Path: utzoo!utgpu!watmath!clyde!att!rutgers!mailrus!ulowell!cbmvax!adam From: adam@cbmvax.UUCP (Adam Levin CATS) Newsgroups: comp.sys.amiga Subject: Re: Memory Expansion Keywords: A2000, jumper table Message-ID: <5373@cbmvax.UUCP> Date: 30 Nov 88 16:18:11 GMT References: <85@sns.UUCP> Reply-To: adam@cbmvax.UUCP (Adam Levin CATS) Organization: Commodore Technology, West Chester, PA Lines: 27 Concerning the use of an A2000 1 Meg RAM Expansion card in a B2000: on some B2000s it works, on others it doesn't. No guarantees. The (J1) jumper pins are on the component side of the board and are numbered: ~ | | 2 4 6 8 10 | . . . . . | . . . . . | | 1 3 5 7 9 | ~ ~ | +--------------------------------- |_|_|_|_|_|_|_|_|_ For 512K of RAM (top row empty) short pins 3-4, 5-6, & 7-8 with 3 jumpers. For 1M of RAM (top row filled) short pins 3-4 & 9-10 with 2 jumpers. I personally have not been able to get more that 512K to work, but I think I have a bad RAM chip. == Adam