Omega Engineering IOP-241 Port C Interrupt Enable Register Base +, Bit Name Description

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5.4Port C Interrupt Enable Register (Base + 5)

INT7 - INT0 may be enabled by writing the appropriate bits in the Port C Interrupt Enable Register. The corresponding I/O channel must be configured as an input channel via the Data Port C Control Register if an interrupt is to be generated. If an I/O channel is configured as an interrupt source (INT7 - INT0), the I/O channel continues to be a standard data input channel (DATA23 - DATA16) and may be read just as any other input signal is read.

 

Bit

Name

Description

 

 

 

 

 

 

 

 

 

7

INT7EN

1 = Enables INT7; 0 = Disables INT7

 

 

 

 

 

 

 

6

INT6EN

1 = Enables INT6; 0 = Disables INT6

 

 

 

 

 

 

 

5

INT5EN

1 = Enables INT5; 0 = Disables INT5

 

 

 

 

 

 

 

4

INT4EN

1 = Enables INT4; 0 = Disables INT4

 

 

 

 

 

 

 

3

INT3EN

1 = Enables INT3; 0 = Disables INT3

 

 

 

 

 

 

 

2

INT2EN

1 = Enables INT2; 0 = Disables INT2

 

 

 

 

 

 

 

1

INT2EN

1 = Enables INT1; 0 = Disables INT1

 

 

 

 

 

 

 

0

INT1EN

1 = Enables INT0; 0 = Disables INT0

 

 

 

 

 

 

 

 

 

 

 

Table 5-5. Port C Interrupt Control Register

IOP-241 Users Manual

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Contents 15,1*,1 WARRANTY/DISCLAIMER Standards to which Conformity is Declared Manufacturers NameManufacturer’s Address Application of Council DirectiveServicing North America For immediate technical or application assistanceServicing Europe Page Table of Contents Page List of Figures and Tables System Configuration IOP-241 FeaturesIOP-241 Client Driver for DOS Client Driver recommended EnablerClient Driver Installation Device = C\IOP241CL.SYS Command Line OptionsPage Common Problems IOP-241 Enabler for DOS Enabler Installation DEVICE=C\IOP241EN.EXE Common Problems After Completing Configuration Resource Settings in Windows 95/98 Installing the IOP-241 Under Windows 95/98Changing Resource Settings with Device Manager After Completing Configuration I/O Port Description External Interrupt Description Port C Interrupt DescriptionOffset Read/Write Register Data Port a Control Register Base +Data Port C Control Register Base + Data Port B Control Register Base +Bit Name Description Port C Interrupt Enable Register Base +Interrupt Status Register Read Only Base + Interrupt Mode Control Register Base +Interrupt Acknowledge Register Write Only Base + Summary of Interrupt Source OptionsPort C Interrupt Sources External Interrupt Source Summary of Input/Output OptionsProgramming Example External Connections CP-1037 Cable Assembly Optional AccessoriesUIO-37 Screw Terminal Block Bus Interface Physical DimensionsPower Requirements ConnectorVersion January 25