Amiga.org

Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: carvedeye on February 14, 2010, 08:58:07 PM

Title: How to use 9pin to PS/2 adaptor?
Post by: carvedeye on February 14, 2010, 08:58:07 PM
HI i have a 9 pin to ps/2 adaptor for my amiga but when i hook it up i get no respnse but the mouse works fine on my pc am i doing something wrong?
Title: Re: How to use 9pin to PS/2 adaptor?
Post by: tone007 on February 14, 2010, 09:08:53 PM
Is it a simple "serial to PS/2" adapter or a "PS/2 to Amiga" adapter?  The former will never work, and if it's the latter, you might want to provide the model information.  I think older ones required drivers.
Title: Re: How to use 9pin to PS/2 adaptor?
Post by: carvedeye on February 14, 2010, 09:13:12 PM
sorry its a ps/2 to serial and i have no idea of the model number all it has is an "N"  on it?
Title: Re: How to use 9pin to PS/2 adaptor?
Post by: tone007 on February 14, 2010, 09:14:50 PM
If it's a PS/2 to serial adapter, you'll want to stop plugging it into your Amiga before you break something, it won't work.  Those are PC only, and generally only work with specific mice.  You'll need a smarter device than that to work with your Amiga, something like a Cocolino or Micromys.
Title: Re: How to use 9pin to PS/2 adaptor?
Post by: motrucker on February 14, 2010, 09:20:32 PM
Quote from: carvedeye;543187
sorry its a ps/2 to serial and i have no idea of the model number all it has is an "N"  on it?

Please listen to tone007 - He has hit it square on the head. It could hurt your Amiga...
Title: Re: How to use 9pin to PS/2 adaptor?
Post by: carvedeye on February 15, 2010, 06:43:23 PM
ok many thanks i will not be trying that  lol
many thanks  :)
Title: Re: How to use 9pin to PS/2 adaptor?
Post by: alexh on February 15, 2010, 07:46:43 PM
You can get 9-pin to PS/2 adapters for Amiga but they are expensive, €30.

http://amigakit.leamancomputing.com/catalog/product_info.php?cPath=42&products_id=877
Title: Re: How to use 9pin to PS/2 adaptor?
Post by: Zac67 on February 15, 2010, 07:59:18 PM
Simple PS/2 to serial adapter can work - but since they're electrically/mechanically only they require a PS/2 mouse that's compatible with serial. Plugging a non-serial PS/2 mouse might break the mouse and/or your miggy's serial port.

In addition, you'll need a driver to make them work as a mouse. There is absolutely no way to make them work on the normal mouse port without an adapter like alexh pointed out.
Title: Re: How to use 9pin to PS/2 adaptor?
Post by: Christian Johansson on February 15, 2010, 08:08:51 PM
You need something like this http://aminet.net/driver/input/SerialMouseD.lha

Not sure if it works with a ps/2 mouse with a serial adaptor though.
(And you will need a 9pin -> 25pin adaptor too to try it).
Title: Re: How to use 9pin to PS/2 adaptor?
Post by: Ilwrath on February 15, 2010, 09:40:24 PM
Just to clarify what is being said here....

As originally stated, the Amiga's 9-pin ports are NOT serial ports.  They are Amiga mouse/joystick ports.  Completely electronically different from a serial port.  Plugging a PS/2->Serial adaptor into one of these ports can be VERY harmful to the device or the Amiga, as the power is on a different pin.  (and even if you moved the power to the correct pin, the joystick port still has no way of reading serialized data - it's a totally different port.)  The only things you should ever plug into an Amiga mouse/joystick port are Amiga mice, Amiga-specific mouse adapters, or Commodore/Amiga/Atari joysticks.

Now, you CAN use an old serial mouse on an Amiga, but through the 25-pin serial port on the back of the machine.  You could use a 25pin serial -> 9pin serial adapter, then use the 9pin Serial -> ps2/serial adapter, and then plug in a dual-mode serial/ps2 switchable mouse.  You'll then need to load the custom serial-port mouse drivers for the Amiga, and the mouse will only work in workbench and workbench-friendly applications.  It is only an exercise of complete pedantics that this is mentioned, though.  While you CAN do this, I have no idea WHY you'd ever WANT to do this...  It is MUCH less hassle and MUCH MUCH more compatible to just get an Amiga mouse.  :)
Title: Re: How to use 9pin to PS/2 adaptor?
Post by: carvedeye on February 15, 2010, 09:50:32 PM
Quote from: Ilwrath;543353
Just to clarify what is being said here....

As originally stated, the Amiga's 9-pin ports are NOT serial ports.  They are Amiga mouse/joystick ports.  Completely electronically different from a serial port.  Plugging a PS/2->Serial adaptor into one of these ports can be VERY harmful to the device or the Amiga, as the power is on a different pin.  (and even if you moved the power to the correct pin, the joystick port still has no way of reading serialized data - it's a totally different port.)  The only things you should ever plug into an Amiga mouse/joystick port are Amiga mice, Amiga-specific mouse adapters, or Commodore/Amiga/Atari joysticks.

Now, you CAN use an old serial mouse on an Amiga, but through the 25-pin serial port on the back of the machine.  You could use a 25pin serial -> 9pin serial adapter, then use the 9pin Serial -> ps2/serial adapter, and then plug in a dual-mode serial/ps2 switchable mouse.  You'll then need to load the custom serial-port mouse drivers for the Amiga, and the mouse will only work in workbench and workbench-friendly applications.  It is only an exercise of complete pedantics that this is mentioned, though.  While you CAN do this, I have no idea WHY you'd ever WANT to do this...  It is MUCH less hassle and MUCH MUCH more compatible to just get an Amiga mouse.  :)


Yeah I agree, just ordered a new mouse and a lyra 2 keybaord adaptor (my PC KEY adaptor blow a couole of days ago) and a led adaptor so i can hook up my led's inside my tower. Now all i need is a mediator LT4 and my Towered miggy is complete.