Article 152103 of comp.sys.apple2: Path: news1.icaen!news.uiowa.edu!news.physics.uiowa.edu!hammer.uoregon.edu!newsfeed.direct.ca!newsfeed.berkeley.edu!enews.sgi.com!news.sgi.com!sdd.hp.com!col.hp.com!news.cup.hp.com!not-for-mail From: Dave Tribby Newsgroups: comp.sys.apple2 Subject: Re: OctoRAM Card Information Needed Date: Mon, 30 Aug 1999 16:02:27 -0700 Organization: Hewlett-Packard, Cupertino CA Lines: 102 Message-ID: <37CB0D83.117A@cup.hp.com> References: <280819991008169211%news001@macgeek.org> NNTP-Posting-Host: hpindhx.cup.hp.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 3.01Gold (X11; I; HP-UX B.10.10 9000/715) Xref: news1.icaen comp.sys.apple2:152103 Bryan Villados wrote: > > I'm just now installing an MDIeas OctoRAM card with an OctoRAM ESP card. > > One difficulty I'm running into is upgrading the RAM on the OctoRAM > card. I've installed eight 1MB 30-pin SIMMs (80ns each). The first bank > and second bank are different makes, but they're both running at the > same speed. When I boot my GS up, it only recognizes 4MB. I notice that > there's a block of jumpers on the ram card, but I don't have the > manuals for it. Is there some kind of jumper setting I need to set to > have it recognize all 8MB? This question was asked earlier this month, so I'll post the same reply with improvements suggested by David Empson. (You need to display this with a mono-spaced font.) OctoRAM configuration jumpers The OctoRAM can be loaded with either 256K or 1Meg SIMMs. There can be 1, 2, 4, or 8 SIMMs loaded on the board. Diagram A: shows the physical locations of the jumpers in either the right or left positions for the five switches. Examples: 1 256K SIMM has all switches jumpered to the left; 8 1M SIMMs have all switches jumpered to the right. 256K SIMMs: 1 2 4 8 Switch 1 xxx . xxx . xxx . . xxx 2 xxx . xxx . xxx . xxx . 3 xxx . xxx . xxx . xxx . 4 xxx . . xxx . xxx . xxx 5 xxx . xxx . . xxx . xxx 1M SIMMs: 1 2 4 8 Switch 1 xxx . xxx . xxx . . xxx 2 . xxx . xxx . xxx . xxx 3 . xxx . xxx . xxx . xxx 4 xxx . . xxx . xxx . xxx 5 xxx . xxx . . xxx . xxx Diagram B: shows all possible combinations of left and right settings, and notes which ones are valid lllll llllr lllrl lllrr llrll llrlr llrrl llrrr 256x1 256x2 256x4 ~~~~~ ~~~~~ ~~~~~ 256K 512K 1Meg lrlll lrllr lrlrl lrlrr lrrll lrrlr lrrrl lrrrr 1Mx1 1Mx2 1Mx4 ~~~~ ~~~~ ~~~~ 1Meg 2Meg 4Meg rllll rlllr rllrl rllrr rlrll rlrlr rlrrl rlrrr 256x8 ~~~~~ 2Meg rrlll rrllr rrlrl rrlrr rrrll rrrlr rrrrl rrrrr 1Mx8 8Meg Diagram C: shows the meaning of each switch. Note that switches 2 and 3 must be in the same position LEFT RIGHT Switch 1 SIMMs 5-8 2 \ /256K \ /1 Meg \ 3 / \ parts/ \ parts/ 4 SIMM 1 SIMMs 1-2 5 SIMMs 3-4 > Another problem I'm running into is the ESP card. It's functioning > fine. However, when I copied the PRODOS file and the SYSTEM folder from > the install floppy to the ROM disk (it has Apple II Desktop on it), set > the control panel to boot from ROM disk, then boot from it, the system > crashes when it attempts to load ProDOS-16. I booted from my hard disk > running GS/OS 6.0.1, then attempted to drag the contents of the ROM > disk to the trashcan. When I tried to empty the trashcan, it gave me an > error message saying the disk is damaged (it's still enabled for > read/write). Are there any utilities I could use to test the ROM disk > integrity? You can't fit much on the ESP ROM disk. Perhaps you could verify your setup by creating a floppy with the same files (making sure they take no more space that is used on the ESP), getting it to boot, they formatting the ROM disk and copying the files onto it. You can always use the Finder's "Check file system" and "Verify disk" commands to check the contents of the ROM disk. -- Dave Tribby http://www.educate.net.au/~apple2/software/tribby/