oGate Object

A Processing Object that can be configured to do multi-input logic gate operations like AND, NAND, OR, NOR, XOR, XNOR, NOT, LATCH, Etc.

The following table lists the size and availability of the oGate Object and its variations.

Object	Size	Description	A1	A2	B1	B2	C1
oGate	3 Bytes	Copies the value of an oLogic Object to another oLogic Object.	x	x	x	x	x
oGate2	4 Bytes	Copies the value of an oLogic Object to 2 other oLogic Objects.	x	x	x	x	x
oGate3	5 Bytes	Copies the value of an oLogic Object to 3 other oLogic Objects.	x	x	x	x	x
oGate4	6 Bytes	Copies the value of an oLogic Object to 4 other oLogic Objects.	x	x	x	x	x
oGate5	7 Bytes	Copies the value of an oLogic Object to another oLogic Object.	x	x	x	x	x
oGate6	8 Bytes	Copies the value of an oLogic Object to 2 other oLogic Objects.	x	x	x	x	x
oGate7	9 Bytes	Copies the value of an oLogic Object to 3 other oLogic Objects.	x	x	x	x	x
oGate8	10 Bytes	Copies the value of an oLogic Object to 4 other oLogic Objects.	x	x	x	x	x
oGateC	5 Bytes	Clocked copy of an oLogic Object's value to another oLogic Object.			x	x	x
oGate2C	6 Bytes	Clocked copy of an oLogic Object's value to 2 other oLogic Objects.			x	x	x
oGate3C	7 Bytes	Clocked copy of an oLogic Object's value to 3 other oLogic Objects.			x	x	x
oGate4C	8 Bytes	Clocked copy of an oLogic Object's value to 4 other oLogic Objects.			x	x	x
oGate5C	9 Bytes	Clocked copy of an oLogic Object's value to another oLogic Object.			x	x	x
oGate6C	10 Bytes	Clocked copy of an oLogic Object's value to 2 other oLogic Objects.			x	x	x
oGate7C	11 Bytes	Clocked copy of an oLogic Object's value to 3 other oLogic Objects.			x	x	x
oGate8C	12 Bytes	Clocked copy of an oLogic Object's value to 4 other oLogic Objects.			x	x	x

Operation:

An oGate Object takes the value of the oLogic Object pointed to by one or more Input pointers and performs a logical OR operation. The logical OR operation can be changed by setting the InvertIn(1-8), InvertOut, and the Exclusive properties. The properties InvertIn(1-8) and InvertOut invert the input values to the logical OR operation while the Exclusive property determines if the inputs will be evaluated with a Boolean-OR or a Boolean-XOR logic.

In normal operation, the Operate property determines if the Result property is updated with the final result of the logic operation. Each time the Result property is updated, its value is also copied to the oLogic Object pointed to by the Output property. If the InvertOut property is set to 1, then the value of the Result property is inverted before it is copied.

If the property option "C" is used, then the operation is modified so that this function only occurs once each time an oLogic Object transitions.

oGate Objects can be setup to emulate the functionality of several different integrated circuits such as 7400, 7402, 7404, 7408, 7410, 7420, 7428, 7430, 7475, etc by setting the InvertIn(1-8), InvertOut and Exclusive properties.

Property Options:

The oGate Object has 16 variants which are selected with the property options 2, 3, 4, 5, 6, 7, 8 and C.

2 specifies that there are 2 inputs.
3 specifies that there are 3 inputs.
4 specifies that there are 4 inputs.
5 specifies that there are 5 inputs.
6 specifies that there are 6 inputs.
7 specifies that there are 7 inputs.
8 specifies that there are 8 inputs.
C specifies that the Clock property is added.


Single Input	oGate	oGateC	Five Inputs	oGate5	oGate5C
Two Inputs	oGate2	oGate2C	Six Inputs	oGate6	oGate6C
Three Inputs	oGate3	oGate3C	Seven Inputs	oGate7	oGate7C
Four Inputs	oGate4	oGate4C	Eight Inputs	oGate8	oGate8C

Properties:

The following table lists the properties of the oGate Object:

Property
Description

Operate

A value that selects whether or not the Output object is updated with the result of the logic operation.

Object Class: oOperate Value Range: 0 - 1

Data Type: Numeric Default Value: 0

Operate Constant Description

0 cvOff The logic operation is not performed.

1 cvOn The logic operation is performed.

Input1
Input2
Input3
Input4
Input5
Input6
Input7
Input8

A pointer to an oLogic Object whose value is used as an input to the logic operation. A logic 0 is used if it is not set to point to an oLogic Object.

Object Class: oLogicPtrI Value Range: Any oLogic Object

Data Type: Pointer Default Value: Null

InvertIn1
InvertIn2
InvertIn3
InvertIn4
InvertIn5
InvertIn6
InvertIn7
InvertIn8

A value that selects if the Boolean value of the Inputs are inverted before the logical operation is performed.

Object Class: oSelect0to1 Value Range: 0 - 1

Data Type: Numeric Default Value: 0

InvertIn Constant Description

0 cvFalse The value of oLogic Object pointed to by the corresponding Input property is not inverted.

1 cvTrue The value of oLogic Object pointed to by the corresponding Input property is inverted.

Output

A pointer to an oLogic Object that will be updated with the result of the logic-gate operation.

Object Class: oLogicPtrO Value Range: Any oLogic Object

Data Type: Pointer Default Value: Null

InvertOut

A value that selects if the Boolean Result of the logic-gate operation is inverted before it is stored into the Output oLogic Object.

Object Class: oSelect0to1 Value Range: 0 - 1

Data Type: Numeric Default Value: 0

InvertOut Constant Description

0 cvFalse the value of the Result property is not inverted before it is copied.

1 cvTrue the value of the Result property is inverted before it is copied.

Exclusive

A value that selects if the inputs are exclusive.

Object Class: oSelect0to1 Value Range: 0 - 1

Data Type: Numeric Default Value: 0

Exclusive Constant Description

0 cvFalse Inputs are not exclusive and the gate performs a logical OR.

1 cvTrue Inputs are exclusive and the gate performs a logical XOR.

Result

A value that indicates the Boolean result of the gate evaluation. Calculated by ORing (or Exclusive-ORing if the Exclusive property is set to True) together the Boolean values of the inputs and then inverting the result if the InvertOut property was set.

Object Class: oLogic Value Range: 0 - 1

Data Type: Numeric Default Value: 0

Result Description

0 The result of the gate evaluation is Logical Low.

1 The result of the gate evaluation is Logical High.

Process
Clock

See Clocked Objects for detail

Object Class: oClockedOperate Value Range: 0 - 1

Data Type: Numeric Default Value: 0

Availability: oGateC and the other oGate object with the "C" property option.

Address

Returns a pointer to the address of the oCounter Object instance.

Object Class: oAddress Value Range: 0 - 127

Data Type: Pointer (Read Only) Default Value: Address of Object

Example:

In the following example, a Virtual Circuit is created that uses the oGate Object to monitor two push button switches on I/O line 9 and 11 and when both are pressed, turn on I/O line 10.

Visual Basic Syntax

C and Java Syntax

Dim G As New oGate2
Dim S1 As New oDIO1
Dim S2 As New oDIO1
Dim L As New oDIO1

Sub Main()
  'ooPIC.PullUp = 1
  S1.IOLine = 9
  S1.Direction = cvInput
  S2.IOLine = 11
  S2.Direction = cvInput
  L.IOLine = 10
  L.Direction = cvOutput
  L.Value = 0
  G.Input1.Link(S1)
  G.Input2.Link(S2)
  G.Output.Link(L)
  G.InvertOut = cvTrue
  G.Operate = cvTrue
End Sub

oGate2 G = New oGate2;
oDIO1 S1 = New oDIO1;
oDIO1 S2 = New oDIO1;
oDIO1 L = New oDIO1;

Void Main(Void){
  'ooPIC.PullUp = 1;
  S1.IOLine = 9;
  S1.Direction = cvInput;
  S2.IOLine = 11;
  S2.Direction = cvInput;
  L.IOLine = 10;
  L.Direction = cvOutput;
  L.Value = 1;
  G.Input1.Link(S1);
  G.Input2.Link(S2);
  G.Output.Link(L);
  G.InvertOut = cvTrue;
  G.Operate = cvTrue;
}

Basic Syntax

G Var oGate2(S1,,S2,,L,cvTrue,,cvOn)
S1 Var oDIO1(9,cvInput)
S2 Var oDIO1(11,cvInput)
L Var oDIO1(10,cvOutput)