From mboxrd@z Thu Jan  1 00:00:00 1970
From: erik quanstrom <quanstro@quanstro.net>
Date: Tue, 13 Oct 2009 10:55:26 -0400
To: 9fans@9fans.net
Message-ID: <38f41db68f29472a007ccd42329418a1@brasstown.quanstro.net>
In-Reply-To: <<2f018e9e8027848c6a35d3d3ee0b1d1c@isd.dp.ua>>
References: <<2f018e9e8027848c6a35d3d3ee0b1d1c@isd.dp.ua>>
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Subject: Re: [9fans] vesa: can't get 1680x1050x32
Topicbox-Message-UUID: 85809496-ead5-11e9-9d60-3106f5b1d025

when trying (unsuccessfully) to get the nvidia driver working
correctly for my card, i wondered if a few registers weren't
slightly off.  i could be wrong and this was a long time ago,
but fwiw:

	vga->crt[0x04] = mode->shs/8 - 1;			/* differs by -1 */
 	vga->crt[0x13] = (vga->virtx/8)*(mode->z/8);
	vga->crt[0x15] = mode->vt - 1;			/* differs by -1 */

the 0x13 register was a particular problem.  with the normal setting,
the cursor just froze up and wouldn't move.

- erik