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KMC A419-8 (ACER ALi M1419) for 386 - serial mice won't work

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First post, by BlackLinus24

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Hi,

So I wanted to build a new 386 system with a KMC A419-8 (ACER ALi M1419) motherboard. All went well except for the fact that I do not get serial mice to work on the system. CT Mouse driver recognizes the mouse, but it doesn't work either in Windows (3.1.) or any DOS games.

Here is my unsuccessful troubleshooting so far:

Tried different serial mice (Logitech and Microsoft) - all got recognized by the drivers
Tried Logitech and Microsoft mouse drivers instead of CTMouse - recognized the respective mice
Tried different addresses on the COM ports
Tried different COM ISA cards
Replaced the PSU as I thought there might be a problem with the -12V rail

Is there a known issue with this board? Any other causes that escape me? Would be great to get the mouse working on the system.

Thanks!

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Reply 2 of 6, by weedeewee

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I'm not fond of ctmouse, so, first suggestion, try another mouse driver. default microsoft mouse driver to test the mouse.

Right to repair is fundamental. You own it, you're allowed to fix it.
How To Ask Questions The Smart Way
Do not ask Why !
https://www.vogonswiki.com/index.php/Serial_port

Reply 3 of 6, by Roman555

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BlackLinus24 wrote on 2023-01-20, 13:56:

Anybody?
Is my case so isolated that nobody else has had this issue?

I would also try to setup the IO card into different ISA slots.

P.S. Does -12V present in ISA slots ?

[ MS6168/PII-350/YMF754/98SE ]
[ 775i65G/E5500/9800Pro/Vortex2/ME ]

Reply 4 of 6, by BlackLinus24

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weedeewee wrote on 2023-01-20, 13:58:

I'm not fond of ctmouse, so, first suggestion, try another mouse driver. default microsoft mouse driver to test the mouse.

As stated in my "troubleshooting so far", I have used different drivers and mice.

Reply 5 of 6, by BlackLinus24

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Roman555 wrote on 2023-01-20, 13:59:
BlackLinus24 wrote on 2023-01-20, 13:56:

Anybody?
Is my case so isolated that nobody else has had this issue?

I would also try to setup the IO card into different ISA slots.

P.S. Does -12V present in ISA slots ?

I tried several I/O cards in different slots.

How can I check if I have -12V in the ISA slots. Where would I have to measure with my multimeter? I checked the PSU so there I know I have a -12V rail.

Reply 6 of 6, by weedeewee

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BlackLinus24 wrote on 2023-01-20, 16:31:
weedeewee wrote on 2023-01-20, 13:58:

I'm not fond of ctmouse, so, first suggestion, try another mouse driver. default microsoft mouse driver to test the mouse.

As stated in my "troubleshooting so far", I have used different drivers and mice.

Man, I'm having a bad day with the reading.
sorry for that.
What IO card are you using ?

also for -12V
https://en.wikipedia.org/wiki/File:ISA_Bus_pins.svg

Right to repair is fundamental. You own it, you're allowed to fix it.
How To Ask Questions The Smart Way
Do not ask Why !
https://www.vogonswiki.com/index.php/Serial_port

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