Fujitsu CM71-00101-5E User Manual

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CHAPTER 7  DETAILED EXECUTION INSTRUCTIONS

The "STM1" instruction accepts registers in the range R8 to R15 as members of the 
parameter "reglist" (See Table 7.132-1.).
Registers are processed in descending numerical order.
If "R15" is specified in the parameter "reglist", the contents of "R15" retained before the 
instruction is executed will be written to memory.

■

Assembler format:

STM1 (reglist)

Operation:

The following operations are repeated according to the number of registers specified in the
parameter "reglist".

R15 – 4 

→ R15 

Ri 

→ (R15)

Flag change:    

N, Z, V, and C: Unchanged

Execution cycles:  

If "n" is the number of registers specified in the parameter "reglist", the execution cycles
re

q

uired are as follows.

a × n + 1 cycles

Instruction format:  

N

Z

V

C

–

–

–

–

Bit

Register

Bit

Register

7

R8

3

R12

6

R9

2

R13

5

R10

1

R14

4

R11

0

R15

MSB

LSB

1

0

0

0

1

1

1

1

reglist