Motorola DSP56000 Manual page 335

24-bit digital signal processor
Hide thumbs Also See for DSP56000:
Table of Contents

Advertisement

BTST
Instruction Format:
BTST
#n,X:ea
BTST
#n,Y:ea
Opcode:
23
0
0
0
0
Instruction Fields:
#n=bit number=bbbbb,
ea=6-bit Effective Address=MMMRRR
Effective
Addressing Mode
(Rn)-Nn
(Rn)+Nn
(Rn)-
(Rn)+
(Rn)
(Rn+Nn)
-(Rn)
Absolute address
where "rrr" refers to an address register R0-R7
Timing: 4+mvb oscillator clock cycles
Memory: 1+ea program words
A - 66
INSTRUCTION DESCRIPTIONS
Bit Test
16
15
1
0
1
1
0
1
M
OPTIONAL EFFECTIVE ADDRESS EXTENSION
M M M R R R
0 0 0 r r r
0 0 1 r r r
0 1 0 r r r
0 1 1 r r r
1 0 0 r r r
1 0 1 r r r
1 1 1 r r r
1 1 0 0 0 0
INSTRUCTION SET DETAILS
8
7
M
M
R
R
R
0
S
Memory SpaceS
X Memory
0
Y Memory
1
BTST
0
1
b
b
b
b
b
Bit Number bbbbb
00000
10111
MOTOROLA

Advertisement

Table of Contents
loading

This manual is also suitable for:

Dsp56k

Table of Contents