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Code Issues Releases Activity

vt_vga: When clearing video memory, don't read from it

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The goal is to clear the video memory, in case an application drew to
it. So the content shouldn't be loaded in the latches, it can't be
trusted anyway.

This improves a bit the window switch speed.

MFC after:	1 week
This commit is contained in:
Jean-Sébastien Pédron 2014-08-21 20:10:05 +00:00
parent 02ebdd502d
commit 0c1c6af438
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=270299
1 changed files with 0 additions and 1 deletions
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sys/dev/vt/hw/vga/vt_vga.c
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@ -604,7 +604,6 @@ vga_initialize(struct vt_device *vd, int textmode)
* planes.
*/
for (ofs = 0; ofs < VT_VGA_MEMSIZE; ofs++) {
MEM_READ1(sc, ofs);
MEM_WRITE1(sc, ofs, 0);
}
}