This page describes the following instruction:
- Group: PAIR
- Mnemonic: sb
- Opcode: 234d, EAh
- Encoding: 1_110_1010b (PAIR_SRC_DST)
- Pseudo-code: pc+=sir
- S:SERIAL B:BRANCH
- Source is the Serial Input register (SIR).
- Add source to the local page index register (L).
The 'S' source is a deserialised byte received over the serial bus. See Device Communication for how this works.