ADDL ACC,loc32
6-36
ADDL ACC,loc32 Add 32-bit Value to Accumulator
SYNTAX OPTIONS OPCODE OBJMODE RPT CYC
ADDL ACC,loc32 0000 0111 LLLL LLLL X Y N+1
Operands ACC Accumulator register
loc32 Addressing mode (see Chapter 5)
Description Add to the ACC register the 32-bit content of the location pointed to by the
“loc32” addressing mode:
ACC = ACC + [loc32];
Flags and
N After the addition, the N flag is set if bit 31 of the ACC is 1, else N is cleared.
Modes
Z After the addition, the Z flag is set if the ACC is zero, else Z is cleared.
C If the addition generates a carry, C is set; otherwise C is cleared.
V If an overflow occurs, V is set; otherwise V is not affected.
OVC If (OVM = 0, disabled) then if the operation generates a positive overflow,
then the counter is incremented and if the operation generates a negative
overflow, then the counter is decremented. If (OVM = 1, enabled) then the
counter is not affected by the operation.
OVM If overflow mode bit is set; then the ACC value will saturate maximum
positive (0x7FFFFFFF) or maximum negative (0x80000000) if the operation
overflows.
Repeat If this operation is repeated, then the instruction will be executed N+1 times.
The state of the Z, N, C flags will reflect the final result. The V flag will be set if
an intermediate overflow occurs. The OVC flag will count intermediate
overflows, if overflow mode is disabled.
Example
; Calculate the 32-bit value: VarC = VarA + VarB
MOVL ACC,@VarA ; Load ACC with contents of VarA
ADDL ACC,@VarB ; Add to ACC the contents of VarB
MOVL @VarC,ACC ; Store result into VarC
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