Hi guys, very nice site.

In the datasheet for this specific chip I read that if I write a 0xFF to PORT0, it will place it in high impedance mode (inputs). I was wondering if you can attain the state of the pins by reading PORT0 or would you get the latched data? I was using the PIC16F628 before and the chip has seperate tristate and port registers and this organization is confusing me a bit.

Also do you guys know of a chip that can interrupt the CPU on the status change of a port? I interfaced my 16F628 with a PC keyboard and it would be nice to interrupt the CPU when the keyboard wants to send something instead of waiting for the keyboard to send (and locking the CPU in a loop while waiting).