INSTRUCTION DESCRIPTIONS

DO

Start Hardware Loop

Instruction Format:

DO

#xxx, expr

Opcode:

DO

 

23

20

19

16

15

 

 

 

 

 

8

7

 

0

 

0 0 0

0

0 1 1

0

i i

i

i

i

i

i

i

1

0

0 0

h h h h

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ABSOLUTE ADDRESS EXTENSION

Instruction Fields:

#xxx=12-bit Immediate Short Data = hhhhiiiiiiii, expr=16-bit Absolute Address in 24-bit extension word

Immediate Short Data hhhh i i i i i i i i

000000000000

111111111111

Timing: 6+mv oscillator clock cycles

Memory: 2 program words

MOTOROLA

INSTRUCTION SET DETAILS

A - 95

Page 364
Image 364
Motorola DSP56000, 24-Bit Digital Signal Processor manual Immediate Short Data hhhh i i i i i i i