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ILLEGALRTINOP23 16 15 87 0I 0 0 0 0 0 0 0 o I 0 0 0 0 0 0 0 01 0 0 0 0 0 1 0 123 16 15 87 0I 0 0 0 0 0 0 0 o I 0 0 0 0 0 0 0 o I 0 0 0 0 0 1 0 o I23 16 15 87 0I 0 0 0 0 0 0 0 o I 0 0 0 0 0 0 0 01 0 0 0 0 0 0 0 o IA.10.4 Parallel Instruction Encoding <strong>of</strong> the Operation CodeThe operation code encoding for the instructions which allow parallel moves is dividedinto the multiply and non multiply instruction encodings shown in the following sub<strong>section</strong>.Multiply Instruction EncodingThe a-bit operation code for multiply instructions allowing parallel moves has differentfields than the nonmultiply instruction's operation code.The a-bit operation code=1 aaa dkkk whereQQQ=selects the inputs to the multiplierkkk = three unencoded bits k2, k1, kOd = destination accumulatord=O-+Ad=1-+BTable A-27 Operation Code KO-2 DecodeCode k2 k1 kO-0 positive mpyonly don't round1 negative mpy and ace round

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