Tony, I've not used the 16F873/874 devices but I have used the
16F876/877. According to the data book (DS30292A), the upper 16 Bytes are
aliased to 70h-7Fh in the 876/877 and are separate in the 873/874. This
provides compatibility with the 73/74 and 76/77 devices. Hopefully
someone else has F873/874 devices to verify this but I think this is the
case. But with Microchip's data books, `Lord only knows'...

   - Tom

At 09:38 AM 4/12/00 +1000, Tony Nixon wrote:
>Can anyone verify that the 16F873/4 RAM at 70h - 7Fh is not the same in
>each page as in the 16F876/7 chips.
>
>Even the newer 16F870/1 chips have these RAM locations duplicated in
>each page.
>
>I was wondering if there was a print error because there is a reference
>to these addresses in the 16F873/4 data sheet.
>
>--
>Best regards
>
>Tony


------------------------------------------------------------------------
Tom Handley
New Age Communications
Since '75 before "New Age" and no one around here is waiting for UFOs ;-)