Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!van-bc! From: lphillips@lpami.wimsey.bc.ca (Larry Phillips) Newsgroups: comp.sys.amiga.hardware Subject: Re: Will a 3000 run with just chip memory? Message-ID: <2292@lpami.wimsey.bc.ca> Date: 1 Dec 90 00:34:40 GMT Lines: 47 Return-Path: To: van-bc!rnews In , abair@turbinia.sps.mot.com (Alan Bair) writes: >However, I need a larger continuous section of memory NOW. I am trying to use >GNU emacs and GCC, either of which needs LARGE chunks of memory. So I have >some questions about how to solve my current problem until I get the extra 4MB. > >1. I can run nofastmem, which allows emacs to run by going to the chipmem, but > I appear to be loosing the .5MB of fastmem. The workbench titlebar and > avail indicate that after running nofastmem, that the fastmem is just > turned off and no longer available. Is this what is and should be > happening or am I misinterpreting the displays? This does work, but > not very optimal, since I loose the .5MB. This is what NoFastMem does. It is not a directive to not use the fast mem, but rather a switch to turn it off and make it unavailable. >2. I could move all the memory to the chipmem area, but will the 3000 still > boot and run in this configuration? I know it will be slower since > there will be no fastmem, but I will at least have 2MB of continuous > memory now, though it will be short by .5MB for the OS. This will give > me a single larger chunk of memory as compared to option #1. The 3000 will not (currently) boot in an all CHIP configuration. The reason for this is that the KS code is hardwired to load into a high address in FAST memory. >3. Is there some other software method to join the chip and fast memory areas > into a single logical chunk of memory? I looked at SetCPU, but I don't > think it will do what I want. Not that I know of. >Any suggestions or hints would be appreciated. (I will even accept information >about good sources for 1Mx4 80ns static column DIPs) As a temporary measure, you might want to go with 2 megs of FAST memory in the 256*4 package. It's cheaper in the short run, but probbaly more expensive in the long run, when you sell them to go to the 4 meg parts. -larry -- The only things to survive a nuclear war will be cockroaches and IBM PCs. +-----------------------------------------------------------------------+ | // Larry Phillips | | \X/ lphillips@lpami.wimsey.bc.ca -or- uunet!van-bc!lpami!lphillips | | COMPUSERVE: 76703,4322 -or- 76703.4322@compuserve.com | +-----------------------------------------------------------------------+