Subject: Re: more on the 400-series utility chip
To: mike smith <email@example.com>
From: Herb Peyerl <firstname.lastname@example.org>
Date: 03/21/1997 07:42:20
mike smith <email@example.com> wrote:
> Am I getting too demanding yet? How about bit assignments
> Any idea which IPL this part is normally on?
> > as far as pio goes:
> > piobase+0x0 parallel input register
> > piobase+0x4 input polarity register
> > piobase+0x8 input edge/level register
> Teaser, I'm sure. Where's the pio register? Wonder if it
> actually goes anywhere on the 425?
hmmm... I'm wondering if this is just a way of directing the util
chip to do pio for you? ie: the intel equivalents to inb/outb?
naw, that's dumb... anyway, I can't find any additional references to
it in my docs.