1. Bit right offset SHRB

1.1. Instruction Description

The instruction shifts the operand (S) to the right by (N2) bits into the operand (D) of length (N1). N2 ≤ N1 ≤ Maximum length of operand (D), where operand (S) specifies the lowest bit of its (N2) bit, and operand (D) is moved in from the lowest bit of the (N2) bit specified by operand (S).

指令	SRC	DST	n1	n2
SHLB	Y0	M0	K8	K2

1.1.1. Instruction execution process：

（1）M1,M0 → move out

（2）M3,M2 → M1,M0

（3）M5,M4 → M3,M2

（4）M7,M6 → M5,M4

（5）Y1,Y0 → M7,M6

图1 figure 1.1 Instruction execution process

1.2. The valid operands of the instruction

Input/Output	Data Type	operand	Description
S	ON/OFF	X/Y/C/T/S/M, word positioning (D/V/Z)	address
D	ON/OFF	Y/C/T/S/M, word positioning (D/V/Z)	Source
N0	16 bit integer	D/CV/TV/AI/AO/K/H/V/Z/FD, bit composite word (X/Y/M/C/T/S), local variable (LW)	length
N1	16 bit integer	D/CV/TV/AI/AO/K/H/V/Z/FD, bit composite word (X/Y/M/C/T/S), local variable (LW)	shift

1.3. Example

command table

NETWORK 000

LD X000

SHRB M0 Y0 K16 K1 // Move Y017 out, then move Y016 into Y017,..., and then move M0 into Y0

图2 SHRB