Word Execution With The Exclusive Or Command - HEIDENHAIN TNC 415 Technical Manual

Word execution with the EXCLUSIVE OR command

Operands: B, W, D, K
Operation:
The contents of the Word Accumulator and the contents of the operand (B, W, D, K) are gated with
EXCLUSIVE OR. 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 in the Accumulator is gated with bit 0 in the operand
Bit 1 in the Accumulator is gated with bit 1 in the operand and so on.
The result of the operation is stored in the Word Accumulator.
Example:
The contents of Byte B5 and Byte B6 are to be gated with EXCLUSIVE OR and the result assigned
to Word W8.
Initial state
Line Instruction
Bit
1 L B6
2 XO B5
3 = W8
Line 1: The contents of Byte B6 are loaded into the Accumulator.
Line 2: The contents of the Word Accumulator and Byte B5 are gated with EXCLUSIVE OR.
Line 3: The gating result is assigned to Word W8.
7-62 TNC 407/TNC 415/TNC 425
Byte B5 = 2A
Byte B6 = 36
Word W8 = ?
Accumulator Contents
31 . . . 15
... x x x x x x x x x x x x x x x x x x
... 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 1 1 0
... 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0
... 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0
3 Commands
(hex)
(hex)
7 0
Operand Contents
15 8 7 0
00110110
00101010
00000000 00011100
01.98