Mouse doesn't work on first port

[Oldsmobile_Mike]

Did you read through everything in this thread?

http://www.amiga.org/forums/showthread.php?t=56078

[Oldsmobile_Mike]

Here's mine. I swapped those two, dunno exactly if those are CIA or not:

http://phota.me/vwjf.jpg

Gah. Get that old Varta battery out of there, asap.

[Oldsmobile_Mike]

I know but I fear of de-soldering
Can I replace it with lithium battery or else?

AmigaKit and others sell coin cell conversion kits for just a few bucks, or you can make your own with commonly available bits (errr, they used to be commonly available, back when Radio Shack was still around).  But you don't have to replace it right away, just rock it back & forth a bit till it snaps out.  That'll solve at least one potential issue with your machine!  

[Oldsmobile_Mike]

Still fear of de-soldering lol

Considering the range of issues you're having, perhaps you should consider buying a replacement motherboard that's already been tested? Or sending yours to someone with skill working on these kinds of components (Acill on this forum comes to mind).  Otherwise you're just going to have to get your hands dirty, I'm afraid.  :lol:

[Oldsmobile_Mike]

One other quick thought - I just went back and looked at the picture you posted earlier.  It looks like you have some kind of ROM switcher installed?  Have you tried removing all expansions from the system and testing your mouse & serial port issues with everything removed?

(you should really, really clean up around that battery, and snip it out of there, btw)

[Oldsmobile_Mike]

The mouse only works on the left port while joysticks will work on either port.

That is incorrect.  Mice will work on either port.  Some games (Battle Squadron comes to mind) allow you to play with two mice.  Lemmings is the same - plug in two mice for two player mode.

Unless you mean in Workbench, which only works with the mouse in the first port, AFAIK (unless you use some software trickery to swap it).

[Oldsmobile_Mike]

No way to make it to work in Workbench?

Look on Aminet.  There's utilities that can swap the port.  Here's one I googled up real quick:

http://aminet.net/package/misc/fish/fish-0567