Changes

Z80

5 bytes added, 10 March

/* 16-bit Arithmetic group */

| adc hl,Q || 11101101 01qq1010 || 4 || 15 (4,4,4,3) || + || + || + || + || + || V || 0 || + || hl += Q + cf ||Add with Carry

|-

| sbc hl,Q || 11101101 01qq0010 || 4 || 15 (4,4,4,3) || + || + || + || + || + || V || 1 || + || hl -= Q + cf ||~~Sub~~ Subtract with Carry

|-

| dec Q || 00qq1011 || 2 || 6 (6) || - || - || - || - || - || - || - || - || Q -= 1 ||rowspan=2|Decrement

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