Download 87AD SERIES - FreeBSD developer home pages
Transcript
CHAPTER 14 INSTRUCTION SET DRLR EA (Rotate Logical Right EA) <1> Operation code : 0 1 0 0 1 0 0 0 1 0 1 1 0 0 0 0 <2> Number of bytes : 2 <3> Number of states : 8 (8) <4> Function EAn–1 ← EAn, EA15 ← CY, CY ← EA0 : 15 0 CY EA Performs 1-bit right rotation including the CY flag of the contents of the extended accumulator. <5> Flags affected : SK← 0, L1 ← 0, L0 ← 0, CY : 0 1 0 0 1 0 0 0 1 0 1 0 0 1 0 0 DSLL EA (Shift Logical Left EA) <1> Operation code <2> Number of bytes : 2 <3> Number of states : 8 (8) <4> Function EAn+1 ← EAn, EA0 ← 0, CY ← EA15 : 15 0 0 CY EA Performs a 1-bit left shift of the contents of the extended accumulator. EA15 is shifted into the CY flag, and 0 is loaded into EA0. <5> Flags affected : SK← 0, L1 ← 0, L0 ← 0, CY 311