May 2024
Intermediate to advanced
889 pages
30h 8m
English
book
The X 86 Microprocessors: Architecture, Programming and Interfacing (8086 to Pentium) 2nd Edition by Pearson
by Lyla B. Das
Content preview from The X 86 Microprocessors: Architecture, Programming and Interfacing (8086 to Pentium) 2nd Edition by Pearson
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3-44
THE
x86 MICROPROCESSORS
Modifies Flags: CF OF
C 07
RCL BL, CL ;rotate left through carry, BL, by the count in CL
RCL CX, 1 ;rotate left through carry the word in CX once
RCR – Rotate Through Carry Right.
Usage: RCR dest, count.
C07
This instruction causes the right most bit (MSB) to enter the carry flag, and the CF enters
through the left end (MSB). Thus, due to one shift operation, the LSB enters the CF, and
the CF gets into the MSB position.
Modifies Flags: CF OF
RCR BYTE PTR [SI], 1 ;rotate right through carry, the byte
pointed by SI, once
RCR WORD PTR [DI][BX], CL ;rotate right through carry the word
pointed by EA = SI + BX, by the ...
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