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MICROPROCESSOR INSTRUCTION REFERENCE->MUL
This instruction multiplies the unsigned 8 bit integers in the accumulator and register B. The low order byte of the 16 bit product is placed in the accumulator and the high order byte is placed in register B.
If the product is greater than 255 the overflow flag is set, otherwise it is cleared
The carry flag is always cleared.
Assembler Mnemonic: MUL AB