pshipkov wrote on 2023-06-18, 07:28:
Good feedback.
I dont have a lot of time to allocate fixing this issue, so looking for potential shortcuts - something as prepackaged as possible.
Except for option F, all are out-of-the-box ready.
pshipkov wrote on 2023-06-18, 07:28:The B option looks like a good potential solution, but something in your wording suggests additional mods are needed, for the keyboard controller, etc.
Can you clarify ?
Each of the options are independent of each other. I don't think I wrote mods were needed for Option B.
You buy a bus mouse controller card: https://www.ebay.ca/itm/324349817430
You buy a bus mouse: https://www.ebay.com/itm/295752266015
And install. The Logitech driver I attached should also work with bus mice. Bus mice are now quite uncommon. https://en.wikipedia.org/wiki/Bus_mouse Most people think they are PS/2 mice, but they are their own protocal. I suggest using a Microsoft bus mouse card with a Microsoft bus mouse and a Logitech bus mouse card with a Logitech bus mouse, although I was able to use the Microsoft card with my Logitech bus mouse, something worked better with the Logitech bus card, but I forget what now.
pshipkov wrote on 2023-06-18, 07:28:
Option A - does not look like this is ready to use, but need to at least partially work it out with forum members, or go through a lengthy process of fabing pcbs and so on. Or am i missing something ?
Best not to look at the first picture on page 1 and assume that this is where things are at now. A few pages down, the assembled units: Re: Another PS/2 Mouse ISA (ISA8) card adapter , contact Rio444. He was selling them fully assembled in the past, but not sure if the conflict in Ukraine will limit shipments from Russia.
pshipkov wrote on 2023-06-18, 07:28:
Option C - that was already tried.
I thought you didn't use floppy drives? haha. How many different I/O cards and mice did you try with everything disabled except for floppy and COM1? Which mouse brand and models did you try?
pshipkov wrote on 2023-06-18, 07:28:Option D and E are low chance of success. I think there is some hardware issue, potentially a cold joint or physical damage in the inner layers of the board.
If a cold joint, then try a a few different ISA slots.
pshipkov wrote on 2023-06-18, 07:28:
Option F is not clear to me. Is it related to option B ?
The two options couldn't be more different.
Option F is to use a device that plugs into your KBC socket to allow for native PS/2 mice to plug in. I made these which took some time: Re: Native PS/2 mouse implementation for 386/486 boards using the keyboard controller
keropi made another: Re: Native PS/2 mouse implementation for 386/486 boards using the keyboard controller
I think maxtherabbit made his own and posted the gerbers, but I haven't tried this myself.
Re: Native PS/2 mouse implementation for 386/486 boards using the keyboard controller
Latest gerbers: Re: Native PS/2 mouse implementation for 386/486 boards using the keyboard controller
Maybe he has some extra ones he can sell to save yourself some time?
Once you've assembled the KBC device, you tell your motherboard that you have a PS/2 mouse either by modifying the BIOS (AWARD BIOSes are easy, AMI's are tricky, but jakethompson1 wrote a tutorial on how to do it) or by using PS2SUPPC.COM, which is a DOS TSR made by Rio444 here: Re: Native PS/2 mouse implementation for 386/486 boards using the keyboard controller I prefer to mod the BIOS since I usually install NT 3.51 or NT4. If you just use DOS/W31/W95, PS2SUPPC is good enough.
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pshipkov wrote on 2023-06-18, 07:28:
Will provide picture of the mobo. it wont provide any clues, thats why didnt do it already. A boring looking compact late 386 assembly.
Mostly psychological. If a help thread has no photos, people will ask. Secondly, maybe there is an obvious component missing that someone will spot (remember the missing ISA slot corner).
If there is, indeed, some problem with the motherboard which you are unable to find, I think using a bus mouse card with bus mouse would be the quickest option to find a workaround. In the mean time, I think it is a good practice to have some of the PS/2 KBC mod adaptors around for troubleshooting purposes.
Plan your life wisely, you'll be dead before you know it.