[jtslade]

So I found someone who actually has credit LED support and guess what the guy runs with Hyperspin.

http://www.youtube.com/watch?v=j9Zm_qqjuks

This is something I have been looking for so that my MVS Neo Geo 25 HS cab is more authentic with LED coin counters.

ref thread: http://www.hyperspin-fe.com/forum/showthread.php?t=862

This is huge, if anyone knows this guy please ask him to contact me.


http://www.youtube.com/user/WayneThomason

[SophT]

my guess is that - from looking at the video, the way he enters a coin and it loads into the LED, then presses another key to actually USE the coin in MAME, and that it's persistent across mame sessions:

He's using HedKaze's CoinDrop

This program will allow you to send coin drops to Mame from within your front-end. It runs in the background using a very small amount of CPU. When it detects a coin drop it will play a sound effect and store the amount of coins in memory. When you start Mame you can press the start keys and a credit is automatically registerd and starts the game. Dropping coins outside of Mame means you can carry over credits to multiple games.

And my guess is the LED is just reading the value from coindrop - though I don't know if it supports output natively or the video creator added it though his own program.

[jtslade]

Now begins the long journey to get it to either work with a Neo Geo MVS Credit led which I have several of (Both rectangle and square versions for your Neo Fans out there) .. or to build two seven segment LED displays that will interact with a coin drop and +1 for coin 1 or 2 then -1 for player 1 or 2 start. Then reset to zero on an esc key push.

[waynet2]

Actually, it was done by using a bit of an intricate series of specialty programming for the display hardware and a batchfile that checks for the existence of the logfile produced by the above mentioned program, copies it to the comport, then deletes it and repeats. It's a little more than that though, since one line in the logfile causes the wrong value to be displayed. To solve that I used the FINDSTR command to search only for the bad line, and send all other lines to the comport. I want to get a more reliable routine that actually patches into the filename so writes to that file don't actually update a file, but rather send directly to the comport. I don't know how feasible that is though. The display and it's PicAxe 18x programming can be found in my PicAxe forum thread:

http://www.picaxeforum.co.uk/showthread.php?t=12700

[frankiben123]

that's a useful post..

carte de credit

[jtslade]

Yes sometime I do think late at night while tweaking my arcade frontend and then decide to stay up another 3 hours just to get 3do or Naomi games to load just right or some other thing that only I will ever notice, I have a flash of what the heck am I doing? But then again I look at the arcade cab as a whole and realize that I put tons of effort into making it look as authentic as possible. Then those darn Credit LED's are staring back at me.. Well more like the white overlay squares where they are supposed to be are looking back.


REAL:


Fake:


So then I decide to stay up even later and research more about how to program a Seven Segment LED display. Something I really won't have much use for after its finished. But the same can be said about alot of things.

[Lashek]

jtslade: Are the LED's hooked up through USB? Serial? Is there a command line tool already that can update them? Any spec docs to what you were looking to get?

For the most part, it probably wouldn't be hard to work with them, just curious as to specifics.

[jtslade]

Unfortunately there is not much arount for the MVS Neo Geo Credit LED's. I know headkaze wrote an awesome credit plugin for mame/front ends that the BYOAC crowd went bezerk at.
Which I understand the whole not wanting to have someone make money off their cab, but it makes it tough. Maybe I can figure out how to wire these up to a PC and run signals to it to figure out how they work.




http://www.electro-tech-online.com/e...s-neo-geo.html

One Idea was "
Sceadwian

Default
I'd run it using a micro controller to control the LED module itself and then simply use a serial port connection to the computer to pass the data to the module.
__________________"

[jtslade]

What I was thinking for all the people who have big red MVS Neo Geo cabs (and they are several out there) as writing an app that will run a real credit LED from mame. Capturing keyboard presses of coins, adding, subtracting and reseting on the esc key press.

This way you have to use a real MVS Neo Geo MV-LED. This should water down the flames of those saying it could be used in a money making enviroment given that there are a fixed number of the MV-LED's in existance.

And who would be crazy enough to buy a couple just to get them to work in MAME.. Wait a min... Yes who would be that disturbed. Besides me.

[jtslade]

I messaged MikeFr from BYOAC who also has a Neo Geo cab with MV-Led's. I'll see if he wants in on this one.

He has a great looking Big Red cab !

http://www.freemansgarage.com/mamecab.html