B&B Electronics 2IQEC2 Manual de usuario descargar pdf (Pagina 16)

A-2 Appendix A: Hardware I/O Maps 2IQEC2/43798 Manual

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

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

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 sixteen byte space not listed above and not used

by any other equipment in your system may be used for the

serial port.

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B&B Electronics 2IQEC2 Manual de usuario Pagina 16