Word Processing With The Load Not Command - HEIDENHAIN iTNC 530 HSCI Technical Manual

Word processing
with the LOAD NOT
command
1764
LN (LOAD NOT)
Syntax:
B, W, D, K
Operands:
Action:
Load the complement of the addressed operand, or of a constant, into the
word accumulator. If necessary, the accumulator is supplemented with the
correct algebraic sign. In contrast to logical operations, you must always begin
a sequence of word gating operations with an L command. You cannot replace
the L command with a logical gating instruction.
Example:
Gate the complement of byte B6 and byte B5 with AND, and assign the result
to byte B8.
Initial state:
Byte B5 = 2A (hex)
Byte B6 = B6 (hex)
Byte B8 = ?
Function
Invert byte B6, and load
into the word accumulator
Gate the contents of the
word accumulator and
byte B5 with AND.
Assign the gating result to
byte B8.
STL Accumulator
content
LN B6 2A
A B5
= B8
HEIDENHAIN Technical Manual iTNC 530 HSCI
Operand content
B6
22