---
name: "mca_set_dma_io"
section: "9"
platform: "linux"
package: "linux-manual-3.2"
version: "3.2.78-1"
release: "Debian 7 (Wheezy)"
platforms: ["linux"]
url: "https://new.carta.tech/mca_set_dma_io"
---

# mca\_set\_dma\_io(9)

set the port for an I/O transfer

## NAME

mca\_set\_dma\_io - set the port for an I/O transfer

## SYNOPSIS

**void mca\_set\_dma\_io(unsigned int** *dmanr***, unsigned int** *io\_addr***);**

## ARGUMENTS

*dmanr*

DMA channel

*io\_addr*

an I/O port number

## DESCRIPTION

Unlike the ISA bus DMA controllers the DMA on MCA bus can transfer with an I/O port target.

## COPYRIGHT