Richard Adams wrote:
>
> On Wed, 08 Dec 1999, Jean-Jacques Duquenoy wrote about, 2 SCC cards:
> > Hello,
> >
> > I would like to use 2 SCC at�pra cards .( PA0HPZ like).
> > I read, sometime ago, to use : vector=0 .
> > Do i declare "vector=0" in Z8530drv.conf for the four chips ?
>
> Well the PA0HZP card itself needs a different PAL on the second card, i
> have not used a second card under linux but i suspect it needs to be the
> same as it would under dos for the reason that the PAL has the address in
> it, the first card is always 0x168 the second would then need another
> address.
> So as i see it the first board stays the same, the second would be defined
> with its own address.
I've used 2 PA0HZP cards in a Linux box.
Both cards will have the same vector address (the driver only accepts
one vector address for all SCC's anyway :-)
But the two cards will have a different i/o address. The standard PAL
that is in a PA0HZP card gives you an I/O address range starting at
0x150. The second card needs a different PAL. The I/O address range will
start at 0x158.
Both cards need to be linked with (if I remember correctly) a 5 pin
interconnection cable.
73, Arno pe1icq
