Claudio,

Look at the PIC's with a Parallel Slave Port (PSP) function. Most=

of the 40 Pin class PIC16C's and 16F's have this function. I'm
not sure about the 18C chips though.

It's made to do just what you are asking for -- communicate with=

another CPU over a 8 bit parallel interface. It makes the PIC
look like a peripheral chip to the host CPU. While meant for
using the PIC as an intelligent peripheral, you could also use
the PIC as the "Master". The protocol used to communicated
between devices is entirely up to you.

I've used the PIC PSP to enable the PIC as a slave device to a
Motorola 68332 and Rabbit 2000 (Z80-like) CPU.

Matt Pobursky
Maximum Performance Systems

On Mon, 25 Feb 2002 13:59:04 +0100, Claudio Tagliola wrote:
>Hi,
>
>
>I'm trying to communicate with a device throught and 8 bit
>multiplexed data/address bus. I found some things in the=
 piclist
>from 1999, mentioning the PIC17c4x which has something in that
>region.
>However, I need to on another type, a PIC16 or PIC18. Further
>complication, it's not external memory, it's another
>microprocessor (a Beck IPC@CHIP). Any idea's on this kind of
>high speed communications? Is it possible to 'bit-bang' this
>kind of high speed communications?
>
>
>Regards,
>
>Claudio Tagliola

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