmode & VGA
; You need to keep the monitor bit when you setup a new video mode
freq = saved_vsetmode & PAL (to keep current RGB/TV refresh rate)
; or use freq = PAL (to force 50Hz mode)
; or use freq = 0 (to force 60Hz mode)
Vsetmode(STMODES|COL40|BPS4|monitor|freq)
- Set 320x200x4 bits mode on TT:
EsetShift(0)
Too bad the various Falcon screen enhancers don't have any developper documentation. I have disassembled some, but doc is still to write for various things.
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Topic
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Posted by
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Date
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falcon 320x200 st-mode
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tobe
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Jan,23.2005-00:23
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Re: falcon 320x200 st-mode
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deez
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Jan,23.2005-02:23
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Re: falcon 320x200 st-mode
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tobe
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Jan,23.2005-06:25
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Re: falcon 320x200 st-mode
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mikro
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Jan,23.2005-11:21
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Re: falcon 320x200 st-mode
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tobe
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Jan,23.2005-13:13
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Re: falcon 320x200 st-mode
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gwem
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Jan,24.2005-12:37
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Re: falcon 320x200 st-mode
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evil
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Jan,24.2005-15:09
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Re: falcon 320x200 st-mode
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gwem
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Jan,24.2005-16:15
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Re: falcon 320x200 st-mode
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earx
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Jan,25.2005-11:16
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Re: falcon 320x200 st-mode
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tobe
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Jan,27.2005-14:55
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Re: falcon 320x200 st-mode
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earx
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Jan,27.2005-15:47
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Re: falcon 320x200 st-mode
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Patrice Mandin
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Feb,07.2005-00:35
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Re: falcon 320x200 st-mode
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Leonard
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Feb,07.2005-12:34
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Re: falcon 320x200 st-mode
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earx
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Feb,07.2005-14:11
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Re: falcon 320x200 st-mode
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Patrice Mandin
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Feb,07.2005-19:28
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Re: falcon 320x200 st-mode
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earx
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Feb,07.2005-23:55
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Re: falcon 320x200 st-mode
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Patrice Mandin
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Feb,08.2005-11:06
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Re: falcon 320x200 st-mode
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earx
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Feb,07.2005-14:08
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What's the anti-troll code?
That's your personal code to be able to add comments and messages on the dhs.nu site.
Don't have a code or forgot it? Fix it here.
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