Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!zaphod.mps.ohio-state.edu!think.com!yale!eagle.wesleyan.edu!ttensfeldt From: ttensfeldt@eagle.wesleyan.edu (Thomas Tensfeldt) Newsgroups: comp.sys.atari.st.tech Subject: Re: Ram expansion questions.... Message-ID: <1990Nov13.161833.35717@eagle.wesleyan.edu> Date: 13 Nov 90 21:18:32 GMT References: <7589.273dd7a1@jetson.uh.edu> Lines: 38 In article <7589.273dd7a1@jetson.uh.edu>, rcte2p@jetson.uh.edu (Paul S. Sears) writes: > > I have a question about Ram expansion. I have a 520ST that was expanded to a > total of 1Meg with the Easie ST solderless Ram board by AERCO. I am now > thinking of expanding my ram to 2+ megs. My first question: > > The ram board (bank1 or ST memory) has 2 banks of chip sockets, with currently > 1 set filled to making up 512K which, I was wondering if I went and added more > ram to that extra bank would the board still function properly (thus giving me > a wierd config of 1.5megs total)? BTW, are these 64K-bit or are they 250k-bit > chips? > > I did inquire sometime ago about adding 1mega-bit chips to the board and I > was told that CMOS 511-000 @120ns or better were fine. First, what exactly are > 1M-bit chips and how many are required to make 1Meg ram? 8? What are the > current prices for 1M-bit ram chips and where could I get some? Anyone else > have this particular Ram board and any info on it? > > -- > Paul Sears The Univ. of Houston |"The greater an individual's power I too would be interested because I am in the exact situation that Paul is in. Is Aerco still around? I suppose I should try to call them to find out. Now where is the folder with the boards documentation... Ha I found it...! The infoI have says that you must install 16 TC511000P(120 ns or faster) drams to get a total of 2.5 meg. I guess I ought to buy the ram and try it. However, I seem to remember someone saying this board isn't exactly plug and go. Anyone no anything about this. Thanks... =============================================================================== Tom Tensfeldt Bitnet: TTENSFELDT%Eagle.WESLYN@Wesleyan.Bitnet Internet: TTENSFELDT@Eagle.Wesleyan.Edu 4 Laurel Avenue, Ledyard, CT 06339 (203)-464-9009 Pfizer, Inc., Box 100, Groton, CT 06340 (203)-441-4835 Chemistry Dept, Wesleyan Univ, Middletown, CT (203)-347-9411 X2635 ===============================================================================