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Author Topic: Amiga 1200 Clock Port  (Read 2192 times)

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Offline XDelusionTopic starter

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Amiga 1200 Clock Port
« on: August 09, 2011, 09:47:56 PM »
So I have one of those 1200's that was designed by a man who apparently smoked too much crack before going into work. That is to say, the clock port is on the wrong F'ing side.

I have a friend who has offered to fix this for me, but he says it would be best to leave the pins where they are, and install a new set.

Does this sound reasonable, or do they need to be completely removed for some reason?

Also, I assume that all that needs to be done is to basically heat up the solder points where the pins should be, and slip them in?

Thankx!
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Offline Tension

Re: Amiga 1200 Clock Port
« Reply #1 on: August 09, 2011, 10:03:16 PM »
i once had a 1200 with all the pins in place! i wonder what the other pins do?
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Offline XDelusionTopic starter

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Re: Amiga 1200 Clock Port
« Reply #2 on: August 09, 2011, 10:37:56 PM »
Quote from: Tension;653821
i once had a 1200 with all the pins in place! i wonder what the other pins do?



I guess f@ck your sh@t up if you plug the wrong thing in there like a Sound Card or Subway. :)
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Offline dreamcast270mhz

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Re: Amiga 1200 Clock Port
« Reply #3 on: August 09, 2011, 10:39:44 PM »
I learned the hard way, if your not sure what goes where, RTFM, it cost me over $200 in all, from both burning the mobo, paying a fraudulent user to fix my computer and losing it because he lied to me.
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Offline Tension

Re: Amiga 1200 Clock Port
« Reply #4 on: August 09, 2011, 10:42:00 PM »
Quote from: XDelusion;653829
I guess f@ck your sh@t up if you plug the wrong thing in there like a Sound Card or Subway. :)


I wonder if the other header has data lines in it that could be harnessed in some way?

Hmmmm....
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Offline Tension

Re: Amiga 1200 Clock Port
« Reply #5 on: August 09, 2011, 10:43:47 PM »
Quote from: dreamcast270mhz;653832
a fraudulent user to fix my computer and losing it because he lied to me.


Name and shame the cnut.
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Offline platon42

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Re: Amiga 1200 Clock Port
« Reply #6 on: August 09, 2011, 10:56:14 PM »
Quote from: Tension;653821
i once had a 1200 with all the pins in place! i wonder what the other pins do?


Together with the P9A connector (usually not populated at all) they provide a 32 Bit Data bus for the second megabyte of chipmem -- which is useless because luckily, a one MB chipram A1200 was never produced.
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Offline XDelusionTopic starter

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Re: Amiga 1200 Clock Port
« Reply #7 on: August 09, 2011, 10:59:02 PM »
So....


...is this a simple matter of putting in new pins where the solder is?
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Offline Darrin

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Re: Amiga 1200 Clock Port
« Reply #8 on: August 09, 2011, 10:59:02 PM »
Quote from: Tension;653821
i once had a 1200 with all the pins in place! i wonder what the other pins do?


I had one of those mobos too.  I had to snap them off in order to install my FastATA board.
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Offline Tension

Re: Amiga 1200 Clock Port
« Reply #9 on: August 09, 2011, 11:01:28 PM »
Quote from: platon42;653837
Together with the P9A connector (usually not populated at all) they provide a 32 Bit Data bus for the second megabyte of chipmem -- which is useless because luckily, a one MB chipram A1200 was never produced.




Cheers for the info!
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Offline magnetic

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Re: Amiga 1200 Clock Port
« Reply #10 on: August 10, 2011, 02:34:47 AM »
Hmm i heard about this problem when I read the PDF man of Subway.. What revision boards have this problem? I'm away from my A1200 atm and have an Escom one, I should be ok right? Its just certain cbm ones or what?
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Offline amigadave

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Re: Amiga 1200 Clock Port
« Reply #11 on: August 10, 2011, 02:42:35 AM »
Quote from: XDelusion;653819
So I have one of those 1200's that was designed by a man who apparently smoked too much crack before going into work. That is to say, the clock port is on the wrong F'ing side.

I have a friend who has offered to fix this for me, but he says it would be best to leave the pins where they are, and install a new set.

Does this sound reasonable, or do they need to be completely removed for some reason?

Also, I assume that all that needs to be done is to basically heat up the solder points where the pins should be, and slip them in?

Thankx!

What are you planning on connecting to it?  That might affect the answers you get, as to what you should do with the existing pins.
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Offline XDelusionTopic starter

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Re: Amiga 1200 Clock Port
« Reply #12 on: August 10, 2011, 03:36:57 AM »
SubwAy or Delfina
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