Texas Instruments TMS320C3x 사용자 설명서

 Repeat Block

13-209

  Assembly Language Instructions

RPTB 

 src

src 

→

 RE

1 

→

ST (RM)

Next PC 

→

 RS

src long-immediate addressing mode

31

24 23

16

8 7

0

15

0 1 1 0 0

0

0

1

src

RPTB allows a block of instructions to be repeated RC register + 1 times with-
out any penalty for looping. This instruction activates the block repeat mode
of updating the PC. The 

src operand is a 24-bit unsigned immediate value that

is loaded into the repeat end-address (RE) register. A 1 is written into the re-
peat mode bit of status register ST (RM) to indicate that the PC is being up-
dated in the repeat mode. The address of the next instruction is loaded into the
repeat start-address (RS) register.

RE should be greater than or equal to RS (RE 

w

 RS). Otherwise, the code

does not repeat, even though the RM bit remains set to 1.

4

LUF  

Unaffected

LV   

Unaffected

UF   

Unaffected

N Unaffected
Z    

Unaffected

V    

Unaffected

C    

Unaffected

Operation is not affected by OVM bit value.