SIS 486-471 Rev G and COM ports

[maelstrm]

Hello Federation!

I'm the proud new owner of a SIS 486-471 Rev G motherboard. I'm trying to get a serial mouse to work in Windows 3.1. But here's the problem. I see no RS232/9-pin headers (or anything that could even be a candidate for a header) on the board. The BIOS has a place to set the IRQs for COM1 and COM2, but no other reference to serial ports.

So I put in a Winbond multi-IO card. But no joy. This multi-IO card is now my IDE controller, and IDE is working. But running ctmouse.exe detects no mice.

Do I need to run MODE in DOS or something? Any ideas?

 

[maxtherabbit]

pictures of the board would be massively helpful

 

[Plasma]

That motherboard does not have integrated serial ports. The BIOS options are probably for the SIS 471 "green" functions that put the computer in standby if the keyboard/mouse is idle.

Make sure that the jumpers are set correctly on the multi I/O card, and there aren't conflicts with other devices.

 

[RetroTechBytes]

Ditto on the jumpers issue. Have had this happen a few times myself. Also might be worth ensuring that there are no resource conflicts of any other kind.

Are you using any other cards besides VGA and the I/O card at the moment? Might be worth uninstalling any, if so, and proceeding from there.