Date: Mon, 3 Jul 2000 21:53:53 +0100 (BST) From: Doug Rabson <dfr@nlsystems.com> To: Mark Abene <phiber@radicalmedia.com> Cc: Doug Rabson <drabson@yahoo.co.uk>, "Andrew M. Miklic" <miklic@ibm.net>, freebsd-alpha@freebsd.org Subject: Re: Parallel Port/Printer diffs! Message-ID: <Pine.BSF.4.21.0007032150480.32480-100000@salmon.nlsystems.com> In-Reply-To: <20000620190629.C23157@radicalmedia.com>
index | next in thread | previous in thread | raw e-mail
On Tue, 20 Jun 2000, Mark Abene wrote: > Good news everyone. Working with Andrew Miklic's patches, I've created diffs > to 4.0-RELEASE which add support for the parallel port. I've also written > the requisite ppc_smc37c935_detect routine for those of us with Super I/O > chips (EB/PC164, etc.), so we can use ECP/EPP. Even the parallel port ZIP > drive works! I'm using mine right now. The diffs include a patch to the > GENERIC kernel config to enable the ppc driver. This should work on all > alphas. If you have the Super I/O chip in your machine, add the option > PPC_PROBE_CHIPSET to your kernel config, and be sure to specify the io port > and flags to the "ppc" driver line. My detect routine will tell the Super > I/O chip to relocate the parallel port to the io address you specify, and > set the mode according to the flags (if there are any). The default setting > is port 0x3bc in centronics compatible mode, but using my Super I/O support > you can relocate it to 0x378 and take advantage of EPP or ECP mode. > The man page for ppc breaks down what the flags are. To get the vpo zip drive > driver working, I'm using: > > device ppc0 at isa? port 0x378 irq 7 flags 0x17 > > for EPP 1.7 + PS2 + NIBBLE mode. Of course you'll also need to enable scsi > support. You'll also want to enable the scsi pass device, so you can use > camcontrol to eject zip disks. > > That's all for now, you'll find the diffs attached to this message. > Any questions, feel free to ask. I didn't realise until today that you were working from 4.0-RELEASE. This complicates things since you are implementing a few things differently from the way the driver works in 5.0-current. What I would really like to see is a port of your smc37c935 bits to the version of ppc.c in 5.0-current followed by a merge of everything back in to the 4.x branch. I'd like to minimise the diffs between 5.0 and 4.x as much as possible (which seems doable). -- Doug Rabson Mail: dfr@nlsystems.com Nonlinear Systems Ltd. Phone: +44 20 8442 9037 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the messagehome | help
Want to link to this message? Use this
URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.BSF.4.21.0007032150480.32480-100000>