Path: utzoo!mnetor!tmsoft!torsqnt!news-server.csri.toronto.edu!clyde.concordia.ca!thunder.mcrcim.mcgill.edu!snorkelwacker.mit.edu!mintaka!ogicse!intelhf!agora!billsey From: billsey@agora.uucp (Bill Seymour) Newsgroups: comp.sys.amiga.hardware Subject: Re: SupraRam 2MB Message-ID: <1990Dec25.230718.22797@agora.uucp> Date: 25 Dec 90 23:07:18 GMT References: <1990Dec19.203304.4043@cs.dal.ca> Organization: Open Communications Forum Lines: 62 In article <1990Dec19.203304.4043@cs.dal.ca> may@ug.cs.dal.ca (Bear) writes: : I am interested in finding out some information on memory boards for :the amiga 500. I have recently just receive my SECOND supra500 2MB board :from creative computing. The first one I installed in the scsi interface (also :made by supra) I receive a number of BIT BAD errors with hex addresses. I sent :this board back to creative computing and they in turn send me a NEW board :that was suppose to be error free. Again I ran the supraRamTest program that :comes with the 2MB board and again I obtained errors, about 1/6 of the :board was bad the rest checked out fine. Sounds like it may be your Supra interface and not the memory board. Whenever you see two different boards with the same problem, look to the common denominator. I know Supra went through a couple of different SCSI board designs on the 500 before making the step to the current XP design, and it may be that older ones have more troubles with expansion memory then the newer ones. I'd call Supra's technical support number and talk to them before proceeding further. (BTW, their number for tech support is (503) 967-9081, 8-4 PST) : I have booted my amiga500 and it recognizes all the memory as being :avaiable, 2MB board and 512K 501. What the Amiga thinks is there, and what is actually there and working can be two completely different things. The Amiga assumes that what the autoconfig logic says is correct. This is normal, even when the memory is not working, unless the portion of the memory that's broken is in the first eight bytes... :My Questions: : 1. Is this normal for memory to have corrupted areas? No. : 2. Do I have to have a Supra HD to run the supra memory.... : ( I ran a +5v power to the board from the Harddrive just like : the manual stated.) You should be able to work just fine as long as you're providing the +5V yourself. I believe on the newest designs, Supra uses the power from the Amiga's bus for the memory board. Possible now that memory uses less power and fewer chips do the same job as before. : 3. Will I suffer from ALOT of ill effects for having corrupted : memory bits. Yes. If the memory isn't working right, you'll tend to crash a lot. Get it fixed. :Please reply if you have expirenece with this sort of work AND could others :with supra 2MB boards tell me their expiriences with this product. : :** __ *********************************************************************** : / ) |IN%"may@ug.cs.dal.ca"| : /--< _ __. __ |---------------------| :/___/_