VPO(4)

NAME
vpo - parallel to SCSI interface driver

SYNOPSIS
device vpo

For one or more SCSI busses:
device scbus0 at vpo0

DESCRIPTION
The primary purpose of the vpo driver is to provide access to the Adaptec AIC-7110 SCSI controller built in the Iomega ZIP drive. But it should also work with the Iomega Jaz Traveller parallel to SCSI interface.

The driver has been extended to the ZIP+ drive which is based on the Iomega Matchmaker Parallel to SCSI interface.

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

DOS, DragonFly or FreeBSD filesystems are supported. When mounting a DOS filesystem or formatting a DragonFly or FreeBSD filesystem, check the slice of the disk with the fdisk(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 disklabel(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.