This page describes the following instruction:
- Group: PAIR
- Mnemonic: si
- Opcode: 229d, E5h
- Encoding: 1_110_0101b (PAIR_SRC_DST)
- Pseudo-code: i=sir; pc++
- S:SERIAL I:INNER
- Source is the Serial Input register (SIR).
- Destination is the I register.
The 'S' source is a deserialised byte received over the serial bus. See Device Communication for how this works. The I register can act as an automatic while loop counter. See Inner Counter for details.