Path: utzoo!mnetor!tmsoft!torsqnt!news-server.csri.toronto.edu!cs.utexas.edu!usc!elroy.jpl.nasa.gov!decwrl!csus.edu!ucdavis!iris!zerkle From: zerkle@iris.ucdavis.edu (Dan Zerkle) Newsgroups: comp.sys.amiga.marketplace Subject: Re: YOW! Cheap A3000 RAM found! Message-ID: <8378@ucdavis.ucdavis.edu> Date: 16 Feb 91 06:10:10 GMT References: <8366@ucdavis.ucdavis.edu> <12129@helios.TAMU.EDU> Sender: usenet@ucdavis.ucdavis.edu Reply-To: zerkle@iris.ucdavis.edu (Dan Zerkle) Organization: U.C. Davis - Department of Electrical Engineering and Computer Science Lines: 33 In article <12129@helios.TAMU.EDU> n368bq@tamuts.tamu.edu (Raoul Rodriguez) writes: >I am kinna confused here, could some one please explain the A3000 memory situatin This is a common question. I'm going to write it up (when I have some time) and put it in the frequently asked questions in comp.sys.amiga.introduction (unless someone else wants to). To cover the basics, though: The 3000 has separate areas for CHIP and FAST ram. There are two banks (logical slots holding 8 chips apiece) for the CHIP ram, each of which holds 1 megabyte. This means you get up to two megabytes of CHIP. The FAST ram side has four banks. Each bank can hold either 1 meg or 4 megs, depending on the kind of chips you use. You can not mix up the types. All the banks that have RAM in them must have the same size of RAM. This means that the 3000 has maximums of either 4 or 16 megabytes of FAST ram on the mother board, depending on what kind of chips you use. Counting both the CHIP and FAST ram together, this gives maximums of 6 or 18 megabytes on the motherboard. Note, however, that the 3000 can handle a lot more than that via the card slots. You should not expect ram there to perform very well, however. It is much faster to get to ram on the motherboard, especially if you are using 16-bit ram cards like you find in A2000's. Using one of these will slow down your 3000..... Dan Zerkle zerkle@iris.eecs.ucdavis.edu (916) 754-0240 Amiga... Because life is too short for boring computers.