INSTRUCTION DESCRIPTIONS

RTI

Return from Interrupt

RTI

Condition Codes:

15

14

 

13

12

11

10

9

8

7

6

 

5

4

3

2

1

0

LF

DM

T

**

 

S1

S0

 

I1

I0

S

L

E

U

N

Z

 

V

C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MR

 

 

 

 

 

 

 

 

 

 

CCR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

S — Set according to the value pulled from the stack

L — Set according to the value pulled from the stack

E — Set according to the value pulled from the stack

U — Set according to the value pulled from the stack

N — Set according to the value pulled from the stack

Z — Set according to the value pulled from the stack

V — Set according to the value pulled from the stack

C — Set according to the value pulled from the stack

Instruction Format:

RTI

Opcode:

 

23

 

 

 

 

 

 

16

15

 

 

 

 

 

 

8

7

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

1

0

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Instruction Fields:

None

Timing: 4+rx oscillator clock cycles

Memory: 1 program word

MOTOROLA

INSTRUCTION SET DETAILS

A - 267

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Motorola DSP56000, 24-Bit Digital Signal Processor manual Opcode Instruction Fields