This page describes the following instruction:
- Group: PAIR
- Mnemonic: pb
- Opcode: 250d, FAh
- Encoding: 1_111_1010b (PAIR_SRC_DST)
- Pseudo-code: pc+=pir
- P:PARALLEL B:BRANCH
- Source is the Parallel Input register (PIR).
- Add source to the local page index register (L).
The 'P' source is a data byte received on the parallel bus. See Device Communication for how this works.