January 2012 8.15 Command Set 1667
Word processing
with the LOAD NOT
command
Syntax: LN (LOAD NOT)
Operands: B, W, D, K
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 STL Accumulator
content
Operand content
Invert byte B6, and load
into the word accu.
LN B6 2A
Gate the contents of the
word accumulator and
byte B5 with AND.
A B5 B6
Assign the gating result to
byte B8.
= B8 22
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