Jméno
SRH — shift right and hold
Popis
Shift contents of AC (except sign digit) and BR to the right n places. The positive integer n is treated modulo 32; digits shifted right out of BR15 are lost. (Shifting right n places is equivalent to multiplying by 2-n.) Do not roundoff the result or clear BR. Result is stored in AC and BR. Negative numbers are complemented in AC before and after the shift; hence, ones appear in the digit places made vacant by the shift of a negative number. Digit 6 (the 29 = 512 digit of the address) of the instruction srh n must be a one to distinguish srh n from SRR n described below. SAM is cleared. The time depends upon the size of the integer n.
Odkazy
Podobné instrukce:
FIXME:whirlwind.isa.halt;.
