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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: r6stu on October 09, 2005, 11:58:08 AM

Title: FPU usage without crystal!
Post by: r6stu 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

Title: Re: FPU usage without crystal!
Post by: Framiga 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?

Title: Re: FPU usage without crystal!
Post by: r6stu on October 09, 2005, 04:44:28 PM

The Card is a Microbotics MBX 1200z.