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.TH "IDE_SYSTEM_BUS_SPEED" "9" "09 October 2005" "" ""

.SH NAME
ide_system_bus_speed \- guess bus speed
.SH SYNOPSIS
"SYNOPSIS"
.sp
\fB
.sp
int ide_system_bus_speed  ( \fIvoid\fB);
\fR
.SH "ARGUMENTS"
.TP
\fB\fIvoid\fB\fR
no arguments
.SH "DESCRIPTION"
.PP
.PP
\fBide_system_bus_speed\fR returns what we think is the system VESA/PCI
bus speed (in MHz). This is used for calculating interface PIO timings.
The default is 40 for known PCI systems, 50 otherwise.
The ``idebus=xx'' parameter can be used to override this value.
The actual value to be used is computed/displayed the first time
through. Drivers should only use this as a last resort.
.PP
Returns a guessed speed in MHz.