From: erik quanstrom <quanstro@quanstro.net>
To: 9fans@9fans.net
Subject: Re: [9fans] install onto P5Q-Pro SATA drives
Date: Thu, 18 Mar 2010 10:02:56 -0400 [thread overview]
Message-ID: <36ebbd8b8910e4e02496098cc55b24a4@ladd.quanstro.net> (raw)
In-Reply-To: <54c7627765e27a2ec3dbde1525838bad@hera.eonet.ne.jp>
> > (2) vesa vga driver doen't work for say 1280x1024x16 or x 32 vgasize ( this machine's
> > vga card is ATI Radeon HD 4350(1002/954f). the upper 1/4 part etc...
>
> This is still problem.
there may be some magic overflow crt register bits that
could be set incorrectly. i wonder about vga->crt[0x13].
my reading of the spec several years ago was that it needed
to be
vga->crt[0x13] = (vga->virtx*mode->z)/64;
not
vga->crt[0x13] = ((vga->virtx*mode->z)/8);
this produces output like the table here
http://wiki.osdev.org/VGA_Hardware. but i never finished
testing this.
also, crt[0x18] should be set to 0x3ff, not that it matters.
the extra bit is just ignored.
(see http://www.osdever.net/FreeVGA/vga/crtcreg.htm)
- erik
prev parent reply other threads:[~2010-03-18 14:02 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-10 13:18 kokamoto
2010-03-17 11:22 ` kokamoto
2010-03-17 12:31 ` erik quanstrom
2010-03-17 15:06 ` kokamoto
2010-03-17 15:43 ` erik quanstrom
2010-03-20 7:17 ` EBo
2010-03-18 12:59 ` kokamoto
2010-03-18 14:02 ` erik quanstrom [this message]
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