NXP Semiconductors
PT2001SWUG
PT2001 programming guide and instruction set
PT2001SWUG
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User guide
Rev. 3.0 — 29 April 2019
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shrs
Description:
Shift the op1 register right. The shift is single or multiple according to the op2 register
value (factor).
The op1 register is handled as a two's complement number. The MBS (sign bit) is
unchanged during the shift operation. To be completed, the shift operation requires a
number of ck clock cycles corresponding to the op2 register value.
Operation:
(Source1) >> factor → (Source)
Assembler syntax:
shrs op1 op2;
Operands:
•
op1 – One of the registers listed in the operand
•
op2 – One of the registers listed in the operand
Condition register:
•
SB – Shift out bit
•
ML – Multiplication shift precision loss
Table 91. shrs instruction format
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
0
1
0
1
1
0
1
1
1
op2
op1