Date: Wed, 31 Jul 1996 16:23:34 -0700 From: "M.R.Murphy" <mrm@Mole.ORG> To: LARRYD@bldg1.croute.com, questions@freebsd.org Subject: Re: reply to Re: Son of Re: irq 12 Message-ID: <199607312323.QAA08253@meerkat.mole.org>
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> > | 5) to get 3 lp's to work, I used an MGP and 2 single LP cheap boards > | and X-acto, solder and wire to change the IRQ on the second single LP. > > Which for me would be a liitle difficult without a schematic 8). It turns out that the ISA bus is well defined in terms of which paddle traces are which signals; we all have the schematic :-). Or we can get it pretty easily. I'm serious about cutting the trace and tacking on a wire to another pad on the paddle (if the interface isn't so inexpensive that it doesn't have the traces). If it's a combo I/O with serial, it'll have the required pads on the paddle. If you don't need the serial, set it up so you have 3,4, and 5 for the irq's of the lpt's. This is all well and good for the occasional fun hardware hack, but it would be a pain for multiple production units. -- Mike Murphy mrm@Mole.ORG +1 619 598 5874 Better is the enemy of Good
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