Re: SIS Question

[mportune@telerama.lm.com (Matt Portune)]

In article <5gsc03$13ii@uni.library.ucla.edu>, pubpc1@library.ucla.edu wrote:
>in this, but don't let that fool you.  Reading Nate's FAQ makes
>it seem like you MUST solder the Zip if you want to get it going
>fast, but I upgraded by other methods.

[snip]

>A full size oscillator.  Both Digi-Key and JDR has these.  Divide
>oscillator speed by four to get Zip speed.  JDR has the OSC50.0
>(50MHz oscillator), which will make a 12.5MHz Zip.  Digi-Key has
>faster parts.

I'm interested in how you got a new crystal on without de-soldering the old 
one.  Was your ZIP's crystal already socketed?

>Now Nate's FAQ says that you need to replace the 74F00 with 74HC00.
>I did NOT have to do this to get it running at 13.75MHz.

This isn't set in stone, though.  It depends on the ZIP.  Some cards refuse to 
run if they don't have the HC gates.  Mine won't run if I DO have the HC 
gates.  It's completely up in the air.

>sockets.  Data should always be slower than tag. 

This also varies.  (Don't ya just love GS hardware?)  I have 15ns in all 4 
sockets, and my machine is VERY stable.  Other people have reported 
differently.

Just adding info.  :)

- Matt


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