Jméno
MR — multiply and roundoff
Popis
Multiply contents of AC by contents of memory[x]. Roundoff result from BR to 15 significant binary digits and store it in AC. If BR(0) = 1, roundoff is 2-15; if BR(0) = 0, roundoff is 0. Clear BR. The magnitude of contents of memory[x] appears in AR. SAM is cleared. Sign of AC is determined by sign of product. The minimum time of 34 μs occurs of there are all 0's in |AC|; the maximum time of 41 μs occurs when there are all 1's in |AC|. The average time is 37.5μs.
Odkazy
Podobné instrukce:
FIXME:whirlwind.isa.halt;.
