I'm definitely interested in something like this.

The Serpent Rider wrote on 2020-09-24, 20:57:

I can confirm that Socket 4 Intel Batman motherboard (and most likely all derivatives of this design) will work with PS/2 ISA adapter even without touching AMIBIOS. Which is crucial, since I can't even enter BIOS with dead RTC battery.

Great to hear - I especially had the Socket4's in mind when reading through this thread.

I can recommend the adapter. It works absolutely reliably for me in my 486 socket 3 machine. I have revision 1.1 of the adapter.
Rio444 is super friendly and very helpful. Highly recommended!

Does this card require -12V (as in negative 12V)?

I'm asking this, because I'm considering a solution like this for my Tandy 1000 EX, since it doesn't have any serial ports. But I'd also like to use a PicoPSU to power that system, and the PicoPSU does not provide a -12V rail, as far as I've understood.

Thanks. 🙂

Hi guys!
I 'm sorry for the long answers. I don't visit the forum often enough.
If you have not got an answer or are waiting too long, you can always ask a question by e-mail (address in signature).

digger wrote on 2021-05-09, 12:44:

Does this card require -12V (as in negative 12V)?

The card only uses + 5V, no other voltages.

gbeirn wrote on 2020-09-25, 22:57:

@Rio444 do you assemble these by hand? Meaning you have a soldering iron and do each smt part? Or do you have a machine to do it?

Yes, I solder by hand. I solder each SMD detail with a soldering iron. There are faster ways to assemble. But it seems to me that the volume of production is not so big enough that they to be used.

digger wrote on 2020-11-26, 19:22:

So how feasible would it be to develop an ISA card that would be software-compatible with the Microsoft InPort mouse card, but would be hardware-compatible with PS/2 mice? Wouldn't that be better than emulating an 8250 UART chip, including the buffering, due to it being serial interface? Also, would there still be a way to support the mouse wheel that way?

In reality, the interface of a Bus Mouse card is much simpler than RS232. It has a serious drawback - almost no documentation. However, I was able to collect information that is likely to be sufficient. So far, I gave up on this idea due to time constraints and because I was having difficulty getting drivers for some OS. I'm sure drivers can be found for most OS, but RS232 compatibility is still be better.
As for the InPort interface, although the adapter uses the same Bus Mouse, it is much more complicated and confusing than interface of a Bus Mouse adapter.

Rio444 wrote on 2019-12-19, 14:31:

Yes, the card is fully assembled. The price when paying using Paypal is $ 25 (if you pay as a family/friend, i.e. without a tran […]
Show full quote

Yes, the card is fully assembled.
The price when paying using Paypal is $ 25 (if you pay as a family/friend, i.e. without a transfer fee). Additionally, for shipping, $ 7 for one card and $ 9 for 2 or more.
Delivery time varies greatly by country. It seems the longest delivery time to Canada - about 1.5 months. To Germany and UK it is approximately 2 weeks. Shipping to the USA usualy takes a little more than 2 weeks.
If you name the country and I sent there, I will tell you how long the delivery took.

Here is the adapter Guide download/file.php?id=70920
I believe it will help you answer some of the questions.
Also see here Another PS/2 Mouse ISA (ISA8) card adapter
You can contact me by email

Greetings, I am new here 😀

I would be interested in purchasing a couple of these adapters but being new as a registered member I'll email you using my username as a reference. Kind Regards, -- Tom 😀

Belly1986 wrote on 2021-05-23, 07:08:

Greetings, I am new here 😀

I would be interested in purchasing a couple of these adapters but being new as a registered member I'll email you using my username as a reference. Kind Regards, -- Tom 😀

Wrote in PM.
Please check if the email is correct. I have not received any emails.

Rio444 wrote on 2021-05-29, 10:14:

Wrote in PM.
Please check if the email is correct. I have not received any emails.

I've double checked & I've re-sent it. Might be landing in a junk email folder, that's a possibility. -- Tom.

Happy to say i received the two cards i ordered and both working with no issues or problems under Dos 6.22, Windows 3.1, 95, 98SE and FreeDos straight out of the box.
Arrived well packaged and shipping took just over 2 weeks.
Thanks again Rio!