Stereo System User Manual

MOTOROLA DSP96002 USER’S MANUAL A - 31
Bcc Branch Conditionally Bcc
Operation:
If cc, then PC+xx → PC
else PC+1 → PC
If cc, then PC+xxxx → PC
else PC+1 → PC
If cc, then PC+Rn → PC
else PC+1 → PC
Description:
If the specified condition is true, program execution continues at location PC+displacement. The PC con-
tains the address of the next instruction. If the specified condition is false, the PC is incremented and
program execution continues sequentially. The displacement is a 2’s complement 32-bit integer that rep-
resents the relative distance from the current PC to the destination PC. Short Displacement, Long Dis-
placement 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.
"cc" may specify the following conditions:
Mnemonic Condition
CC (HS) - carry clear (higher or same) C = 0
CS (LO) - carry set (lower) C = 1
EQ - equal Z = 1
GE - greater or equal N && V = 0
GT - greater than Z v (N && V) = 0
HI - higher Z v C = 0
LE - less or equal Z v (N && V) = 1
LS - lower or same Z v C = 1
LT - less than N && V = 1
MI - minus N = 1
NE(Q) - not equal Z = 0
PL - plus N = 0
VC - overflow clear V = 0
VS - overflow set V = 1
CCR Condition Codes: Not affected.
ER Status Bits: Not affected.
IER Flags: Not affected.
Assembler Syntax:
Bcc label (short)
Bcc label
Bcc Rn