Zilog Z80
From Misc Data Digs
SLL[edit | edit source]
SLL (Shift Logical Left) is the counterpart to SRL (Shift Logical Right), shifting an register's value to the left and setting bit 0 to 1. The following opcodes are reserved for this instruction.
- CB30 - SLL B
- CB31 - SLL C
- CB32 - SLL D
- CB33 - SLL E
- CB34 - SLL H
- CB35 - SLL L
- CB36 - SLL (HL)
- CB37 - SLL A
IN (C)[edit | edit source]
Opcode ED70 reads from I/O port C, setting the flags and discarding the result.
OUT (C),0[edit | edit source]
Opcode ED71 outputs 0 to port C.
(Source: The Undocumented Z80 Documented)