NAME

spl - set priority level

SYNOPSIS

int _spl0()

int _spl1()

int _spl4()

int _spl5()

int _spl6()

int _spl7()

int _splx()
int oldps;

DESCRIPTION

_spl0, _spl1, _spl4, _spl5, _spl6, and _spl7, set the LSI-11 bus processor priorities to 0, 1, 4, 5, 6, and 7 respectively. LSI-11 bus levels map into 68000 interrupt levels as follows: 
LSI-11		68000
======		=====
4		1
5		2
6		3
7		4
Each function returns the old processor priority level.

_splx sets the current processor priority level to oldps.