Help With ISA Controller Card Jumpers To Enable COM1 COM2 \ VOGONS

Help With ISA Controller Card Jumpers To Enable COM1 COM2

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First post, by GabrielKnight123

Posted on 2019-02-15, 15:54

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I have an ISA controller card and the IDE and floppy are working but I cant get COM1 or COM2 for a serial mouse to work, it has a Winbond chip on it and "UN1072 011070" printed on it and below that is "FCC ID:ID2-W83757S" below is a pic of what I have:

To the left of the Winbond chip is a bank of 4 jumpers I have tried to change these from pictures off the net that I found but changing any of these 4 either stops the slave IDE from working or the master IDE from working so from testing it cant be these 4 but I guess I could be wrong. Can someone help me to find a manual or jumper settings layout please, I tried another controller card and it works but it is lacking COM ports and my mouse works just fine too.

Reply 1 of 9, by dkarguth

Posted on 2019-02-15, 17:01

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I have a pretty much identical card, a different brand (a Kouwell KW-556N) but they are probably just the same card rebranded.
Anyway, here's the link to the Stason page.
https://stason.org/TULARC/pc/hard-disk-floppy … Interfa-41.html

"And remember, this fix is only temporary, unless it works." -Red Green

Reply 2 of 9, by GabrielKnight123

Posted on 2019-02-15, 17:50

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Thanks again dkarguth your link is the same as the one I found from another post here on Vogons:
http://www.rainbow-software.org/manuals/pti-227b.html I have tried every combination using Com1/2/3/4 and IRQ's but it seems I have a faulty card, no matter what I get the error "mouse/device not found" 🙁

Reply 3 of 9, by dkarguth

Posted on 2019-02-16, 01:07

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Have you made sure you're using the correct serial port bracket? There are 2 different pinouts.

"And remember, this fix is only temporary, unless it works." -Red Green

Reply 4 of 9, by 486guy

Posted on 2021-04-21, 15:15

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dkarguth wrote on 2019-02-16, 01:07:

Have you made sure you're using the correct serial port bracket? There are 2 different pinouts.

I know this is an old post but I’m having a similar issue with the same i/o controller card. Do you any any serial cable bracket that works with this type of controller card. The usual cable doesn’t seem to work because of the serial headers on the card are different than the most common. I’ve seen a lot of this IO controller cards with the usual serial cable but I doubt if they work with a serial mouse.

Reply 5 of 9, by ggalvan

Posted on 2023-09-02, 08:34

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I have the same problem with a very similar i/o controller card.

Reply 6 of 9, by mkarcher

Posted on 2023-09-02, 10:49

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As already mentioned in the thread, there are two kinds of serial port brackets. The ground pin on the DE-9 connector is pin 5. Check continuity between pin 5 on the DE-9 connector and ground on the card. If there is no continuity, you got the wrong kind of bracket.

Reply 7 of 9, by ggalvan

Posted on 2023-09-02, 12:12

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With the DE9 connector included in the I/O card (similar board of first post), the serial mouse doesn't work, but with a DE9 connector of other PC work ..... Thanks for help

Reply 8 of 9, by Zerthimon

Posted on 2023-09-02, 12:29

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Such mi/o cards always have default setting of jumpers that enable all ports at their default addresses. It's usually not needed to change any jumpers, unless you have specific need to change address or disable a port (to avoid conflicts, etc).
So reset all jumpers to their defaults (pins 1-2, usualy) and then check if mouse works. If it doesn't, then next thing is to check connectivity between the pin header and the breakout connector.

Reply 9 of 9, by ggalvan

Posted on 2023-09-02, 13:42

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This is the original pinout of DE9 connector:

This is the correct

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