Jonathan Metts <[EMAIL PROTECTED]> wrote: >OK, the headaches continue. I have experimented as suggested below >with some success in getting things to work. I have removed the 8MB >module, and everything boots up fine. My system was the 117 variety >and bringing the RAM down to 56MB seemed to have done the trick. > >As disappointed as I am with the thought that I can't get the full 64 >MB, I can survive with 56. I have just run into the other problem >mentioned below. Although I am running fine with the 56MB, this is all >with the Sonnet extension off. Once I turn it on, I get constant >freezes. No errors, just freezes. This is another issue I was hoping >to resolve by more RAM, but it is acting just as before. Is this a RAM >issue? A 117 logic board issue? Or what? > >How many people are able to get a 1400 with an upgrade to work with the >Sonnet extension? What logic board do you have, what upgrade variety >do you have, how much RAM, what OS are you running, and lastly, what >version of the extension. I have 1.4.5, 2.0.1, 2.0.2, and 2.0.3, and >have tried all with no success.
I've been doing more extensive testing of ram as part of my ram module mods 'program' and I can provide some additional relevant results. I've been using a 117 LB and a 333/512 Sonnet, plus 3 8MB factory-slot modules (FSM) in addition to the various 24MB modules. I have 2 24MB modules (1 each RMR and cubig) that together with any of the FSMs will boot with the Sonnet extension enabled and without giving a memory-error dialog (MED). Interestingly, this combo _will_ give a MED if arraigned one way, but won't if arrainged the other. All other 24mb modules I have are from my huge lot of generic 24s and are identical to each other (but completely different from the RMR and cubig modules.) _None_ of these can be used with the Sonnet extension enabled (tried v1.4.5 and v2.0.3), else a hard lockup ensues. Since the Sonnet extension _did_ work with one module set, I reckon the init, or more likely, the processor and/or its cache is sensitive to some quality of the user ram modules. Probably the only solution is module replacement from a solid supplier such as Kingston or DMS. I'd be curious to know what (if anything?) Sonnet has to say on the subject of 1400 ram compatibility with their upgrades. <Hacker section> As for my ram module mods testing, I found that changing the RAS lines' resistor values _did_ have an effect on whether or not a module gives the dreaded memory-error dialog on startup. On these modules the original value is 22 ohms. I tried a number of alternatives from 15 ohms to 200 ohms and found the memory-error dialogs disappeared at the 84 ohm level. However those 84 ohm modules locked up once at the Finder. The next higher value of 100 ohms gave no MED and appears to be working fine so far. All values seemed to boot and work OK _without_ an 8MB FSM in place. This is still preliminary testing but I'm encouraged by the results so far. </Hacker section> Eliminating the MED had no effect on the Sonnet extension lockup, in case I wasn't clear about that above. Dan K ................................. http://macdan.n3.net/ carracho://dankephoto.dhs.org:9700 hotline://dankephoto.dhs.org:9500 ................................. -- PowerBooks is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Enter To Win A | -- Canon PowerShot Digital Cameras start at $299 | Free iBook! | Support Low End Mac <http://lowendmac.com/lists/support.html> PowerBooks list info: <http://lowendmac.com/lists/powerbooks.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/powerbooks%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
