Hardware manual

Rev. 3.0, 09/98, page 41 of 361
2.5.7 System Control Instructions
Table 2.10 describes the system control instructions. Figure 2.9 shows their object code formats.
Table 2.10 System Control Instructions
Instruction Size Function
RTE  Returns from an exception-handling routine.
SLEEP  Causes a transition to the power-down state.
LDC B Rs → CCR, #imm → CCR
Moves immediate data or general register contents to the condition code
register.
STC B CCR → Rd
Copies the condition code register to a specified general register.
ANDC B CCR ∧ #imm → CCR
Logically ANDs the condition code register with immediate data.
ORC B CCR ∨ #imm → CCR
Logically ORs the condition code register with immediate data.
XORC B CCR ⊕ #imm → CCR
Logically exclusive-ORs the condition code register with immediate data.
NOP  PC + 2 → PC
Only increments the program counter.
Note: Size: operand size
B: Byte