on 7/6/05 6:42 AM, R. A. Cantrell at [EMAIL PROTECTED] wrote: > on 7/5/05 10:55 PM, Adam Vaughn at [EMAIL PROTECTED] wrote: > >> Not a bad idea. I've zapped the PRAM settings over 20 times so far, with no >> luck. I pulled the PRAM battery for an hour, put it back in, zapped the PRAM >> settings, then tried, but with no luck. I don't even think the PRAM settings >> have been lost once! I am quite perplexed, to say the very least. >> -Adam > Try hitting the cuda button while the power cord is disconnected and the > battery is out.
That doesn't really work, does it? My understanding of the cuda button is that it's a reset switch for PR(AM and anything else that's powered by the battery when the system is off and not powered by the AC cord). I've designed a few dozen microprocessor boards in the past 20 years (many types of procs) and a reset switch only works with power applied. In this case it's when it's battery only and not plugged into the wall. The way it works is ALL processors - and many other types of chips like flash and SDRAM which are in all our Macs - have a reset input that is activated by a logic low. This initializes all of the devices - read as IC's - in a digital system. It's a way of telling the system to go back to start and try again. Like when we press control-command-start keys on our Macs when they crash (during the development of a proc board the reset switches often get worn out on the prototypes). The signal is normally a logic high until the reset switch is pressed which sends a logic low pulse to the pin of the devices which in turn reset themselves. Resets are critical with every thing you own that contains digital electronics including cars, phones, coffee pots, cameras, can openers, oh, and computers. Did I leave anything out? r -- G-List is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | -- We have Apple Refurbished Monitors in stock! | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> G-List list info: <http://lowendmac.com/lists/g-list.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/g-list%40mail.maclaunch.com/> iPod Accessories for Less at 1-800-iPOD.COM Fast Delivery, Low Price, Good Deal www.1800ipod.com
