Quatech MPA-200/300, RS-422/485 user manual Hardware Installation, Irq Dma/Drq

2 HARDWARE INSTALLATION

If the default address and interrupt settings are sufficient, the MPA-200 can be quickly installed and put to use. The factory default settings are listed below in Table 1.

Table 1 Default Board Configuration

Address	Interrupt	TxDMA	RxDMA
300 hex	IRQ 5	DMA/DRQ 3	DMA/DRQ 1

1.If the default settings are correct, skip to step 2, otherwise refer to the chapters ADDRESSING on page 15, INTERRUPTS on page 17, and DIRECT MEMORY ACCESS on page 18 for detailed information on how to set the address, IRQ, and DMA levels.

2.Turn off the power of the computer system in which the MPA-200 is to be installed.

3.Remove the system cover according to the instructions provided by the computer manufacturer.

4.Install the MPA-200 in any vacant expansion slot. The board should be secured by installing the Option Retaining Bracket (ORB) screw.

5.Replace the system cover according to the instructions provided by the computer manufacturer.

6.Attach and secure the cable connectors to the desired equipment.

Quatech Inc., MPA-200/300 Manual 4