Section 2 CPU
Rev. 7.00 Mar 10, 2005 page 52 of 652
REJ09B0042-0700
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 from active mode to a power-down mode. See
section 5, Power-Down Modes, for details.
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
Notes: * Size: Operand size
B: Byte
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