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Wanted: Advice on performing 68040 upgrade for Q605 — #22

"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…
68kMLA Troubleshooting by ojfd Sun, 7 Feb 2010 - 02:05

Wanted: Advice on performing 68040 upgrade for Q605 — #21

"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…
68kMLA Troubleshooting by johnklos Sun, 7 Feb 2010 - 01:33

Wanted: Advice on performing 68040 upgrade for Q605 — #20

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…
68kMLA Troubleshooting by ojfd Sun, 7 Feb 2010 - 00:35

Wanted: Advice on performing 68040 upgrade for Q605 — #19

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…
68kMLA Troubleshooting by johnklos Sat, 6 Feb 2010 - 02:51

Wanted: Advice on performing 68040 upgrade for Q605 — #18

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…
68kMLA Troubleshooting by Quadraman Sat, 6 Feb 2010 - 01:26

Wanted: Advice on performing 68040 upgrade for Q605 — #17

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…
68kMLA Troubleshooting by johnklos Fri, 5 Feb 2010 - 18:52

Wanted: Advice on performing 68040 upgrade for Q605 — #16

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 …
68kMLA Troubleshooting by johnklos Fri, 5 Feb 2010 - 18:10

Wanted: Advice on performing 68040 upgrade for Q605 — #15

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…
68kMLA Troubleshooting by trag Fri, 5 Feb 2010 - 16:19

Wanted: Advice on performing 68040 upgrade for Q605 — #13

Hi trag, Yes, I've modified Q605, not LC475, althoug I've put a jumper on the MB after I went to 40 MHz, which changed its gestalt ID to LC475. At first I swapped resistors to go…
68kMLA Troubleshooting by ojfd Thu, 4 Feb 2010 - 21:51

Wanted: Advice on performing 68040 upgrade for Q605 — #12

nb: 40MHz is not always stable though. A heatsink/fan for the 040 would be a good idea. Click to expand... I can confirm it - at 40 MHz heatsink is a must and you should use a…
68kMLA Troubleshooting by trag Thu, 4 Feb 2010 - 16:28

Wanted: Advice on performing 68040 upgrade for Q605 — #11

If you can't find a socket with clips, you can get something like Arctic Silver thermal adhesive: http://www.newegg.com/Product/Product.aspx?Item=N82E16835100005&cm_re=arc…
68kMLA Troubleshooting by johnklos Wed, 3 Feb 2010 - 23:43

Wanted: Advice on performing 68040 upgrade for Q605 — #10

nb: 40MHz is not always stable though. A heatsink/fan for the 040 would be a good idea. Click to expand... I can confirm it - at 40 MHz heatsink is a must and you should use a…
68kMLA Troubleshooting by ojfd Wed, 3 Feb 2010 - 22:57
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