Foundation Logic View Configuration Manual page 49

DF65 – LogicView Configuration Manual
INPUTS
IN1
0
0
0
0
1
1
BWL
BOOL
Y_BIT
Y_BIT
Y_BIT
CLASS
I
P
O
V
If the inputs are bytes, the XOR function is done bit-to-bit, i.e.:
IN1= (BIT17)(BIT16)(BIT15)(BIT14)(BIT13)(BIT12)(BIT11)(BIT10)
IN2= (BIT27)(BIT26)(BIT25)(BIT24)(BIT23)(BIT22)(BIT21)(BIT20)
OUT= (BIT17XORBIT27)..............................(BIT11XORBIT21)
Example: IN1= 01011100
IN2= 11110000
OUT= 10101100
Control Word - Function NXOR
This function associates the AND and XOR functions. So, the logic output is the XOR logic function
inverted.
The BWL block allows expansion to up to 14 inputs. In the table below we present logic functions for
more than 2 inputs and their respective outputs.
IN2 ... INn-1
0 0
0 0
0 1
0 1
...
1 1
1 1
BITWISE LOGIC
EN ENO
BWL
IN1
IN2
OUT
INn
MNEM DESCRIPTION
EN INPUT ENABLE
IN1 INPUT NUMBER 1
IN2 INPUT NUMBER 2
IN3 INPUT NUMBER 3
... ...
... ...
INn-1 INPUT NUMBER N-1
INn INPUT NUMBER N
CTW CONTROL WORD
ENO OUTPUT ENABLE
OUT OUTPUT
OPR LOGICAL OPERATION
IN1 IN2 OUT
0 0 0
0 1 1
1 0 1
1 1 0
OUTPUTS
INn AND NAND
0 0 1
1 0 1
0 0 1
1 0 1
0 0 1
1 1 0
BOOL
ANY_BIT
OR NOR XOR
0 1 0
1 0 1
1 0 1
1 0 0
1 0
1 0 1
1 0 0
IF EN=1 THEN
ENO := 1
OUT := IN1 BWL IN2 BWL ...
BWL INn
IF CTW > 2 THEN
OUT := NOT( OUT )
ELSE
ENO := 0
OUT := 0
; ---------------------------------------
BWL = IS THE LOGIC
OPERATION
CTW - PARAMETER DEFINES
THE LOGIC OPER
0 = AND ; 3 = NOT(AND)
1 = OR ; 4 = NOT(OR)
2 = XOR ; 5 = NOT(XOR)
TYPE
BOOLEAN
ANY_BIT
ANY_BIT
ANY_BIT
ANY_BIT
ANY_BIT
WORD
BOOLEAN
BOOLEAN/BYTE
WORD
NXOR
1
0
0
1
0
1
2.33