home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.sys.ibm.pc.soundcard
- Path: sparky!uunet!usc!howland.reston.ans.net!sol.ctr.columbia.edu!news.columbia.edu!cunixb.cc.columbia.edu!stc7
- From: stc7@cunixb.cc.columbia.edu (Steven T Chiang)
- Subject: Re: Will these RAM chips work on my GUS?
- Message-ID: <1992Dec17.003901.21817@news.columbia.edu>
- Sender: usenet@news.columbia.edu (The Network News)
- Nntp-Posting-Host: cunixb.cc.columbia.edu
- Reply-To: stc7@cunixb.cc.columbia.edu (Steven T Chiang)
- Organization: Columbia University
- References: <1gmfkeINNjbu@aludra.usc.edu> <MORGAN.92Dec16150001@dl5000.bc.edu>
- Date: Thu, 17 Dec 1992 00:39:01 GMT
- Lines: 33
-
- In article <MORGAN.92Dec16150001@dl5000.bc.edu> morgan@dl5000.bc.edu (Morgan Stair) writes:
- >
- > I'd like to upgrade my GUS to 1 meg of RAM just for the heck of it,
- > and was wondering if the chips from my ol' XT will work. I don't want
- > to blow up my Ultrasound right after I got it, I'd like to wait a year
- > or two :) Here's a picture of a typical RAM chip on it:
- >
- > _/\_/\_/\_/\_/\_/\_/\_/\_/\_
- > | ---+--- JAPAN 8616ACK |
- > | | |
- > ) | |
- > | | TMN41256P-15 |
- > |_ _ _ _ _ _ _ _ _ _|
- > \/ \/ \/ \/ \/ \/ \/ \/ \/
- >
- >I don't thinks so. The -15 almost certainly means 150ns. You need
- >100's (-10) or less. I put 6 80ns chips for $4 apiece. Check in the
- >back of computer shopper. I don't know what the 41 stands for, but I
- >know 44256 are 4bitx256K chips (which is what you need).
-
- Yeah, those are definitely 150 ns chips.
-
- The 41256 is a 256 x 1 chip (ie. 8 chips to 256 k), whereas the 256x4
- chips is 2 chips per 256k, 8 chips to a meg.
-
- I guess I'm lucky, my current ram cards uses 256 x 4 chips... :)
-
- >* W. Morgan Stair Phone: (617) 552-8783 *
-
- Steven Chiang Order - DreamGrafix: The ONLY 16/256/3200
- stc7@cunixb.cc.columbia.edu color paint program for the Apple IIGS.
- America On_Line: DWS Steve
- Genie: S.Chiang4 Apple IIGS Forever!
-