Addsp (Add Stack Pointer And Immediate Data) - Fujitsu FR Family Instruction Manual

CHAPTER 7 DETAILED EXECUTION INSTRUCTIONS

7.124 ADDSP (Add Stack Pointer and Immediate Data)

Add 4 times the immediate data as a signed extended value, to the value in "R15".
■ ADDSP (Add Stack Pointer and Immediate Data)
Assembler format: ADDSP #s10
Operation: R15 + exts (s8 × 4) → R15
Flag change:
N, Z, V, and C: Unchanged
Execution cycles: 1 cycle
Instruction format:
Example: ADDSP # – 4
238
N Z V C
– – – –
MSB
1 0 1 0
Instruction bit pattern :
R15
8 0 0 0 0 0 0 0
Before execution
0 0 1 1
1010 0011 1111 1111
LSB
s8
R15
7 F F F F F F C
After execution