Hi!

I am designing a Programmer for Atmels AT89Cx051 using an Atmel AT89C52.
Port 2 of the C52 is connected to Port 1 of the Device that has to be
programmed and applys the Code Bytes.
Port 1 of the C52 is connected to Port 3 of the device to manage the
Controll Signals.
My Problem: How can I put the Port 1 & 2 Pins of the C52 into a floating
condition (which is needed to power up the AT89Cx051 Devices, referring to
the Atmel Data Book).
Maybe there is a simple Software Solution (i am programming in C).

Thank you

Stefan