Texas Instruments TMS320C3x - Manual (Page 654)

PUSH PUSH Integer
13-196
Syntax PUSH src
Operation src
→
*++SP
Operands src register (Rn, 0
≤
n
≤
27)
Opcode
31 24 23 16 8 7 0 15
0 0 0 0 1 1 1 0 1 src 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Description The contents of the src register (32 LSBs) are pushed on the current system
stack. The src is assumed to be a signed integer. The PUSH is performed with
a preincrement of the stack pointer. The integer or mantissa portion of an ex-
tended-precision register (R7–R0) is saved with this instruction.
Cycles 1
Status Bits LUF Unaffected
LV Unaffected
UF Unaffected
N Unaffected
Z Unaffected
V Unaffected
C Unaffected
OVM Operation is not affected by OVM bit value.
Example PUSH R6
Before Instruction After Instruction
R6 02 5C12 8081 R6 02 5C12 8081
SP 8098AE SP 8098AF
LUF 0 LUF 0
LV 0 LV 0
UF 0 UF 0
N 0 N 0
Z 0 Z 0
V 0 V 0
C 0 C 0
Data memory
8098AFh 0 8098AFh 5C128081
633,415,688
1,544,716,417 –62,044
633,415,688
Mode Bit