Add-Add - ZiLOG Z8 PLUS User Manual

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Instruction Format:

ADD dst, src

OPC

Operation:

dst ← dst + src

The source operand is added to the destination operand. Two's complement addition is performed. The sum

is stored in the destination operand. The contents of the source operand are not changed.

Flags:

When the instruction is executed, the flags are set as follows:

1 if a value is carried from the most significant bit of the result; otherwise, 0.

1et if the result is 0; otherwise, 0.

1 if the result is negative; otherwise, 0.

1 if an arithmetic overflow occurs(both operands have the same sign and the result has the

opposite sign); otherwise, 0.

1 if a value is carried from the most significant bit of the result's low-order four bits;

otherwise, 0.

dst

src

dst

OPC (Hex)

dst

src

.75

Address Mode

dst

ADD

Add

src

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