Date: Thu, 29 Feb 1996 01:13:36 +1100 (EST) From: michael butler <imb@scgt.oz.au> To: terry@lambert.org (Terry Lambert) Cc: current@freebsd.org Subject: Re: Opti 82C895 cache coherency ? Message-ID: <199602281413.BAA01656@asstdc.scgt.oz.au> In-Reply-To: <199602272059.NAA05791@phaeton.artisoft.com> from "Terry Lambert" at Feb 27, 96 01:59:01 pm
next in thread | previous in thread | raw e-mail | index | archive | help
Terry Lambert writes: > > > Does it work with cache disabled? > > Nope. > L1 an L2 both disabled? > Peculiar... Yup .. either or both :-( > > Fortunately, there are three documented (!) in the manual but, of > > course, I only want one. If I use "master slot 1" it won't boot. If I > > use either slot labelled "master slot 0", it will but then it won't talk > > to the ethernet card (WD8013EPC, 0x280, 5, 0xd8000) :-( It simply hangs > > in (NFS) mounting some shared directories. > Clearly, you only have one master slot. The ethernet card needs to be > relocated. Sorry ? I don't follow the "ethernet .. relocated", it's ISA and works with the BT542B it doesn't matter which slot it's in. I've moved every card to different slots .. no joy. It appears as if it is transmitting packets but not hearing the responses. I can see the little yellow TX led blink every now and again when it's trying to talk. > Try jumpering additional wait states and see if it is a DRAM refresh > problem. I've tried everything available on the board(s) and BIOS .. it simply will not fly :-( :-(. There are a couple of jumpers for VESA timing (marked 0/1 wait states and <=33MHz/>33MHz), they make no impact on the problem. > > If, however, I replace the 2842 with a Buslogic 542B (ISA) and reboot > > with an older version of -stable, it will fly quite happily even if > > strangled on disk I/O. I am assuming that a cache problem would exhibit > > some symptoms with this card as well. > No. The problem is specific to the cache notification pin of the VLB. ISA > will work correctly. >From the looks of it, it's not a cache problem but some other interaction between the 2842 and the WD8013EPC in this design of this board .. it's going back to the people I got it from :-( Another "bad" board for the (SCSI) FAQ .. michael
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199602281413.BAA01656>