Texas Instruments TMS320C2XX - Manual (Page 194)

Branch on Auxiliary Register Not Zero BANZ
7-41 Assembly Language Instructions
Syntax BANZ pma [, ind [, ARn] ] Indirect addressing
Operands pma: 16-bit program-memory address
n: Value from 0 to 7 designating the next auxiliary register
ind: Select one of the following seven options:
* *+ *– *0+ *0– *BR0+ *BR0–
BANZ pma [, ind [,ARn] ]
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0 1 1 1 1 0 1 1 1 ARU N NAR
pma
Note: ARU, N, and NAR are defined in Section 6.3, Indirect Addressing Mode (page 6-9).
Execution If (current AR)
≠
0
Then pma
→
PC
Else (PC) + 2
→
PC
Modify (current AR) and (ARP) as specified
Status Bits None
Description Control is passed to the designated program-memory address (pma) if the
contents of the current auxiliary register are not zero. Otherwise, control
passes to the next instruction.The default modification to the current AR is a
decrement by one. N loop iterations can be executed by initializing an auxiliary
register (as a loop counter) to N–1 prior to loop entry. The pma can be either
a symbolic or a numeric address.
Words 2
Cycles for a Single BANZ Instruction
Condition ROM DARAM SARAM External
True 4 4 4 4+4p
False 2 2 2 2+2p
Note: The ’C2xx performs speculative fetching by reading two additional instruction words. If
the PC discontinuity is taken, these two instruction words are discarded.
Opcode
Cycles