Date: Sun, 22 Apr 2001 22:47:51 -0700 From: Richard Johnson <raj@cisco.com> To: freebsd-questions@freebsd.org Subject: Re: tw0 (ppc0) on Thinkpad 755c? Message-ID: <15075.49671.105680.878911@kitab.cisco.com> In-Reply-To: <15075.38064.91164.939135@kitab.cisco.com> References: <15075.38064.91164.939135@kitab.cisco.com>
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Richard Johnson writes: > I'm trying to get the tw0 device to work on an old Thinkpad 755c > system. I built a kernel with the device defined. It just can't seem > to find the parallel port. I know it's at irq 7, but I don't know the > iobase address. Another laptop I have has it at irq 7 and iobase > 0x378, but that doesn't seem to work on the Thinkpad. > > I know my cable and X10 controller box work correctly because I've > used it with FreeBSD on a different laptop. > > Is there something special about the parallel port on the Thinkpad > 755c? Is there some place I can find hardware information like this? > > Any help would be greatly appreciated! > > /raj As a followup, I found that by booting the GENERIC kernel with "-v", it actually reports the location of ppc0. I found it at 0x3bc instead of the usual 0x378. I have now moved it to 0x278 and yet tw0 still doesn't probe it correctly: ppc0: using extended I/O port range PC873xx probe at 0x26e got unknown ID 0x4b ppc0: SPP ppc0: <Parallel port> at port 0x278-0x27f irq 7 drq 0 on isa0 ppc0: Generic chipset (NIBBLE-only) in COMPATIBLE mode ppbus0: IEEE1284 device found /PS2/EPP/NIBBLE_ID/PS2_ID/Extensibility Link Probing for PnP devices on ppbus0: ppbus0: <unknown unknown> isa_compat: didn't get ports for tw isa_compat: didn't get drq for tw tw0 failed to probe at port 0x278 irq 7 drq 0 on isa0 Has anyone seen this before? Maybe the tw driver doesn't work with 4.3? /raj To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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