Table 4 - Hardware I/O Map of AT Class Machines

Hex Address

Address Function in AT Class Machines

000-01F

DMA controller #1 (8237A-5)

020-03F

interrupt controller #1 (8259A)

040-05F

timer (8254)

060-06F

keyboard (8042)

070-07F

NMI - non maskable interrupt & CMOS RAM

080-09F

DMA page register (74LS612)

0A0-0BF

interrupt controller #2 (8259A)

0C0-0DF

DMA controller #2 (8237A)

0F0-0FF

80287 math coprocessor

1F0-1F8

hard disk

200-20F

game port joystick controller

258-25F

Intel Above Board

278-27F

parallel printer port 2

2E8-2EF

COM4 serial port

2F8-2FF

COM2 serial port

300-31F

prototype card

378-37F

parallel printer 1

380-38F

SDLC or bisynch com 2

3A0-3AF

bisynch com 1

3B0-3BF

MDA - monochrome adapter

3BC-3BE

parallel printer on monochrome adapter

3C0-3CF

EGA - reserved

3D0-3D7

CGA - color graphics adapter

3E8-3EF

COM 3 serial port

3F0-3F7

floppy diskette controller

3F8-3FF

COM1 serial port

Any four byte space not listed in Table 4 and not used by any other equipment in your system may be used for the parallel port. Appendix A shows all the possible addresses and their settings.

4Documentation Number PIOC2595 Manual

B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350

PH (815) 433-5100 -- FAX (815) 433-5105

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B&B Electronics manual 4Documentation Number PIOC2595 Manual

PIOC specifications

B&B Electronics PIOC, or Programmable Input Output Controller, stands out as a versatile and robust solution for managing a wide array of industrial automation tasks. Designed specifically for demanding environments, the PIOC offers seamless integration and enhanced capabilities for controlling and monitoring processes.

One of the key features of the PIOC is its ability to support various communication protocols. This flexibility ensures compatibility with different industrial equipment and systems, making it a critical component in diverse applications, from manufacturing to transportation. The device supports Modbus, Ethernet/IP, and other industry-standard protocols, allowing for easy integration into existing networks.

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The PIOC also boasts a variety of I/O options, including digital and analog inputs and outputs. This versatility enables it to monitor sensors, control motors, and manage other devices seamlessly. With support for various expansion modules, users can easily scale their systems as their needs change, allowing for future growth without requiring a complete overhaul of existing infrastructure.

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