HD6433937 Datasheet, PDF (51/521 Pages) Hitachi Semiconductor – Hardware Manual

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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