This page describes the following instruction:
- Group: PAIR
- Mnemonic: pi
- Opcode: 245d, F5h
- Encoding: 1_111_0101b (PAIR_SRC_DST)
- Pseudo-code: i=pir; pc++
- P:PARALLEL I:INNER
- Source is the Parallel Input register (PIR).
- Destination is the I register.
The 'P' source is a data byte received on the parallel bus. See Device Communication for how this works. The I register can act as an automatic while loop counter. See Inner Counter for details.