🚀 go-pugleaf

Kevin Sherman wrote:

> TJ> As a result, the modem connected to the line got fried. The PC connected
> TJ> to the modem died. My Amiga, connected to the PC via a null modem cable
> TJ> seems to be OK *except* that the serial port appears to be dead - I've
> TJ> tried it with a modem borrowed from a friend (which works) and I can't
> TJ> persuade it to do anything at all so I'm fairly sure that it is dead.
> Sounds to me like it might be one of the CIA chips got fried. Does the
> printer not work as well? 

I don't have a printer so I haven't tried the parallel port yet.  I can
borrow 
one to try it with though, if that's relevant.  Haven't tried the gameport
either
since I don't have a joystick but I can swap the mouse into it and switch
the port
easily enough.

The floppy controller is definitely OK, as is everything else AFAICS,
including the
IDE controller.

> You don't say what type of Amiga you are using but it doesn't really matter. 

Oops.  It's an A1200.  Motherboard rev 1D IIRC.

> All Amiga's use the same CIA chips (well maybe not
> the A4000T). There are two chips, an ODD CIA and an EVEN CIA and they should
> be marked on the motherboard silk screen. Try swapping them and if your
> mouse stops working but the modem starts working it is a blown CIA chip.

I've heard about swapping them before but everything inside is surface
mounted; I
can't really swap them very easily...

-- 
           * - * - * - *    T i m  J a c k s o n    * - * - * - *
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