MOVH	$0xff000000, FPSR  // ERROR "illegal combination"
	MOVB	$0xffffff00, CPSR  // ERROR "illegal combination"
	MOVH	$0xffffff00, CPSR  // ERROR "illegal combination"
	MOVB	$0xfffffff0, FPSR  // ERROR "illegal combination"
	MOVH	$0xfffffff0, FPSR  // ERROR "illegal combination"
	MOVB	(R1), [R0-R4]      // ERROR "illegal combination"
	MOVB	[R0-R4], (R1)      // ERROR "illegal combination"

sign extended to implicit infinite precision; otherwise it is zero extended.
It is then truncated to fit in the result type's size.
For example, if <code>v := uint16(0x10F0)</code>, then <code>uint32(int8(v)) == 0xFFFFFFF0</code>.
The conversion always yields a valid value; there is no indication of overflow.
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When converting a <a href="#Numeric_types">floating-point number</a> to an integer, the fraction is discarded