Bsr branch to subroutine bsr – Motorola DSP96002 User Manual
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DSP96002 USER’S MANUAL
MOTOROLA
BSR
Branch to Subroutine
BSR
11
1111
0000
0000
31
14 13
0
PC RELATIVE DISPLACEMENT
0000
0011
0100
0000
00
11
1111
0000
0000
31
14 13
0
0000
0011
0100
001R
11
1111
0aaa
aaaa
31
14 13
0
0000
0011
11aa
aaaa
aa
Operation:
PC
→
SSH; SR
→
SSL; PC+xx
→
PC
PC
→
SSH; SR
→
SSL; PC+xxxx
→
PC
PC
→
SSH; SR
→
SSL; PC+Rn
→
PC
Assembler Syntax:
BSR label (short)
BSR label
BSR Rn
Description:
The address of the instruction immediately following the BSR instruction and the status register are pushed
onto the stack. Program execution then continues at location PC+displacement. The PC contains the ad-
dress of the next instruction. The displacement is a 2’s complement 32-bit integer that represents the
relative distance from the current PC to the destination PC. Short Displacement, Long Displacement and
Address Register PC Relative addressing modes may be used. The Short Displacement 15-bit data is
sign extended to form the PC relative displacement. See Section A.10 for restrictions.
CCR Condition Codes: Not affected.
ER Status Bits: Not affected.
IER Flags: Not affected.
Instruction Format:
BSR label (short)
Instruction Format:
BSR label
Instruction Format:
BSR Rn