Curiosity

tygre · 06 June 2011, 04:36

Hi all!

In the process fof reviving my A1200, I noticed a 40-pin connector just "above and to the right" of the ROMs: I am curious to know what it is used for? Also, why is there a place for a chip just "below and to the left" of the ROMs?

Sorry in advance if these are noob questions that have been answered 1 trillion times, I just could not find the answers

Cheers!
Yann

Hewitson · 06 June 2011, 04:39

Quote:

Originally Posted by tygre

Hi all!

In the process fof reviving my A1200, I noticed a 40-pin connector just "above and to the right" of the ROMs: I am curious to know what it is used for?

Clockport.

Quote:

Also, why is there a place for a chip just "below and to the left" of the ROMs?

Absolutely no idea, I've wondered about that myself.

Jope · 06 June 2011, 06:54

Quote:

Originally Posted by tygre

Also, why is there a place for a chip just "below and to the left" of the ROMs?

It's for an FPU.

Quote:

Sorry in advance if these are noob questions that have been answered 1 trillion times, I just could not find the answers

The answers are in the A1200 schematics.

Hewitson · 06 June 2011, 08:08

It wouldn't be worthwhile doing, but just out of interest could you solder in a FPU there or is there other necessary components missing?

tygre · 06 June 2011, 15:23

Hi!

Thanks for your answers! Very interesting, it opened my eyes :-)

Cheers!
Yann

Daedalus · 08 June 2011, 09:27

Quote:

Originally Posted by Hewitson

It wouldn't be worthwhile doing, but just out of interest could you solder in a FPU there or is there other necessary components missing?

Well, I don't see why not - the connections seem to be there and the 020 is designed to work with an 881... But you're right, it's of fairly limited use, especially with no fast RAM.

06 June 2011, 04:36	#1
tygre Returning fan! Join Date: Jan 2011 Location: Montréal, QC, Canada Posts: 1,434	Curiosity Hi all! In the process fof reviving my A1200, I noticed a 40-pin connector just "above and to the right" of the ROMs: I am curious to know what it is used for? Also, why is there a place for a chip just "below and to the left" of the ROMs? Sorry in advance if these are noob questions that have been answered 1 trillion times, I just could not find the answers Cheers! Yann

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06 June 2011, 08:08	#4
Hewitson Registered User Join Date: Feb 2007 Location: Melbourne, Australia Age: 41 Posts: 3,772	It wouldn't be worthwhile doing, but just out of interest could you solder in a FPU there or is there other necessary components missing?

06 June 2011, 15:23	#5
tygre Returning fan! Join Date: Jan 2011 Location: Montréal, QC, Canada Posts: 1,434	Hi! Thanks for your answers! Very interesting, it opened my eyes :-) Cheers! Yann

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