MOVZ Instruction

Purpose:

To convert an unsigned integer to a wider unsigned integer

Format:

opcode src.rx, dst.wy

Operation:

dst <- zero extended src;

Condition
Codes:

N <- 0;
Z <- dst EQL 0;
V <- 0;
C <- C;

Exceptions:

None

Opcodes:

9B	MOVZBW	Move Zero-Extended Byte to Word
9A	MOVZBL	Move Zero-Extended Byte to Long
3C	MOVZWL	Move Zero-Extended Word to Long

Description:

For MOVZBW, the low 8 bits of the destination are replaced by the source operand. the top 8 bits are set to 0. The source operand is unaffected.

For MOVZBL, the low 8 bits of the destination are replaced by the source operand. the top 24 bits are set to 0. The source operand is unaffected.

For MOVZBW, the low 16 bits of the destination are replaced by the source operand. the top 16 bits are set to 0. The source operand is unaffected.