Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!utgpu!water!watnot!watmath!clyde!rutgers!sri-unix!hplabs!hp-sdd!ncr-sd!ncrcae!usceast!tech From: tech@usceast.UUCP Newsgroups: comp.sys.atari.st Subject: Re: An external RAM disk for the ST Message-ID: <2326@usceast.UUCP> Date: Mon, 23-Feb-87 15:48:43 EST Article-I.D.: usceast.2326 Posted: Mon Feb 23 15:48:43 1987 Date-Received: Thu, 26-Feb-87 22:36:40 EST References: <687@vaxwaller.UUCP> <2315@felix.UUCP> Reply-To: tech@usceast.UUCP (Bill Wood) Organization: Csci Dept, U of S. Carolina, Columbia Lines: 23 In article <2315@felix.UUCP> preston@felix.UUCP (Preston L. Bannister) writes: >> I have a plain vanilla 520 ST, and a product I'd be interested in >>is an external RAM disk. Something I could hook up to the cartridge port > >There is no way a product like this is going to cost significantly >less than a hard disk. The memory is relatively cheap, but once you >add the case, power supply and interface logic it's going to cost you >nearly as much (or more) than a hard disk. > But I have to disagree, The cartridge port will support a ramdisk without the power supply and a cheap plastic case only costs a couple of bucks. Since I am writing this on a 1Meg system with a Ramdisk in the cartridge port. That is, with a total of 1.5Meg of ram. I agree that it CAN be expensive however the harddisks that are available for the ST all seem to use steppers for the head positioner and are very slow compared to the voice coil units which cost twice as much. I do alot of compiling using the MW compiler and the ramdisk speeds it up wonderfully. The fact is that if you are usually using just one enviornment 3 or 4 megs of ram in place of a harddisk is an ideal solution. Remember that whenever you access a HARD Disk that the DMA channel cannot be used for screen updates. With a ramdisk this can be worked around. Bill Wood.