Date: Tue, 09 Apr 96 09:34:37 PST From: "Brett Glass" <Brett_Glass@ccgate.infoworld.com> To: freebsd-hardware@freebsd.org Subject: Artisoft AE-3 Ethernet card: How to use large buffer? Message-ID: <9603098290.AA829071865@ccgate.infoworld.com>
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Please forgive me if this posting appears more than once; my first one did not seem to get through. I'm running FreeBSD on a machine with an Artisoft AE-3 card -- an NE2000 clone with 64K (rather than the usual 16K) of buffer space. How can I get FreeBSD to recognize, and use, this additional space for transmit (and, especially, receive) buffering? The kernel source, which is almost uncommented, is tough to analyze but suggests that the OS will assume an NE2000-compatible card has 16K of buffering. There's a hint, in the code, that the buffer size can be set by the boot-time kernel configuration program (that is, by booting with the -c option), but it's not clear how one might set it. There's also some conditionaly compiled code having to do with a Gateway Ethernet card. It's not normally compiled in. However, it appears that (if I'm reading it correctly) it *may* test the size of the card's internal RAM. Turning on this option would make the kernel bigger and require recompilation, though, so it wouldn't be as efficient as a boot-time option I could set with -c. I need advice as to how to proceed. Can I use the boot-time kernel configuration (-c) to let the driver know that I have 64K of onboard buffer space? If so, what do I enter? If I *can't* do it via -c, will enabling the Gateway code work? If the latter, I'll need to know if the Gateway code is tested and reliable, and if it will be correctly turned on if I recompile the kernel with "options GWETHER." --Brett
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