[oopic] Re: I/O problem

--- In oopic@yahoogroups.com, "dan michaels" <oric_dan@...> wrote:
>
> --- In oopic@yahoogroups.com, J M <drjack199@> wrote:
> >
>
>
> As I underatand it, the original s-board was designed before the
> later crop of oopic chips that dedicate I/O lines 22+23 for RS232
> UART.
>
> So, when you plug a version II or III chip into the board, you should
> not try using those pins for anything else besides RS232. Use some
> other pins.
>
> Also, it's best to reserve I/O lines 1-7 for A/D channels, and not
> use them for digital I/O, as there are some allocation problems when
> trying to use some of those lines for A/D and others for digital I/O.
>

And maybe reserve IOLines 8..15 for digital inputs as these lines can
have internal pull-up resistors with:

OOPic.PullUp = 1

Richard

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