41
Table 2.17
System Control Instructions (cont)
Instruction
Instruction Code
Operation
Execution
Cycles
T Bit
STS
MACL,Rn
0000nnnn00011010
MACL
→
Rn
1
—
STS
PR,Rn
0000nnnn00101010
PR
→
Rn
1
—
STS.L
MACH,@–Rn
0100nnnn00000010
Rn–4
→
Rn, MACH
→
(Rn)
1
—
STS.L
MACL,@–Rn
0100nnnn00010010
Rn–4
→
Rn, MACL
→
(Rn)
1
—
STS.L
PR,@–Rn
0100nnnn00100010
Rn–4
→
Rn, PR
→
(Rn)
1
—
TRAPA
#imm
11000011iiiiiiii
PC/SR
→
stack area,
(imm
×
4 + VRR)
→
PC
8
—
Note:
The execution cycles shown in the table are minimums.
The actual number of cycles may be increased:
1. When contention occurs between instruction fetches and data access
2. When the destination register of the load instruction (memory
→
register) and the
register used by the next instruction are the same.
Содержание HD6417032
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