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RapidDriver Explorer
Introduction
The User Interface (Overview)
Device Description
Test Devices
Driver Description
New RapidDriver Project
Step 1: Select Device
Step 2: Project Description
Step 3: ISA Resources
Step 4: Driver Installation
Generic RapidDriver Project
Port I/O
Memory-mapped I/O
PCI Devices
Working With ISA/PC-104 Devices
New ISA/PC-104 Project
Hardware Resources for ISA/PC-104
Input/Output (I/O) Port Ranges
Memory Address Ranges
Interrupt Request (IRQ) Line
Direct Memory Access (DMA) Channel
Test ISA/PC-104 Device
Working With PCI Devices
New PCI Driver Project
Test PCI Device
PCI Header
Configuration Space
Base Address Registers (BARs)
Interruptions
Settings for bus-master DMA
Working with Parallel Port Devices
New Parallel Port Project
Test Parallel Port Device
Parallel Port Settings
LPT Pins
Ports And Bits
Interrupts
Working With USB Devices
New USB Project
Test USB Device
Descriptors and Configuration
Vendor/Class Requests
Pipe Operations
Feature Requests
LPT Pins
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lptpins  
 
This is the pins state monitor, which also allows write an electrical level to the selected pin of selected parallel port.
Not all pins are accessible for read/write operations, that is why some pins are "disabled".