Solved Taito Elevetor Action boots to 1 credit.

[Georgian2]

Is it normal for an elevator action (4 board set) to boot to 1 credit no matter what the coin settings are? can't get it to run in mame to test....
Thanks.

 

[TheDaddy]

I dont know any game that boots to one credit to be honest. What set is it I will test ?? I have tested Elevator and boots to no credits :-



There is a free play but more likely an issue in the control inputs ?

Dave.

 

[Georgian2]

I dont know any game that boots to one credit to be honest. What set is it I will test ?? I have tested Elevator and boots to no credits :-

View attachment 11147

There is a free play but more likely an issue in the control inputs ?

Dave.

Thanks. Romident showas up as elevator.
it's wierd... if all the dips an bank B are off -> 9 coins for 1 credit it still boots with 1 credt and stays an player start screen. If i let id die, then the credit is gone and stays in attract mode. coin input works as normal, 9 times for 1 credit.... same with dips for 1 coin 1 credit.

If there is a problem at the input stage, it cant just pulse 9 times at boot?? I'll have to check all the roms.

 

[TheDaddy]

No you would expect it to , I would get the scope on the coin inputs and test when powered on. Its a strange one.

Dave.

 

[Georgian2]

Well it makes sense... No metter what settings one has for the coin inputs, the service switch still dose one credit per push.
Long story short, pin 2 on IC27 - mc14584 (has beed replaced before with an LS14) stuck HIGH -> Service switch always pressed-> coin up on boot replaced the IC with another LS14 and the game boots just fine with 0 credits in attract mode.

good one.

**edit: actually the input (pin1) is stuck LOW...

 

[TheDaddy]

Super , rare i am correct lol. Glad its sorted , remember 2 heads are always better than 1 !

Dave.

 

[tin]

Wow the Bionic Commando in the club my family used to frequent when I were a lad gave a free credit on boot - needless to say we learned that quickly. I always wondered why that behaviour would be a thing, and perhaps it's similar to this!

 

[Georgian2]

Wow the Bionic Commando in the club my family used to frequent when I were a lad gave a free credit on boot - needless to say we learned that quickly. I always wondered why that behaviour would be a thing, and perhaps it's similar to this!

I can imagine how happy you were when you found out.