33Mhz CPU Crystal for 68060

videofx · 25 July 2021, 02:54

Anyone know where I can get a 33mhz crystal for my 608060

It uses Fox F1100E four pin crystal

Thanks!

shaf · 25 July 2021, 03:06

Digikey has a few but look under Oscillators for the 4 pin types, ACH-33.000MHZ is available.

Shaf

videofx · 25 July 2021, 18:32

Shaf,

Thanks for the quick reply. I will check it out!!

videofx · 25 July 2021, 19:19

Shaf, that Oscilator is the half size. I need 14 pin din. But no worries. I found on ebay for 99 cents 32mhz crystal Fox F1100E which is a direct replacement for my 25mhz crystal. So I will only get 64mhz and not 66mhz. I don't think it will make any speed difference. And the 68060 should run a little cooler

sneeker · 26 July 2021, 00:40

Wouldnt you need a 66mhz crystal to run at 66 with an 060? I know in my apollo with an 040 a 66mhz crystal runs at 33 with an 040 and 66 with an 060?

nogginthenog · 26 July 2021, 11:11

I was thinking the same. My 50Mhz 68060 has a 50Mhz crystal. Maybe it depends on the board?

zipper · 26 July 2021, 11:42

Yes, seems that GVP is different compared to other makes.

Maffi · 26 July 2021, 15:31

Quote:

Originally Posted by videofx

Anyone know where I can get a 33mhz crystal for my 608060

It uses Fox F1100E four pin crystal

Thanks!

HTML Code:

https://centuriontech.eu/product/adjustable_system_clock/

videofx · 27 July 2021, 20:15

Quote:

Originally Posted by Maffi

HTML Code:

https://centuriontech.eu/product/adjustable_system_clock/

Thanks Maffi! That looks interesting.

videofx · 27 July 2021, 20:17

Quote:

Originally Posted by sneeker

Wouldnt you need a 66mhz crystal to run at 66 with an 060? I know in my apollo with an 040 a 66mhz crystal runs at 33 with an 040 and 66 with an 060?

On my 060 accelerator it has a 25mhz crystal so that runs the CPU at 50mhz, so to get 66mhz I need a 33mhz crystal.

jrobbins70 · 27 July 2021, 20:43

My 2c: you might not be able to overclock that GVP. The timing of the 25mhz crystal is also for the board, ram etc.

I had very little success overclocking GVP products back in the day.

Also, definitely have a cooler on that CPU if it is original from the 90s since they ran super hot.

J

torsti76 · 27 July 2021, 21:57

This is a Rev. 1 68060. If it even runs at 66 MHz (some are reported to be able to) you can boil an egg on it...

videofx · 27 July 2021, 22:55

Thanks! If it can be overclocked great. If not Im only out $4.00

I burnt my 4000 3.2 ROMS today so we will test at 50mhz and 64mhz.

Ill let you know if it works!

Thanks for all the answers

nogginthenog · 28 July 2021, 19:34

Maybe you should try a selection of clock crystals?

My CyberStorm MKII (also an early XC version) worked at 66Mhz but the SCSI module didn't like it. I'm a little scared of breaking it!

At 50MHz it never gets really hot (A4000).

videofx · 30 July 2021, 02:55

We are off to a good start. I put the 32Mhz crystal in the accelerator and it booted. So in order to see if it really works, I need to complete the build.

25 July 2021, 02:54	#1
videofx Registered User Join Date: Jan 2013 Location: Chicago, IL USA Posts: 585	33Mhz CPU Crystal for 68060 Anyone know where I can get a 33mhz crystal for my 608060 It uses Fox F1100E four pin crystal Thanks!

26 July 2021, 11:42	#7
zipper Registered User Join Date: Mar 2004 Location: finland Posts: 1,837	Yes, seems that GVP is different compared to other makes. Attached Thumbnails

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25 July 2021, 03:06	#2
shaf Registered User Join Date: Jun 2012 Location: Toronto / Canada Posts: 231	Digikey has a few but look under Oscillators for the 4 pin types, ACH-33.000MHZ is available. Shaf

25 July 2021, 18:32	#3
videofx Registered User Join Date: Jan 2013 Location: Chicago, IL USA Posts: 585	Shaf, Thanks for the quick reply. I will check it out!!

25 July 2021, 19:19	#4
videofx Registered User Join Date: Jan 2013 Location: Chicago, IL USA Posts: 585	Shaf, that Oscilator is the half size. I need 14 pin din. But no worries. I found on ebay for 99 cents 32mhz crystal Fox F1100E which is a direct replacement for my 25mhz crystal. So I will only get 64mhz and not 66mhz. I don't think it will make any speed difference. And the 68060 should run a little cooler

26 July 2021, 00:40	#5
sneeker Registered User Join Date: Mar 2008 Location: Manchester! Posts: 308	Wouldnt you need a 66mhz crystal to run at 66 with an 060? I know in my apollo with an 040 a 66mhz crystal runs at 33 with an 040 and 66 with an 060?

26 July 2021, 11:11	#6
nogginthenog Amigan Join Date: Feb 2012 Location: London Posts: 1,309	I was thinking the same. My 50Mhz 68060 has a 50Mhz crystal. Maybe it depends on the board?

27 July 2021, 20:43	#11
jrobbins70 Registered User Join Date: Jun 2020 Location: Ottawa, Canada Posts: 41	My 2c: you might not be able to overclock that GVP. The timing of the 25mhz crystal is also for the board, ram etc. I had very little success overclocking GVP products back in the day. Also, definitely have a cooler on that CPU if it is original from the 90s since they ran super hot. J

27 July 2021, 21:57	#12
torsti76 Registered User Join Date: May 2018 Location: Germany, Baden-Wuerttemberg Posts: 387	This is a Rev. 1 68060. If it even runs at 66 MHz (some are reported to be able to) you can boil an egg on it...

27 July 2021, 22:55	#13
videofx Registered User Join Date: Jan 2013 Location: Chicago, IL USA Posts: 585	Thanks! If it can be overclocked great. If not Im only out $4.00 I burnt my 4000 3.2 ROMS today so we will test at 50mhz and 64mhz. Ill let you know if it works! Thanks for all the answers

28 July 2021, 19:34	#14
nogginthenog Amigan Join Date: Feb 2012 Location: London Posts: 1,309	Maybe you should try a selection of clock crystals? My CyberStorm MKII (also an early XC version) worked at 66Mhz but the SCSI module didn't like it. I'm a little scared of breaking it! At 50MHz it never gets really hot (A4000).

30 July 2021, 02:55	#15
videofx Registered User Join Date: Jan 2013 Location: Chicago, IL USA Posts: 585	We are off to a good start. I put the 32Mhz crystal in the accelerator and it booted. So in order to see if it really works, I need to complete the build.

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