Chapter 16AppendixXVI - 60 Extension Instruction SpecificationMACBU (unsigned byte data multiply and accumulate instruction: register to register)[Instruction format (macro name)]MACBU Dm, Dn[Assembler mnemonic]udf33 Dm, Dn[Operation]This instruction performs multiply and accumulate operation by means of the multiplier and the adder provided inthe extension arithmetic unit.The instruction multiplies the content of Dm (unsigned 8-bit integer: multiplicand) by the content of Dn (unsigned8-bit integer: multiplier), adds this product to the 32-bit accumulative sum that is stored in the multiply andaccumulate register MCRL and stores the 32-bit result in the multiply and accumulate register MCRL.The register outputs a multiply and accumulate overflow detection flag “1” to the register MCVF if theaccumulative sum data overflows beyond 32 bits during addition of the product and the accumulative sum.[Flag changes][Note for programming]An instruction other than extension instructions that requires 1 or more cycles must be inserted between thisinstruction and a next extension instruction.Flag Change ConditionV -C -N -Z -
