Instruction: Set discrete bits of a value to the state of !C.

MUXNC Destination, < # > Mask

Result: Destination's bits, indicated by Mask, are set to the state of !C.

Destination (d-field) is the register whose bits described by Mask are affected by !C.
Mask (s-field) is a register or a 9-bit literal whose value contains high (1) bits for every bit in Destination to set to the inverse of the C flag's state.

Opcode Table:

–INSTR– ZCRI –CON– –DEST– –SRC–	Z Result	C Result	Result	Clocks
011101 001i 1111 ddddddddd sssssssss	Result = 0	Parity of Result	Written	4

Concise Truth Table:

In					Out
Destination	Source	Z	C	Effects	Destination	Z	C
$0000_0000; 0	$0000_0001; 1	-	0	wz wc	$0000_0001; 1	0	1
$0000_0000; 0	$0000_0001; 1	-	1	wz wc	$0000_0000; 0	1	0
$0000_0000; 0	$0000_0003; 3	-	0	wz wc	$0000_0003; 3	0	0
$0000_0000; 0	$0000_0003; 3	-	1	wz wc	$0000_0000; 0	1	0
$AA55_2200; -1,437,261,312	$1234_5678; 305,419,896	-	0	wz wc	$BA75_7678; -1,166,707,080	0	1
$AA55_2200; -1,437,261,312	$1234_5678; 305,419,896	-	1	wz wc	$A841_2000; -1,472,126,976	0	0
$AA55_2200; -1,437,261,312	$FFFF_FFFF; -1	-	0	wz wc	$FFFF_FFFF; -1	0	0
$AA55_2200; -1,437,261,312	$FFFF_FFFF; -1	-	1	wz wc	$0000_0000; 0	1	0

Explanation

MUXNC sets each bit of the value in Destination, which corresponds to Mask's high (1) bits, to the !C state. All bits of Destination that are not targeted by high (1) bits of Mask are unaffected. This instruction is handy for setting or clearing discrete bits, or groups of bits, in an existing value.

If the WZ effect is specified, the Z flag is set (1) if Destination's final value is 0. If the WC effect is specified, the C flag is set (1) if the resulting Destination contains an odd number of high (1) bits. The result is written to Destination unless the NR effect is specified.