1. MC88920 has been designed specifically for the 20 and 25Mhz 68040 microprocessors. Click to expand... Yes, I noticed that when I reviewed the datasheets last week. However…

The most primitive stand alone Apple LCD was the blue & white 15" Studio Display at 1024x768. It is a multi-sync display so it will display 640x480. The earliest LCDs from …

I posed this question on the "bringing back to life" thread but did not get any response most likely because I slipped it in as an afterthought. Although it works perfectly, I wo…

I think I've figured it out, and it has nothing to do with Stuffit after all. The system is simply overheating. I turned it on yesterday evening and everything was working just f…

OK, if you're using 20 MHz oscillator in your mod, would you mind telling me where that 40 MHz signal for the processor comes from? :-D Click to expand... Well, apparently eac…

The following is taken from MacWorld's Mac Secrets, 5th Edition by David Pogue & Joseph Schorr: In reality, the Mac’s error codes aren’t nearly that enlightening. Fo…

"johnklos", _You can not make it work without the help of PLL chip in any way_!In all Quadras + IIVx this PLL works as Frequency doubler. That means, you put 12.5MHz in and out co…

"johnklos", _You can not make it work without the help of PLL chip in any way_! (PLL stands for Phase Locked Loop, check Google or Wiki how it works, in caseYou don't know.)In all…

Hi guys, Although we often mention Marc Schrier's page, we all should give a credit regarding this mod to that person from Japan, namely Hiromasa Yamaoka who was first to do suc…

Something else just occurred to me on the overheating possibility. Could it be the HD that's overheating and not the system? Tempest

The games will immediately crash again if I open them. But like I said it's not all the games, just certain ones. I'll crack 'er open and see if there's something loose inside or…

Ok yet another wrinkle. I had the Mac turned off for an hour or so while I did something else, came back, and now everything works. Shufflepuck, Fools Errand, Gunshy, they all wo…

Ok yet another wrinkle. I had the Mac turned off for an hour or so while I did something else, came back, and now everything works. Shufflepuck, Fools Errand, Gunshy, they all wo…

Hmm... Just got an Illegal Instruction error in the control panel again. Could just the presence of a bad program in a folder cause the Mac to go wonky or does it have to be 'inst…

Hmm... Just got an Illegal Instruction error in the control panel again. Could just the presence of a bad program in a folder cause the Mac to go wonky or does it have to be 'inst…

I may have spoke too soon. Booting from a System Disk I still get errors in games. Shuffle Puck Cafe crashes with an illegal Instruction error after the Broderbund Screen (might …

I've been using Stuffit Deluxe 3.0.7 under System 6.0.8 on my SE/30 for ages now, although I must admit I don't use it that much at all. I use Stuffit Expander 5.5 more frequently…

I think you're right. Oddly it did work under System 6, it just caused everything else to have errors. Where can I grab the latest 3.x.x version? I assume that they're freew…

You never know - companies are still buying them, so it's just a matter of time before some older product becomes "obsolete" and the chips work their way onto eBay. Or if a company…

Tempest, Bear in mind that version 4.01 was written during System 7's era. It wouldn't surprise me much that you may need to upgrade to 7 to fix the problem. Otherwise, try down…

On the other hand, if you can get your hands on a Freescale made m68040 Click to expand... Yeah, like that's gonna happen. They are like $250-$300 each in bulk according to Fre…

With the help of a friend I finally have my Mac plus up and running. It has 4MB, a 500MB external HD, an CD Drive (an Apple CD150), and is running System 6.0.8. At first everythi…

Thanks. I did the MC88920/88916 swap, and pull pin 9 high (?) or something like that.http://homepage.mac.com/schrier/q605_40.html on one machine but could never get video. But…

Would you still need a heat sink/fan if you were using an 040 that was actually rated for 40mhz? Click to expand... Yes. The 40 MHz part is made exactly the same as the 25 MHz …

At first I swapped resistors to go to 33MHz and afterwards I installed 40MHz oscillator, as per instructions on Marc Schrier's page. http://homepage.mac.com/schrier/q605_40.html'&a…