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Author Topic: FPU usage without crystal!  (Read 1373 times)

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Offline r6stuTopic starter

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FPU usage without crystal!
« on: October 09, 2005, 11:58:08 AM »
I got a ram card with an FPU from ebid. However it dosent have an FPU crystal with it!!

Is it safe to use without a crystal or should I take the FPU out??


What crystal do I need?? On the FPU it says

xc68882rc33a
2b74s
dea08901
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Offline Framiga

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Re: FPU usage without crystal!
« Reply #1 on: October 09, 2005, 12:21:27 PM »
the FPU uses (in your case) the same cristal that the main CPU uses.

Anyway is possible to use a separate (and higher) cristal for the FPU, configurable usually through a jumper.

btw . . . the FPU its a 68882 at 33 Mhz

Which brand/model the RAM expansion is?

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Offline r6stuTopic starter

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Re: FPU usage without crystal!
« Reply #2 on: October 09, 2005, 04:44:28 PM »
The Card is a Microbotics MBX 1200z.
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1x A1200,Apollo 1230/50 16mb,6gig hdd,os3.9 zappoCD
1x A600, 2mg, 170mb hdd, OS2
1x A1500, 5mb, 500mb, OS3.1
1x A1200 SPARES
1x A500+
 
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