DOS ain't dead

New MB, is it possible to split single PS/2 to KB+mouse? (Users)

posted by RayeR , CZ, 20.10.2015, 19:38

> To use a Y-splitter, the motherboard hardware/BIOS must be designed
> correctly, and it sounds like on at least some of the modern Gigabyte
> boards (and maybe those from other manufacturers as well) this isn't the
> case. There's probably nothing you can do to fix it. Your most viable
> option is probably to use a USB mouse and a PS2 keyboard.

In case of Frank's MB he reported me that the pinout of combined PS/2 simply use the unused pins to populate mouse PS/2 signals. So his Y-splitter simply wires this pins correctly to female connector for mouse and no problem. In such case there's no need BIOS do anything. But I don't know if there exist some different combined PS/2 pinout. I can imagine it would physically use only 4 pins like normal PS/2 and switch data signals. I would need some MB to probe with DMM or a schematics...

> BTW, it's a similar situation for the PS2-to-USB adapters that are supposed
> to let you plug a USB mouse/keyboard into a PS2 port. Those are simply
> wiring adapters and assume the mouse hardware is capable of understanding
> both PS2 and USB protocols (which are VERY different from each other).
> Such "dual-mode" mice (and sometimes keyboards) were relatively common back
> in the early days of USB when PS2 was just starting to be phased out, but
> not any more. And you can't tell which are which just by looking at them
> -- you need to find the design specs.

Yes, I already use MS intelli explorer USB via this adapter. I never disassembled it so I'm a little bit surprised now. But I remember that I read somewhere, that the adapter works only with MS mices, so this makes sense...

---
DOS gives me freedom to unlimited HW access.

Complete thread:

• New MB, is it possible to split single PS/2 to KB+mouse? - RayeR, 19.10.2015, 17:57 (Users)
  • New MB, is it possible to split single PS/2 to KB+mouse? - Oso2k, 20.10.2015, 00:01
    • New MB, is it possible to split single PS/2 to KB+mouse? - RayeR, 20.10.2015, 15:51
      • New MB, is it possible to split single PS/2 to KB+mouse? - bretjohn, 20.10.2015, 16:13
        • New MB, is it possible to split single PS/2 to KB+mouse? - RayeR, 20.10.2015, 19:38
          • New MB, is it possible to split single PS/2 to KB+mouse? - Oso2k, 21.10.2015, 00:39
            • New MB, is it possible to split single PS/2 to KB+mouse? - RayeR, 21.10.2015, 18:32
              • New MB, is it possible to split single PS/2 to KB+mouse? - mvojvodic, 21.10.2015, 19:42
                • New MB, is it possible to split single PS/2 to KB+mouse? - RayeR, 22.10.2015, 00:28
                  • New MB, is it possible to split single PS/2 to KB+mouse? - mvojvodic, 22.10.2015, 11:18
                    • New MB, is it possible to split single PS/2 to KB+mouse? - RayeR, 22.10.2015, 18:11
                      • New MB, is it possible to split single PS/2 to KB+mouse? - mvojvodic, 22.10.2015, 20:21
                        • New MB, is it possible to split single PS/2 to KB+mouse? - RayeR, 30.10.2015, 05:25
                          • New MB, is it possible to split single PS/2 to KB+mouse? - RayeR, 03.11.2015, 14:31
                            • New MB, is it possible to split single PS/2 to KB+mouse? - RayeR, 04.11.2015, 04:41
                              • New MB, is it possible to split single PS/2 to KB+mouse? - Oso2k, 09.11.2015, 22:50
                                • New MB, is it possible to split single PS/2 to KB+mouse? - RayeR, 10.11.2015, 13:47