Visit Our UNIX and Linux User Community

Linux and UNIX Man Pages

Test Your Knowledge in Computers #283
Difficulty: Easy
Early computers were built to perform a series of single tasks, like a calculator.
True or False?
Linux & Unix Commands - Search Man Pages

vpo(4) [centos man page]

VPO(4)							   BSD Kernel Interfaces Manual 						    VPO(4)

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: o Adaptec AIC-7110 Parallel to SCSI interface (built-in to Iomega ZIP drives) o Iomega Jaz Traveller interface o 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 formating a FreeBSD file system, 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 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. BSD
December 14, 2004 BSD

Check Out this Related Man Page

ATAPICAM(4)						   BSD Kernel Interfaces Manual 					       ATAPICAM(4)

NAME
atapicam -- CAM XPT (transport) module for ATAPI devices SYNOPSIS
To compile this driver into the kernel, place the following lines in your kernel configuration file: device scbus device ata device atapicam Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5): atapicam_load="YES" DESCRIPTION
The ATAPI/CAM module allows ATAPI devices (CD-ROM, CD-RW, DVD drives, floppy drives such as Iomega Zip, tape drives) to be accessed through the SCSI subsystem, cam(4). ata(4) and scbus(4) must be configured in the kernel as well. The SCSI target drivers (cd(4), da(4), or st(4)) can then be used to access the devices. The generic passthrough device, pass(4), can also be used to send SCSI commands directly to the devices through the CAM API. A separate CAM bus is created for each ATA bus in the system. On each of these buses, target ID 0 is assigned to the master device, and ID 1 is assigned to the slave (provided they are ATAPI devices). IMPLEMENTATION NOTES
Some SCSI commands are intercepted by the driver, and undergo special processing in order to work around limitations of ATAPI devices. Such limitations can be consequences of the ATAPI specification. For example, ATAPI devices do not implement the 6-byte versions of MODE_SELECT, MODE_SENSE, READ, or WRITE. They can also be common bugs, such as hanging when queried for extended INQUIRY information. EXAMPLES
device ata device atapicam device scbus device cd device pass Add the atapicam driver to the kernel. camcontrol devlist Print the list of all devices available through CAM. mount -t cd9660 /dev/cd0 /mnt Mount a CD-ROM from an ATAPI CD-ROM drive (the command above assumes that the ATAPI drive is the only CD-ROM unit). SEE ALSO
ata(4), cam(4), scsi(4), atacontrol(8), camcontrol(8) HISTORY
The ATAPI/CAM driver first appeared in FreeBSD 4.8 and FreeBSD 5.0. AUTHORS
The ATAPI/CAM driver was written by Thomas Quinot <thomas@FreeBSD.org>. BUGS
atapicam and ATAPI-specific target drivers (acd(4), ast(4), and afd(4)) can be configured in the same kernel. Simultaneous access to the same device through the SCSI generic drivers and the ATAPI-specific drivers may cause problems and is strongly discouraged. BSD
October 22, 2009 BSD

Featured Tech Videos