Re: Problems with grfconfig and PicassoIV

[Lars Hecking <lhecking%nmrc.ie@localhost>]

> Yesterday I got also grfconfig dumping core when tried to feed it options
> from resolution file exported from Picasso96Mode from AmigaOS side.
> I just got another monitor and made new settings for it. Letters also
> started flicker on NetBSD console and I don't mean that I used interlaced
> mode. There is some garbage on screen that flickers away and back to
> visible.

 Re: flicker

 Probably completely unrelated, but here goes: I have a Spectrum, which uses
 the same driver as the Picasso, and the console is flickering noticably. As
 this doesn't happen on OpenBSD, I compared the two clgen drivers, and while
 noticing that OBSD needs an upgrade badly (need to test my changes later :),
 I found some interesting differences. In particular, applying the following
 patch to /dev/grf_cl.c makes the console screen much more stable. The only
 side effect is that the backround is now (almost) black. I would be interested
 to hear whether other CL based boards show an improvement, too.

--- grf_cl.c.orig       Wed Dec  6 02:10:05 2000
+++ grf_cl.c    Wed Dec  6 01:58:50 2000
@@ -145,7 +145,8 @@
 extern unsigned char CIRRUSFONT[];
 
 struct grfcltext_mode clconsole_mode = {
-       {255, "", 25000000, 640, 480, 4, 640/8, 680/8, 768/8, 800/8,
+/*     {255, "", 25000000, 640, 480, 4, 640/8, 680/8, 768/8, 800/8, */
+       {255, "", 28200000, 640, 480, 4, 640/8, 752/8, 792/8, 832/8,
         481, 490, 498, 522, 0},
        8, CIRRUSFONTY, 80, 480 / CIRRUSFONTY, CIRRUSFONT, 32, 255
 };