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Path: sserve!manuel!munnari.oz.au!spool.mu.edu!agate!soda.berkeley.edu!wjolitz From: wjolitz@soda.berkeley.edu (William F. Jolitz) Newsgroups: comp.unix.bsd Subject: Re: More booting problems... Message-ID: <14f4n8INNe18@agate.berkeley.edu> Date: 20 Jul 92 19:38:16 GMT Article-I.D.: agate.14f4n8INNe18 References: <1992Jul20.084809.28082@cl.cam.ac.uk> Organization: U.C. Berkeley, CS Undergraduate Association Lines: 34 NNTP-Posting-Host: soda.berkeley.edu In article <1992Jul20.084809.28082@cl.cam.ac.uk> qs101@cl.cam.ac.uk (Quentin Stafford-Fraser) writes: >Sorry, everyone, but I too have totally failed to get Tiny 0.1 to boot. > >I get the banner message with a line just before it saying >something about too little RAM memory (I have 4 meg), and then the > ... This sounds like the 4MB is split in the middle, and I don't know why. (I've been promised some help with the "features" of Vectra's for months know, but it has not shown up. Perhaps the kind promisee on the network can tell me if Vectra's, like some Compaq's, support breaking physical memory into both bottom up (0x100000->n) and top down (<- 0xFFFFFF) segments. This check occurs if it can't find at least a megabyte of extended memory above the base memory. >... >screen blanks before I can read it properly and is replaced with >lots of flashing multi-coloured characters, and then the prompt This is a early shutdown because the kernel stack is invalid (before exception handling is enabled). The multicolored characters may be either parts of the physical page structure (vm_page_t's), or part of the kernel stack itself. > >ptdi 81061 >> This is a diagnostic that indicates that the pagetable directory element is not appropriate for this attempted map operation (pmap_enter). At a guess, could this machine be setup for 512K of base memory instead of 640K? Bill.