MAMEWorld Forums - Programming - Re: Few Dip switch questions

> > 1) The best way to work out the address at which it reads a bank of DIP switches is
> > from the schematic. Look at the address decode logic and work out where the DIP
> > switch is mapped.
> >
> > 2) It's very rare for DIPs within a single bank to have different polarity to each
> > other. The text description refers to the state of the feature, not the position of
> > the switch. Some some games, require a switch to be on to turn a feature off, and
> > that's far more likely than one of the switches having the opposite polarity.
> Unless
> > you actually know from the schematic that the polarity of one switch is reversed,
> > don't mess with it. That said, the way to invert a DIP switch is to prefix the
> number
> > with a "!", but this should usually only be done for an entire bank (e.g. see
> dkong.c
> > and mario.c).
> >
> > Make sure you're 100% certain of the DIP locations before submitting the code.
> > Cleaning up incorrect information later can be a pain.
>
> Thanks for the reply. I might have to leave that in that case then, I haven't got any
> schematics and I can't seem to find any on the net that have been scanned (or even
> any for sale!). I have my Robocop 2 board but it's probably more difficult trying to
> trace the tracks and where they go than looking at the schematics!
> At least I can add some of the diplocations for the dipswitches listed in the driver
> anyway.

For Vas's benefit, this is what tb2000 is talking about. It was acquired by Guru in a large collection, but I don't recall how. (about 1.5 yrs ago). It is clearly badly translated from Japanese. And tb2000 is right, there's no schematics, not so much as a manual scanned and online for Robocop 2.

- Stiletto