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1.1       root        1: .TH AUTOCONF 4 5/10/81
                      2: .UC 4
                      3: .SH NAME
                      4: autoconf \- diagnostics from autoconfiguartion code
                      5: .SH DESCRIPTION
                      6: When UNIX bootstraps it probes the innards of the machine it is running
                      7: on and locates controllers, drives, and other devices, printing out
                      8: what it finds on the console.  This procedure is driven by a system
                      9: configuration table which is processed by
                     10: .IR config (8)
                     11: and compiled into each kernel.
                     12: .PP
                     13: VERSABUS devices are located by probing to see if their control-status
                     14: registers respond.  If not, they are silently ignored.  If the control
                     15: status register responds but the device cannot be made to interrupt,
                     16: a diagnostic warning will be printed on the console and the device
                     17: will not be available to the system.
                     18: .PP
                     19: A generic system may be built which picks its root device at boot time
                     20: as the ``best'' available device.
                     21: If such a system is booted with the RB_ASKNAME option of (see
                     22: .IR reboot (2v)),
                     23: then the name of the root device is read from the console terminal at boot
                     24: time, and any available device may be used.
                     25: .SH SEE ALSO
                     26: config(8)
                     27: .SH DIAGNOSTICS
                     28: .PP
                     29: \fB%s%d at vba address %o vec %o\fR.  The device %s%d, e.g. fsd0
                     30: was found on the bus at control-status register address %o and with
                     31: device vector %o.
                     32: .PP
                     33: \fB%s%d at vba address %o didn't interrupt\fR.  The device did not interrupt,
                     34: likely because it is broken, hung, or not the kind of device it is advertised
                     35: to be.
                     36: .PP
                     37: \fB%s%d at %s%d slave %d\fR.
                     38: Which would look like ``smd0 at vd0 slave 0'',
                     39: where \fBsmd0\fR is the name of a disk drive and \fBvd0\fR is the name
                     40: of the controller.
                     41: .SH BUGS

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