NAME
apm – Advanced Power Management 1.2 BIOS interface

SYNOPSIS
bind –a #P /dev
/dev/apm

DESCRIPTION

This device presents a low–level interface to the APM 1.2 bios calls. It is enabled by adding the line ``apm0='' to plan9.ini. (The value after the equals sign is ignored; the presence of the line at all enables the driver.) It is only available on uniprocessor PCs. Writing a 386 Ureg structure and then reading it back executes an APM call: the written registers are passed to the call, and the read registers are those returned by the call.

This device is intended to enable more user–friendly interfaces such as apm(8).

SOURCE
/sys/src/9/pc/apm.c
/sys/src/9/pc/apmjump.s
Copyright © 2017 Alcatel-Lucent. All rights reserved.