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VPO(4)                DragonFly Kernel Interfaces Manual                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) boot-
     flags 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.

DragonFly 3.5                    March 5, 1998                   DragonFly 3.5

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