On Sun, 2009-11-01 at 09:22 -0800, Harold Hallikainen wrote:
> > I'm building a PIC circuit to interface to a very old computer that uses
> > 0v for "1" and -10V for "0".
> > (
http://www.youtube.com/watch?v=8EKBNfm5B4U)
> >
> > It will make for simpler interface circuits if I run the PIC from 0V and
> > -5V. (I.E. 0V on Vcc pins and -5V on Gnd pins).
> >
> > Are there any issues with doing this ?
> >
> > PeterO
>
>
> I don't see any issues. The PIC doesn't know or care where ground is. Just
> make sure all the connected circuitry agrees, such as debuggers and
> programmers.
Good point.....
But I'm hoping to be able to debug the code in a test rig rather than
while it is connected to the actual old machine.....
PeterO
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