From owner-freebsd-questions Wed Jul 31 15:17:21 1996 Return-Path: owner-questions Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id PAA08959 for questions-outgoing; Wed, 31 Jul 1996 15:17:21 -0700 (PDT) Received: from croute.com (ishm2.croute.com [199.97.106.1]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id PAA08949 for ; Wed, 31 Jul 1996 15:17:17 -0700 (PDT) Received: from bldg1.croute.com by croute.com (4.1/SMI-4.1) id AA01390; Wed, 31 Jul 96 17:17:13 CDT Received: from COMPUROUTE/SpoolDir by bldg1.croute.com (Mercury 1.13); Wed, 31 Jul 96 17:17:01 +600 Received: from SpoolDir by COMPUROUTE (Mercury 1.13); Wed, 31 Jul 96 17:16:55 +600 From: "Larry Dolinar" X-Real-Sender: SUPERVISOR Organization: CompuRoute, Inc. To: questions@freebsd.org Date: Wed, 31 Jul 1996 17:16:52 +600 CDT Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Subject: reply to Re: Son of Re: irq 12 X-Confirm-Reading-To: "Larry Dolinar" X-Pmrqc: 1 Priority: normal X-Mailer: Pegasus Mail v3.22 Message-Id: <98182473F83@bldg1.croute.com> Sender: owner-questions@freebsd.org X-Loop: FreeBSD.org Precedence: bulk | From: "M.R.Murphy" | [...] | > | lpt0 = 0x3bc/7, lpt1 = 0x378/5, lpt1 = 0x278/(upto card) | > | > Indeed you'll see the wee beasties are set accordingly (I hope that last | > 'lpt1' was a typo). | [...] | > lpt0 at 0x3bc-0x3c3 on isa | > lpt1 at 0x378-0x37f on isa | > lpt2 at 0x278-0x27f on isa | | 1) they can't share an interrupt, I'm aware of that -- a little background: the IDE controller is a DTC2278 with all ports except game enabled, parallel is irq7 the other lpts are clone DTC-2280's (right down to the silkscreen and jumper positions) with ONLY parallel ports enabled - lpt1 is irq 5 - lpt2 is not jumpered for an interrupt (only 5 and 7 offered), which I realize does not necessarily imply "no interrupt" | 2) if a stray interrupt occurs and is caught by irq 7 at the | wrong time, it can confuse the lp driver, | 3) I haven't seen 2) above since 1.1.5.1 :-), | 4) try just 0x378/5 and 0x278/{4,3} interfaces as lpt0 and lpt1 if | they'll do it, that is, no irq 7 lp, no shared irq, and only 2 | interfaces, Not an option with the current hardware, but I'll certainly consider better if FreeBSD supports it and it's not too pricey. | 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). | -- | Mike Murphy mrm@Mole.ORG +1 619 598 5874 | Better is the enemy of Good |