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Author Topic: Where to get an oscillator for the FPU socket of a Microbotics 1230XA?  (Read 924 times)

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Offline beltrixxTopic starter

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Where to get an oscillator for the FPU socket of a Microbotics 1230XA?
« on: January 10, 2008, 06:09:58 PM »
Hi,

Does anyone know where can I get an oscilator (40 Mhz) for the FPU socket of my Microbotics 1230XA?

I don't know nothing about this kind of components... some days ago I tried to find some web which sells them, but I'm afraid I'm not capable to identify the one I need (there are several different types)

I just know that my FPU is clocked at 40Mhz (the 68030 processor is clocked at 50 Mhz) and there's a sepparate slot to attach the FPU-clock in the accelerator board.

Thanks in advance,

Manel.

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Offline Damion

Re: Where to get an oscillator for the FPU socket of a Microbotics 1230XA?
« Reply #1 on: January 10, 2008, 06:24:00 PM »
You *might* find one at a local electronics shop. I live in a relatively small town, yet our local joint has a decent oscillator selection. Outside of that, you'd be looking at an online shop.

You need a "full size" (14 Pin DIP) type, 5v.



 
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Offline amigakit

Re: Where to get an oscillator for the FPU socket of a Microbotics 1230XA?
« Reply #2 on: January 10, 2008, 06:39:15 PM »
Here is a 14-DIL oscillator suitable for your accelerator:

http://amigakit.leamancomputing.com/catalog/product_info.php?cPath=45&products_id=257

We stock many other crystal oscillators both 14-DIL, 8-DIL and sockets
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Offline rkauer

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Re: Where to get an oscillator for the FPU socket of a Microbotics 1230XA?
« Reply #3 on: January 10, 2008, 06:54:57 PM »
 The MB1230XA don't need a separate crystal. Only if you want to run the FPU at different speed from the CPU.

 Or the FPU chip is intended to run on that speed only (ex.: 68882/33 with 68030/50).

 Check here!:rtfm:

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Offline beltrixxTopic starter

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Re: Where to get an oscillator for the FPU socket of a Microbotics 1230XA?
« Reply #4 on: January 10, 2008, 09:56:44 PM »
Thanks everybody for your replies, all have been very helpful.

Seems clear that I need a 14 pin DIL, 5v, 40 MHz crystal
oscillator.

Greetings,
Manel
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Offline Khephren

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Re: Where to get an oscillator for the FPU socket of a Microbotics 1230XA?
« Reply #5 on: January 10, 2008, 10:07:58 PM »
Freaky. I just asked the same question on ClassicAmiga.com. And the FPU crystal's been missing five years! The Microbotics must have had dodgy production. Although it seemed to run fine without it for a quite a while.
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