Date: Wed, 09 Oct 1996 15:04:33 -0700 From: "Justin T. Gibbs" <gibbs@freefall.freebsd.org> To: Bruce Evans <bde@zeta.org.au> Cc: nate@mt.sri.com, current@FreeBSD.org Subject: Re: SIO problems Message-ID: <199610092204.PAA10944@freefall.freebsd.org> In-Reply-To: Your message of "Thu, 10 Oct 1996 07:48:45 %2B1000." <199610092148.HAA25087@godzilla.zeta.org.au>
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>>I thought this was a problem with the VM system sitting at splhigh() >>too much. I used to get these a long time ago, but they vanished > >It can't be that, because splhigh() doesn't mask "fast" interrupts. > >BTW, there is a problem with the PCI interrupt demultiplexor not >supporting "fast" interrupts. I tried running the cy driver with >"slow" interrupts (a one line change to delate the line that sets >RI_FAST). The (12 byte) fifo was overrun by a factor of about 4 >for every syscons vt switch (because busy waiting is used to set >the LEDs and the LEDs are set at spltty()). Feel free to fix them then. You can also merge the interrupt registration code for all bus types too. 8-) > >Bruce -- Justin T. Gibbs =========================================== FreeBSD: Turning PCs into workstations ===========================================
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