Date: Wed, 31 May 2000 18:48:23 -0600 From: "Chris Wasser" <cwasser@v-wave.com> To: "freebsd-questions@FreeBSD.ORG" <freebsd-questions@FreeBSD.ORG> Subject: Multiple LPT ports under 4.0-S Message-ID: <200006010048.SAA07317@slash.ab.videon.ca>
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I've gone through older mailing list archives, and it seems I'm not to first one to ask this. Earlier today I tried getting a 4.0-STABLE box to recognize 3 LPT ports, one onboard and 2 lava isa cards: lpt0: io 378 / irq 7 [onboard] - ECP mode lpt1: io 278 / irq 5 [lava isa parallel card] - ECP mode (bidirectional jumper on the card) lpt2: io 3bc / irq 7 [lava isa parallel card] - ECP mode (bidirectional jumper on the card) Now anyone from the 'ol DOS days know this combo works, and I figured it'd work under BSD as well, and was quite surprised to find it didn't. Here's my relevant config: device ppc0 at isa? irq 7 device ppc1 at isa? irq 5 device ppc2 at isa? irq 7 device ppbus device lpt Unfortunately, these lava cards do not allow any other irq other then 5 and 7. Nevertheless, plain 'ol DOS seems them just fine and uses them without a hitch (not win-dos, msdos6.22) Recompiled, and rebooted. BSD saw lpt0 and lpt1 but refused to see lpt2 erroring out with "cannot reserve i/o space". So I hit the manpage for lpt(4) and ppbus(4) and ppc(4) and read up on configuring the devices. So I tried setting them to BIOS probed ports: device ppc0 at isa? port? irq 7 device ppc1 at isa? port? irq 5 device ppc2 at isa? port? irq 7 That didn't work, and reported the same error message, except this time I lost lpt0 in the process as well. So I headed back to the manpages and decided to try polled ports (as I have to use lpt ports as polled devices via lptcontrol(8) otherwise they print really, really, really slowly. Had the same problem under Linux as well many moons ago.. Anyways...) so I tried: device ppc0 at isa? port IO_LPT1 irq 7 device ppc1 at isa? port IO_LPT2 irq 5 device ppc2 at isa? port IO_LPT3 irq 7 This also didn't work, and produced the same results as my first example. All three devices were created in /dev so that wasn't the issue. I then went back to the mailing list archives and tried an example from 3.x releases (which to my understanding with the nlpt device works just fine) device ppbus0 device ppbus1 device ppbus2 device lpt0 at ppbus0 device lpt1 at ppbus1 device lpt2 at ppbus2 device ppc0 at isa? port IO_LPT1 tty irq 7 device ppc1 at isa? port IO_LPT2 tty irq 5 device ppc2 at isa? port IO_LPT3 tty irq 7 This didn't work either. The lpt devices moved up one device number, lpt0 became lpt1, etc. I simply got frustrated and decided to give the mailing list a shot. I'm really surprised this isn't working, but I figured I must be missing something here, so if someone can clue me in, I'd be really grateful. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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