NXP Semiconductors
PT2001SWUG
PT2001 programming guide and instruction set
PT2001SWUG
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User guide
Rev. 3.0 — 29 April 2019
132 / 153
sub
Description:
Subtracts the value contained in the op2 register from the value contained in op1 register
and places the result in the res register.
Operation:
(Source1) – (Source2) → (Destination)
Assembler syntax:
sub op1 op2 res;
Operands:
•
op1 – One of the registers listed in the operand
•
op2 – One of the registers listed in the operand
•
res – One of the registers listed in the operand
Condition register:
•
RZ – Addition or subtraction result is zero
•
RS – Addition or subtraction result is negative
•
UU – Unsigned underflow
•
UO – Unsigned overflow
•
SU – Signed underflow
•
SO – Signed overflow
Table 120. sub instruction format
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
0
1
0
1
0
res
1
op2
op1