Date: Fri, 22 Mar 1996 10:56:56 -0700 (MST) From: Stephen Mathezer <mathezer@newera.ab.ca> To: questions@freebsd.org Subject: Help. Adding memory broke my machine Message-ID: <Pine.HPP.3.91.960322104613.3696K-100000@feisal.newera.ab.ca>
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I have a no name 486-66 VLB motherboard. It has 4 30 pin and 2 72 pin slots for memory. Up to this point I've been happily running 2.1 release with 16M of memory (4 30 pin simms). I recently got an additional 8M 72 pin simm. The instructions for the board say that I can not have all 6 memory slots filled but that 4 30 pin and 1 72 pin simm a supported configuration. Indeed, Windows 95 works fine with the added memory, however FreeBSD does not. It actually performs much slower than with 16 M than with 24M or memory. Plus as soon as I try to do anything in X and I presume anything more intensive in general I get sig 10s and sig 11s all over the place. I turned off all shadow in the BIOS to no avail. There are also two other configurable options in the BIOS: External Cache (secondary cache memory) and Internal Cache (CPU internal cache). If I turn both of these off then things work but they of course work slower than they did with 16M of memory with caching on. For what its worth, I have BOUNCE_BUFFERS enabled in the kernel. I don't know that I can tell you very much about the board. The only reference to an actual name in the manual is as "The 80486 Deep Green mainboard" Can anybody give me any ideas for what I can do to make this thing work with the extra memory? If you need more information tell me what to do to provide it. Oh yeah, I did try removing all the 30 pin memory and using 2 72 pin simms and that configuration was OK. I guess I should have tried it with just 1 72 pin simm but I didn't think of it at the time. Thanks for any help -Steve
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