Motorola DSP56000 Manual page 403

JSR
Instruction Format:
JSR xxx
Opcode:
23
0 0 0 0
Instruction Fields:
xxx=12-bit Short Jump Address=aaaaaaaaaaaa
Timing: 4+jx oscillator clock cycles
Memory: 1+ea program words
Instruction Format:
JSR ea
Opcode:
23
0 0 0 0
Instruction Fields:
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+jx oscillator clock cycles
Memory: 1+ea program words
MOTOROLA
INSTRUCTION DESCRIPTIONS
Jump to Subroutine
16 15
1 1 0 1 0 0 0
16 15
1 0 1 1 1 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
0 a a a a a a
8 7
M M R R R 1 0
JSR
0
a a a a a a
0
0 0 0 0 0 0
A - 137