vm86old, vm86 \- enter virtual 8086 mode
.SH SYNOPSIS
.B #include <sys/vm86.h>
-.sp
+.PP
.BI "int vm86old(struct vm86_struct *" info );
-.sp
+.PP
.BI "int vm86(unsigned long " fn ", struct vm86plus_struct *" v86 );
.SH DESCRIPTION
The system call
.BR vm86 ()
was introduced in Linux 0.97p2.
-In Linux 2.1.15 and 2.0.28 it was renamed to
+In Linux 2.1.15 and 2.0.28, it was renamed to
.BR vm86old (),
and a new
.BR vm86 ()
was introduced.
-The definition of \fIstruct vm86_struct\fP was changed
+The definition of
+.IR "struct vm86_struct"
+was changed
in 1.1.8 and 1.1.9.
-.LP
+.PP
These calls cause the process to enter VM86 mode (virtual-8086 in Intel
literature), and are used by
.BR dosemu .
.B EPERM
Saved kernel stack exists.
(This is a kernel sanity check; the saved
-stack should only exist within vm86 mode itself.)
+stack should exist only within vm86 mode itself.)
.SH CONFORMING TO
This call is specific to Linux on 32-bit Intel processors,
and should not be used in programs intended to be portable.