Build Your Own Arcade Controls Forum

Main => Software Forum => Topic started by: Loopey1 on July 26, 2013, 12:29:16 am

Title: How does MAME handle U37 on Vegas Boards?
Post by: Loopey1 on July 26, 2013, 12:29:16 am

Hello all, I have a question. How does MAME reproduce the security Chip (U37) on the Midway Vegas boards?
I can not seem to find any information on these chips.
(I need to burn a new security Chip for a game running Vegas hardware.)

Title: Re: How does MAME handle U37 on Vegas Boards?
Post by: Haze on July 26, 2013, 10:58:17 am

the security chip provides a serial number, we simulate it.

there are no dumps to burn into a new chip.

Title: Re: How does MAME handle U37 on Vegas Boards?
Post by: Loopey1 on July 26, 2013, 12:07:55 pm

OK, thanks for that answer.

So where in the system does it simulate it? in the vegas.c file or elsewhere?

Title: Re: How does MAME handle U37 on Vegas Boards?
Post by: Haze on July 26, 2013, 01:00:20 pm

src\mame\machine\midwayic.c

Title: Re: How does MAME handle U37 on Vegas Boards?
Post by: Loopey1 on July 26, 2013, 02:58:53 pm

Thank You.