32.13.4.3 Explanation of the XCH and XCHP Instructions
XCH and XCHP instructions are exchange instructions. When a XCH
instruction is run, the data in operands D1 and D2 are
switched.
The XCH and XCHP instructions always pass power. When using the
XCH and XCHP instructions, an error will occur if the variables
specified in operands S1 and D1 are not the same type. Designate
the same variable type in operands D1 and D2.
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