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26 PCL-740 User's Manual

PC I/O Address Usage

The following table indicates the PC I/O address usage assignment. To

prevent conflicting settings of the PCL-740 with other devices or I/O

cards, you are recommended to refer this table.

I/O Address Device

000 - 00F DMA (8237A)

020 - 021 8259A IRQ Controller

040 - 043 8253/8254 Timer/Counter

060 - 063 PPI 8255A

070 - 071 Real-Time Clock

080 - 08F DMA Page Register

0A0 - 0BF 8259A Interrupt Chip

0C0 - 0DF Second DMA Controller 8237A

0F0 - 0FF Math Coprocessor

1F0 - 1F8 AT Fixed Disk

200 - 20F Game I/O

278 - 27F Parallel Printer Adaptor #2

2F8 - 2FF Serial Adaptor ( COM 2 )

320 - 32F XT Fixed Disk

378 - 37F Parallel Printer Adaptor #1

380 - 38F SDLC Binary Communication Adaptor

3A0 - 3AF Master Binary Communication Adaptor

3B0 - 3BF Monochrome/Parallel Adaptor

3D0 - 3DF Color Graphics Adaptor

3F0 - 3F7 Diskette Controller

3F8 - 3FF Serial Adaptor ( COM 1 )

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Advantech PCL-740 Especificaciones Pagina 29