From: Paul Brook <paul@codesourcery.com>
To: qemu-devel@nongnu.org
Cc: Steve Ellenoff <sellenoff@hotmail.com>
Subject: Re: [Qemu-devel] How to Simulate hardware that counts scanlines?
Date: Mon, 31 Jul 2006 20:58:54 +0000 [thread overview]
Message-ID: <200607312058.55364.paul@codesourcery.com> (raw)
In-Reply-To: <BAY114-F23F662E9A9618C7D495384BD5C0@phx.gbl>
> Seems nobody here has any ideas either, which is kind of hard to believe. I
> don't know if this would work, but one idea I had was to divide up the gui
> timer into 260 slices (that's the # of scanlines the hardware expects), and
> simply update the hardware register that counts the scanlines this way.
No. The gui timer (in fact the whole display mechanis) is independant of the
emulated VGA hardware. If you need accurate scanline emulation you just treat
it like any other timer.
qemu doesn't currenly provide high-fidelity timer emulation, but that's a
different problem altogether.
Paul
next prev parent reply other threads:[~2006-07-31 20:59 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-31 20:53 [Qemu-devel] How to Simulate hardware that counts scanlines? Steve Ellenoff
2006-07-31 20:58 ` Paul Brook [this message]
[not found] <Pine.LNX.4.64.0608010410410.6869@home.oyster.ru>
2006-08-02 21:47 ` Steve Ellenoff
-- strict thread matches above, loose matches on Subject: below --
2006-08-02 21:28 Steve Ellenoff
2006-08-02 0:48 Armistead, Jason
2006-08-02 9:00 ` Fabrice Bellard
[not found] <200607271342.20917.paul@codesourcery.com>
2006-07-31 20:55 ` Steve Ellenoff
2006-07-27 3:22 Steve Ellenoff
2006-07-28 16:53 ` André Braga
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