Set
The Set microinstruction sets a sequence of consecutive bits of a register to a specified value.
Parameters:
Start: the leftmost bit of the register that is to be set. This must be an integer from 0 to one less than the width of the register.
NumBits: the number of consecutive bits in the register to be set
Value: the base-10 value to which the bits are to be set. This value must fit in the designated bits as either an unsigned or signed (two's complement) decimal. Therefore the value must be from -2w-1 to 2w-1, where w is the number of bits to be set in the register.