Date: Thu, 13 Apr 1995 10:26:17 -0400 (EDT) From: LAJOIE@yalph2.physics.yale.edu To: questions@FreeBSD.org Subject: sony cd driver Message-ID: <01HPACD3IIW095MLRJ@yalph2.physics.yale.edu>
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Does anyone know if the sony cd driver supports interrupts for these devices or does it just use software polling? I recently obtained an interface for my CDU-33A that supports IRQ and under OS/2 the difference was pretty dramatic - multitaking applications were able to continue even under heavy cd-rom access. Anyway, I decided to just give it a shot ... I recompiled my kernel with the line #device scd0 at isa? port 0x230 bio irq 9 vector scdintr and that went fine. On boot, scd0 was found at irq 9 and the drive works fine. However, if I look in scd.c the routine scdintr is an empty routine. Is this something about Unix device drivers that I just don't know? Is the driver still using software polling and my changes to the kernel config are having no effect? Finally, is there a CD benchmark program for FreeBSD? Thanks for the info... John Lajoie Yale University Physics Dept. lajoie@yalph2.physics.yale.edu
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