Adding credit and some weird stuff happens

[Gratizzz]

Hello all,

 

I'm kinda new to this hobby (yeah and it rocks!). Question, when I add a credit with the 5 button on my keyboard it wil add 1/2 credit. So when I press it twice I have 1 credit. Perfect right?

Now the weird this. When I keep pressing the button until 10 credits it's not adding the credits in the right way. What it should do is -> 1/2 - 1 - 1 1/2 - 2 - 2 1/2 - 3 - 3 1/2 - 4 - 4 1/2 - 5 - 5 1/2 - 6 - 6 1/2 - 7 - 7 1/2 - 8 - 8 1/2 - 9 - 9 1/2 - 10 (20 presses of key 5)

What it does is ->  1/2 - 1 - 1 1/2 - 2 - 2 1/2 - 3 - 3 1/2 - 5 - 5 1/2 - 6 - 6 1/2 - 7 - 7 1/2 - 8 - 8 1/2 - 10 (16 presses of key 5).

I want to start using real coins with a coin acceptor but in this way it's a bit strange.

 

 Tested it with TOTAN and White Water.

Anyone knows how I can fix this? Or is this just normal? Do you guys also have this problem?

Thanks all!

And what a cool this to do this virtual pinball :)!

[Rappelbox]

this is normal! it can be adjusted via the ROM settings within each game.
it is  a sort of "bonus" for players to add more credits to the machine and give them a reward in form of 5 credits instead of 4.
If you check pictures of real machines you'll often see that bonus system

[deadmanworking]

Probably the pricing setting in the ROM. This looks like it's set so that you get 5 credits for only 8 coins instead of 10, which is one possible pricing scheme. (others give you discount already when you insert 3 or 5 coins) 

Push End key to open the coin door and then cycle through the ROM options with 8 and 9 key to find the pricing category, one of the options there should correspond to 2 coins = always 1 credit without discount. 

[Gratizzz]

Tnx for the quick replies! I understand it now! I wil try to find the option in the rom! Will let you know.

[Gratizzz]

Found it! Now I'll see if I can adjust it in other tables. Tnx once again :).