Problem with mouse on A600

KONEY · 13 March 2018, 19:58

Guys, I've got a really annoying mouse problem on my Amiga 600 + Vampire 2. Basically when I move it pointer would randomly move in any direction and random mouse buttons get pressed. It happens in workbench and in boot menu so I exclude it can be caused by some program.

So far I have:
checked with other mouses
had a full recap of the motheboard
replaced both CIAs

but the problem persists. I was quite sure replacing the CIAs would resolve the issue but no luck so far...

Any idea, please?

idrougge · 14 March 2018, 00:19

Does this happen without Mr Vampire as well?

KONEY · 14 March 2018, 10:04

I didn't check because I got rid of the kickstart rom, but I'll try since you suggest, thanks!

KONEY · 17 March 2018, 03:55

OK, no Vampire: same problem...

KONEY · 17 March 2018, 04:53

Also, I tried this little program http://aminet.net/package/util/misc/jswap and changed the porf for mouse but the problem persists.

Toni Wilen · 17 March 2018, 10:24

CIAs don't control mouse movement (CIA = left/fire button, Paula = second/third button, Denise = movement).

Most common reason for joystick direction/mouse movement problems is damaged TTL chip between mouse ports and Denise. (A500 = U15, A600 = U34)

But in your situation it can't be the cause because it can't explain random button presses.

Possibly bad power/ground connection?

MigaTech · 17 March 2018, 13:57

Have you checked the DE9 port itself? Also look for any trace problems. It could be a short or loose PCB pin. Is the other DE9 working OK?

volvo_0ne · 18 March 2018, 23:15

I had a similar problem (except the button press issue) AND it was just the same with my spare mouse.

I cured it by buying a PS2/usb (inc mouse) converter from Ebay which worked a treat.

I think it was only about £15 or so but it fixed the problem (strangely BOTH original mice exhibited exactly the same fault) .

Not sure if you want to go this route, but it worked for me.

robinsonb5 · 18 March 2018, 23:26

Are you using a real Amiga mouse or a PC mouse with an adapter?

13 March 2018, 19:58	#1
KONEY Vampire 2 Amiga Musician Join Date: Jan 2009 Location: Venice - Italy Posts: 333	Problem with mouse on A600 Guys, I've got a really annoying mouse problem on my Amiga 600 + Vampire 2. Basically when I move it pointer would randomly move in any direction and random mouse buttons get pressed. It happens in workbench and in boot menu so I exclude it can be caused by some program. So far I have: checked with other mouses had a full recap of the motheboard replaced both CIAs but the problem persists. I was quite sure replacing the CIAs would resolve the issue but no luck so far... Any idea, please?

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14 March 2018, 00:19	#2
idrougge Registered User Join Date: Sep 2007 Location: Stockholm Posts: 3,318	Does this happen without Mr Vampire as well?

14 March 2018, 10:04	#3
KONEY Vampire 2 Amiga Musician Join Date: Jan 2009 Location: Venice - Italy Posts: 333	I didn't check because I got rid of the kickstart rom, but I'll try since you suggest, thanks!

17 March 2018, 03:55	#4
KONEY Vampire 2 Amiga Musician Join Date: Jan 2009 Location: Venice - Italy Posts: 333	OK, no Vampire: same problem...

17 March 2018, 04:53	#5
KONEY Vampire 2 Amiga Musician Join Date: Jan 2009 Location: Venice - Italy Posts: 333	Also, I tried this little program http://aminet.net/package/util/misc/jswap and changed the porf for mouse but the problem persists.

17 March 2018, 10:24	#6
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 43 Posts: 20,900	CIAs don't control mouse movement (CIA = left/fire button, Paula = second/third button, Denise = movement). Most common reason for joystick direction/mouse movement problems is damaged TTL chip between mouse ports and Denise. (A500 = U15, A600 = U34) But in your situation it can't be the cause because it can't explain random button presses. Possibly bad power/ground connection?

17 March 2018, 13:57	#7
MigaTech Only Amiga !! Join Date: Apr 2017 Location: United Kingdom Posts: 404	Have you checked the DE9 port itself? Also look for any trace problems. It could be a short or loose PCB pin. Is the other DE9 working OK?

18 March 2018, 23:15	#8
volvo_0ne Registered User Join Date: Mar 2015 Location: Sheffield UK Posts: 282	I had a similar problem (except the button press issue) AND it was just the same with my spare mouse. I cured it by buying a PS2/usb (inc mouse) converter from Ebay which worked a treat. I think it was only about £15 or so but it fixed the problem (strangely BOTH original mice exhibited exactly the same fault) . Not sure if you want to go this route, but it worked for me.

18 March 2018, 23:26	#9
robinsonb5 Registered User Join Date: Mar 2012 Location: Norfolk, UK Posts: 558	Are you using a real Amiga mouse or a PC mouse with an adapter?

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