---
name: "z8530_write_port"
section: "9"
platform: "linux"
package: "linux-manual-4.9"
version: "4.9.228-1"
release: "Debian 9 (Stretch)"
platforms: ["linux"]
url: "https://new.carta.tech/z8530_write_port"
---

# z8530\_write\_port(9)

Architecture specific interface function

## NAME

z8530\_write\_port - Architecture specific interface function

## SYNOPSIS

**void z8530\_write\_port(unsigned long** *p***, u8** *d***);**

## ARGUMENTS

*p*

port to write

*d*

value to write

## DESCRIPTION

Write a value to a port with delays if need be. Note that the caller must hold locks to avoid read/writes from other contexts violating the 5uS rule

In the longer term this should become an architecture specific section so that this can become a generic driver interface for all platforms. For now we only handle PC I/O ports with or without the dread 5uS sanity delay.

## AUTHOR

**Alan Cox** \<alan@lxorguk.ukuu.org.uk\>

Author.

## COPYRIGHT