From: Kevin D. Quitt (KQuitt@ieeinc.com)
Date: Sat 19 May 2001 - 23:16:09 IDT
I'm working with a 65535 with 1M of video RAM. It's at 640x480/256 via VESA mode 101. The actual display is a 320x240 color LCD. I need to be able to show a short sequence of slides rapidly enough for animations to work. The frames are already decoded into bitmap form, and each frame can have a different palette. I was thinking I could use the 640x480 screen as 4 320x240 images, paint into the undisplayed area, and change what quadrant is being displayed (and update the palette) during vertical refresh. I also need to be able to do those latter two based on an interrupt from the 65545 at the start of vertical retrace - I cannot buzz for the status. How do I change the palette the fastest possible way, or is there any chance the 65545 has a second palette? The scroll demo program is vaguely close to what I want to do, except I wouldn't be panning or scrolling anything less than 1/4 of the image, and I need to be changing the palette. This is an embedded system with no MMU; it runs about 33 bogomips. -- _ Kevin D. Quitt KQuitt@ieeinc.com 96.37% of all statistics are made up ------------------------------------------------------------------ Unsubscribe: To: listbot@svgalib.org Body: unsubscribe linux-svgalib
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