Serial port connectors (mouse) won't work on Alaris Cougar 486BL

Serial port connectors (mouse) won't work on Alaris Cougar 486BL - Solved!!!!

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First post, by butjer1010

Posted on 2025-04-26, 12:44

butjer1010 Offline

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Rank: Oldbie
Posts: 530
Joined: 2021-05-14, 13:21
Location: Croatia

Hi,
i don't know how, but i managed to buy Alaris Cougar motherboard, and it works fantastic. CPU works on 100MHz (fastest 386 on earth!!!), i have installed DOS 6.22 and Windows 3.1, but i have problem with Serial Port connectors! Mouse won't work in any JP 27 or JP28 via "good known cable". When i insert IDE controller with serial port on it, same mouse with same cable work normally (COM1 IRQ4, same setting are in BIOS (MR) when ide controller isn't inserted)?!? Could have both serial port connectors been faulty, or is there any setting in BIOS i can change to make mouse to work?
Thanks in advance!

Last edited by butjer1010 on 2025-04-26, 14:10. Edited 1 time in total.

Reply 1 of 3, by vic911

Posted on 2025-04-26, 13:13

vic911 Offline

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Rank: Newbie
Posts: 5
Joined: 2023-12-31, 09:05

hi, might be worth a look
Serial port on 486 motherboard

Reply 2 of 3, by butjer1010

Posted on 2025-04-26, 13:48

butjer1010 Offline

Rank Oldbie

Rank: Oldbie
Posts: 530
Joined: 2021-05-14, 13:21
Location: Croatia

Wooow, i didn't know there are two different serial port pinouts???? Od course, mine serial port has ground on pin 9, so this is intel/dtk type. I need to connect cables different way to mouse can work!!! Thanks thousand times!!! Will let You know about the income 😀

Reply 3 of 3, by butjer1010

Posted on 2025-04-26, 14:10

butjer1010 Offline

Rank Oldbie

Rank: Oldbie
Posts: 530
Joined: 2021-05-14, 13:21
Location: Croatia

I have found almost 20 brackets, and can You believe???? One of them was DTK/Intel type, with 9th pin connected to 5th, and of course, the mouse work!!!!!!!! Thaaaaaanks maaaan! I should ask that question 3 days ago 😀 😀 😀 I was trying to instal 10 different drivers, on different COM ports, Different IRQs,....... nothing worked!
Now i'm smarter for this "serial thing" 😀

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