Configuring a hi\low shifter in MAME

[intrglctcrevfnk]

So I picked up an old pole position hi\low shifter from a local arcade repair shop today. I'm wondering if any of you have set it up like this, and if this idea would work.

The old pole postion shifter had one microswitch. low was off and hi was on.

MAME is currently set up for 1 button to control the shifting. (press once for hi, once again for low).

So my one switch has two connectors (besides ground). Normally Open and Normally Closed.

What if I wired each one to the same input on a keyboard encoder?

For example, since low is off, the Normally Closed connection would send a signal down the line (good question: is it momentary or sustained?).

Hi is on so Normally Open would send a signal down the same line. (again, is it momentary or sustained?)

_ground

-----

I-- NC ---------> both of these

I-- NO----------> combined to one joykey

-----

everytime I shift between hi and low it would trigger the joykey (im using a hacked MS Dual Strike for the extra inputs)

Think it would work?

[Rawd]

Please let us know. I have a friend with a non-working Chase-HQ cabinet, and I was thinking of converting it to a racing only Mame cab. This was one of the considerations I had.

[intrglctcrevfnk]

I've been looking around on the internet to figure this out.

Looks like a long time ago there was a way to recompile mame to change the shifter code. (mame .56!!!)

You could default it to always low unless pressed. Which would work perfect with the hi-on switch that I have.

I use mameplus and I cant find an option like that, so it looks like i'll have to figure it out the hard way....

I'll let you know..

[intrglctcrevfnk]

Looks like I might have buyers remorse.....

I just sat down at my cabinet and I cant find anywhere to mount it so I can reach it. OOPS!

The only place to properly mount it is below the CP, which is shelved out from the main body. So I'd have to reach underneath (where I cant see) which would also require bending down. Damn, should have thought of that earlier....

Save it for project #2?

Anyone see a place to put it?

[Secret80'sMan]

How about building a box that attaches to the right hand side of the cabinet. Will be ugly but should serve the purpose.

[intrglctcrevfnk]

How about building a box that attaches to the right hand side of the cabinet. Will be ugly but should serve the purpose.

good idea. might be able to make it modular with some quick disconnects.. thanks!

[kfchow]

So I picked up an old pole position hi\low shifter from a local arcade repair shop today. I'm wondering if any of you have set it up like this, and if this idea would work.

The old pole postion shifter had one microswitch. low was off and hi was on.

MAME is currently set up for 1 button to control the shifting. (press once for hi, once again for low).

So my one switch has two connectors (besides ground). Normally Open and Normally Closed.

What if I wired each one to the same input on a keyboard encoder?

For example, since low is off, the Normally Closed connection would send a signal down the line (good question: is it momentary or sustained?).

Hi is on so Normally Open would send a signal down the same line. (again, is it momentary or sustained?)

_ground

-----

I-- NC ---------> both of these

I-- NO----------> combined to one joykey

-----

everytime I shift between hi and low it would trigger the joykey (im using a hacked MS Dual Strike for the extra inputs)

Think it would work?

The problem is that you are looking for a discrete way of sending a high or low and mame is toggling the high/lows. I assume that given that is a relay driven control the common input is outputed to the NO & NC high/low outputs. This means that the pulse mame is expecting will not work (your gearbox will be outputting a constant signal).

You could probably create a board and program an AVR to pulse a relay momentarily upon change in state (NO or NC states) however your gear changes will most likely go out of sync.

[DBIZZZZ]

4 years late ,, but I think here's your solution:

http://forum.arcadecontrols.com/index.php?topic=83870.0