NAME

     vpo — parallel to SCSI interface driver

SYNOPSIS

     device vpo

     For one or more SCSI busses:
     device scbus

DESCRIPTION

     The vpo driver provide access to parallel port Iomega Zip and Jaz drives.

HARDWARE

     The vpo driver supports the following parallel to SCSI interfaces:

     •   Adaptec AIC-7110 Parallel to SCSI interface (built-in to Iomega ZIP drives)
     •   Iomega Jaz Traveller interface
     •   Iomega MatchMaker SCSI interface (built-in to Iomega ZIP+ drives)

USAGE

     The driver should let you use a printer connected to the drive while transferring data.

     DOS and FreeBSD file systems are supported.  When mounting a DOS file system or formatting a
     FreeBSD file system, check the slice of the disk with the gpart(8) utility.

     In order to unixify a ZIP disk, put the following in /etc/disktab:

     zip|zip 100:\
             :ty=removable:se#512:nc#96:nt#64:ns#32:\
             :pa#196608:oa#0:ba#4096:fa#512:\
             :pb#196608:ob#0:bb#4096:fb#512:\
             :pc#196608:oc#0:bc#4096:fc#512:

     and use bsdlabel(8).

     If you have trouble with your driver, your parallel chipset may not run properly at the
     detected mode (NIBBLE, PS2 or EPP).  Tune the ppc(4) bootflags to force other modes.

SEE ALSO

     da(4), lpt(4), ppbus(4), ppc(4), scsi(4)

HISTORY

     The vpo manual page first appeared in FreeBSD 3.0.

AUTHORS

     This manual page was written by Nicolas Souchu.

BUGS

     During boot, the driver first tries to detect a classic ZIP, then a ZIP+.  The ZIP+
     detection is intrusive and may send erroneous characters to your printer if the drive is not
     connected to your parallel port.