A2000 stopped seeing right mouse button

shirsch · 20 August 2008, 03:36

This is VERY strange. All of a sudden, my trusty A2000 has stopped responding to right mouse. I've tried three different known-good meece on it and no luck. Movement is fine, left button is fine. No response at all to right button.

It's not software, since I cannot even get to the boot setup screen in the 3.1 ROMs.

Any ideas?

rkauer · 20 August 2008, 03:50

Two possibilities:

1- Busted CIA (hard to believe, since movement and left click is OK);

2- the EMI protection is open (acts like a fuse) in the mouse port, pin 9.

Did you try to use the mouse in joystick port? AFAIR, it works.

Toni Wilen · 20 August 2008, 07:50

Quote:

Originally Posted by rkauer

1- Busted CIA (hard to believe, since movement and left click is OK);

Yes, very hard to believe because only 1st button goes to CIA

2nd fire/right mouse and 3rd fire/middle mouse = Paula. (pins 32 and 33 = mouse, 34 and 35 = joystick)

EMI protection most likely or broken track, most Amiga custom chips die very rarely (CIA on the other hand..)

rkauer · 20 August 2008, 15:59

Then just a suggestion: if the sound is distorted, time for a Paula replacement. But probably, as Tony said, just the EMI protection (equivalent to a fuse) is busted.

shirsch · 22 August 2008, 03:03

Many thanks, all! Turned out to be a bit of oxidation on the Paula chip's socket. Reseated it and all's well.

20 August 2008, 03:36	#1
shirsch Zone Friend Join Date: Jun 2006 Location: Burlington, VT USA Posts: 34	A2000 stopped seeing right mouse button This is VERY strange. All of a sudden, my trusty A2000 has stopped responding to right mouse. I've tried three different known-good meece on it and no luck. Movement is fine, left button is fine. No response at all to right button. It's not software, since I cannot even get to the boot setup screen in the 3.1 ROMs. Any ideas?

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20 August 2008, 03:50	#2
rkauer I hate potatos and shirts Join Date: Oct 2007 Location: Sao Leopoldo / Brazil Age: 58 Posts: 3,482	Two possibilities: 1- Busted CIA (hard to believe, since movement and left click is OK); 2- the EMI protection is open (acts like a fuse) in the mouse port, pin 9. Did you try to use the mouse in joystick port? AFAIR, it works.

20 August 2008, 15:59	#4
rkauer I hate potatos and shirts Join Date: Oct 2007 Location: Sao Leopoldo / Brazil Age: 58 Posts: 3,482	Then just a suggestion: if the sound is distorted, time for a Paula replacement. But probably, as Tony said, just the EMI protection (equivalent to a fuse) is busted.

22 August 2008, 03:03	#5
shirsch Zone Friend Join Date: Jun 2006 Location: Burlington, VT USA Posts: 34	Many thanks, all! Turned out to be a bit of oxidation on the Paula chip's socket. Reseated it and all's well.

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