On Tuesday, Dec 17, 2002, at 23:16 Europe/London, [EMAIL PROTECTED] wrote:
> The Turbo 040, as you probably know, has one oscillator-- a full-size > metal- > can one. The cards use a 2x multiplier to derive the 68040's speed. > So, the > 68040-40 model uses a 20 MHz oscillator. I desoldered this, and > replaced it > with a 24 MHz oscillator. 24 x 2x Multiplier = 48 MHz. To keep it > cool, I added > a fan taken from a PC CPU-Cooler to the heatsink. > > I tried a 50 MHz with a 25 MHzoscillator too, but, as has been > previously > stated, that makes 1.4 MB floppies unreadable. At 48 MHz, only 800k > floppies don't work. I don't use them, so that's fine with me. I presume that's something to do with it messing up the timing on the bus right? Or is it to do with the variable speed disk reading that the drives does on 800k disks? Wierd side effect all the same! Does it effect over-clocked LCs? If so I really ought to know. -- Mark Benson AIM - SilValleyPirate Visit FlatPackMacs online: <http://fpm.gotdns.com> Visit my Homepage: <http://homepage.mac.com/markbenson> "Never send a human to do a machine's job." -The Matrix -- Vintage Macs 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> Vintage Macs list info: <http://lowendmac.com/lists/vintagemacs.shtml> The FAQ: <http://macfaq.org/> --> 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/vintage.macs%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
