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Word processing
with the
EXCLUSIVE OR
NOT command
Function
Load W6 into the
word accumulator.
Gate the contents of
word accumulator
and word W4 with
EXCLUSIVE OR
NOT.
Assign the gating
result to word W8.
December 2001
Syntax:
XON (EXCLUSIVE OR NOT)
Operands:
B, W, D, K
Action:
Gate the contents of the word accumulator and the operand with EXCLUSIVE
OR NOT. In accordance with the different sizes of operand (B = 8 bit; W = 16
bit; D = K = 32 bit), 8, 16 or 32 bits will be influenced in the accumulator. Thus,
bit 0 of the accumulator is gated with bit 0 of the operand, bit 1 of the
accumulator with bit 1 of the operand, etc. The TNC saves the result of the
operation in the word accumulator.
Example:
Gate the content of words W4 and W6 with EXCLUSIVE OR NOT, and assign
the result to word W8.
Initial state:
Word W4
= 36 AA (hex)
Word W6
= 3C 36 (hex)
Word W8
= ?
STL
Accumulator contents [bit]
31..15 ..................... 7 ................. 0 1 5 .......... 8 7 ............ 0
L W6
0 ..... 0 0 1 1 1 1 0 0 0 0 1 1 0 1 1 0 0 0 1 1 1 1 0 0 0 0 1 1 0 1 1 0
XON
1 ......1 1 1 1 0 1 0 1 0 1 1 0 0 0 1 1 0 0 1 1 0 1 1 0 1 0 1 0 1 0 1 0
W4
= W8
1 ......1 1 1 1 0 1 0 1 0 1 1 0 0 0 1 1 1 1 1 1 0 1 0 1 0 1 1 0 0 0 1 1
Commands
Operand contents [bit]
7 – 113
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