INSTRUCTION DESCRIPTIONS

BCHG

Bit Test and Change

Instruction Format:

BCHG #n,X:pp

BCHG #n,Y:pp

Opcode:

BCHG

 

23

16

15

8

7

0

 

 

 

 

 

 

 

 

0 0 0 0 1 0 1 1

1 0 p p

p p p p

0 S 0 b b b b b

 

 

 

 

 

 

 

 

 

Instruction Fields:

#n=bit number=bbbbb,

ea=6-bit I/O Short Address=pppppp

I/O Short Address pppppp

Memory SpaceS

Bit Number bbbbb

000000

X Memory

0

00000

Y Memory

1

 

 

10111

111111

 

 

 

Timing: 4+mvb oscillator clock cycles

Memory: 1+ea program words

MOTOROLA

INSTRUCTION SET DETAILS

A - 45

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Image 314
Motorola DSP56000, 24-Bit Digital Signal Processor manual Short Address pppppp Memory SpaceS Bit Number bbbbb