Direct Folders 3.5 Serial: A Must-Have for Windows Users Who Work with Many Files and Folders

The emulated USB controllers do not communicate directly with devices on the host. Instead they communicate with a virtual USB layer which abstracts the USB protocol and enables the use of remote USB devices.

Shared Clipboard: You can select here whether the clipboard of the guest OS should be shared with that of your host. If you select Bidirectional, then Oracle VM VirtualBox will always make sure that both clipboards contain the same data. If you select Host to Guest or Guest to Host, then Oracle VM VirtualBox will only ever copy clipboard data in one direction.

Direct Folders 3.5 Serial

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Drag and Drop: This setting enables support for drag and drop. Select an object, such as a file, from the host or guest and directly copy or open it on the guest or host. Multiple drag and drop modes for a VM enable restricting of access in either direction.

Ever since the original IBM PC, personal computers have been equipped with one or two serial ports, also called COM ports by DOS and Windows. Serial ports were commonly used with modems, and some computer mice used to be connected to serial ports before USB became commonplace.

While serial ports are no longer as common as they used to be, there are still some important uses left for them. For example, serial ports can be used to set up a primitive network over a null-modem cable, in case Ethernet is not available. Also, serial ports are indispensable for system programmers needing to do kernel debugging, since kernel debugging software usually interacts with developers over a serial port. With virtual serial ports, system programmers can do kernel debugging on a virtual machine instead of needing a real computer to connect to.

If a virtual serial port is enabled, the guest OS sees a standard 16550A compatible UART device. Other UART types can be configured using the VBoxManage modifyvm command. Both receiving and transmitting data is supported. How this virtual serial port is then connected to the host is configurable, and the details depend on your host OS.

Host Device: Connects the virtual serial port to a physical serial port on your host. On a Windows host, this will be a name like COM1. On Linux or Oracle Solaris hosts, it will be a device node like /dev/ttyS0. Oracle VM VirtualBox will then simply redirect all data received from and sent to the virtual serial port to the physical device.

On a Mac OS, Linux, or Oracle Solaris host, a local domain socket is used instead. The socket filename must be chosen such that the user running Oracle VM VirtualBox has sufficient privileges to create and write to it. The /tmp directory is often a good candidate.

Raw File: Send the virtual serial port output to a file. This option is very useful for capturing diagnostic output from a guest. Any file may be used for this purpose, as long as the user running Oracle VM VirtualBox has sufficient privileges to create and write to the file.

TCP: Useful for forwarding serial traffic over TCP/IP, acting as a server, or it can act as a TCP client connecting to other servers. This option enables a remote machine to directly connect to the guest's serial port using TCP.

Up to four serial ports can be configured per virtual machine, but you can pick any port numbers out of the above. However, serial ports cannot reliably share interrupts. If both ports are to be used at the same time, they must use different interrupt levels, for example COM1 and COM2, but not COM1 and COM3.

Oracle VM VirtualBox can enable virtual machines to access the USB devices on your host directly. To achieve this, Oracle VM VirtualBox presents the guest OS with a virtual USB controller. As soon as the guest system starts using a USB device, it will appear as unavailable on the host.

Clicking on the + button to the right of the USB Device Filters window creates a new filter. You can give the filter a name, for later reference, and specify the filter criteria. The more criteria you specify, the more precisely devices will be selected. For instance, if you specify only a vendor ID of 046d, all devices produced by Logitech will be available to the guest. If you fill in all fields, on the other hand, the filter will only apply to a particular device model from a particular vendor, and not even to other devices of the same type with a different revision and serial number.

Serial Number. While vendor ID and product ID are quite specific to identify USB devices, if you have two identical devices of the same brand and product line, you will also need their serial numbers to filter them out correctly.

This document applies to RDA cataloging of direct access electronic resources. Direct access electronic resources have a physical carrier (a disc, a cassette, or a cartridge) that is inserted into a computer device (e.g. a workstation CD-ROM drive) or a peripheral attached to the computer device. Some examples of direct access electronic resources include: CD-ROMs, photo CDs, DVD-ROMs, floppy discs, memory sticks, & computer tape cassettes, reels, etc. The primary focus of this document will be on CD-ROMs. Do not use this document for CD-audio recordings or video DVDs.

Although occasional reference is made to direct access electronic serials in this document, the primary reference source for this category should be Module 30 of the CONSER Cataloging Manual [CCM]; see also: CONSER Editing Guide [CEG], Section F. Appendix N. Special physical formats. [Subsection] Electronic Resources. While it may be the case that most current & future serial electronic resources will be remote rather than direct resources, serial backfiles on CD-ROM may continue to be the preferred format for some publishers.

*LC PCC PS 0.0 Situations Requiring Further Consideration, E. Republications states: "Generally, catalog a republication of a serial as a serial." Presumably this will apply to republication as a CD-ROM, whether the serial is ceased or ongoing. Exceptions: republication of a single issue or a limited number of issues (unlikely for electronic resources given their storage capacity), a collection of bibliographically unrelated serials or articles. Note that per the CONSER Manual 17.7, if the CD-ROM stores a run with title changes, each title will require a separate bibliographic record.

Reproductions. The PCC Provider-Neutral e-Resource guidelines are intended to apply to online resources to accommodate different aggregator packages. The guidelines do not apply to direct access electronic resources since CD-ROMS, etc. are not issued following the aggregator model. Recent PCC decisions regarding microform reproductions, which may be similar to the P-N guidelines, do not cover reproductions issued as direct access electronic resources. RDA 3.1.3 applies to reproductions issued as direct access electronic resources: "When describing a facsimile or reproduction, record the elements describing the carrier of the facsimile or reproduction."

Note that P-N [Provider-Neutral] exceptions and the proposed exceptions for microform reproductions do not apply to direct access resources that contain reproductions of printed materials. The disc itself is still the first place to get the title, not an image of the original title page. See LC-PCC PS 2.2.2.2 Alternative.

Electronic resources commonly use terms other than "edition" to denote a new manifestation. Examples: issue, version, release, level, update (and their equivalents in other languages). Note that in serials cataloging, version numbers are relegated to 538, since these change as later issues are published; statements of the type "Macintosh version," on the other hand, would be considered edition statements even in serials cataloging (CCM 30.10), and in some cases "version" can function as enumerative designation.

RDA 3.19.1.3. Record file characteristics if considered to be important. Per the PS, it is mandatory for cartographic resources. If it is considered necessary to include information about additional physical characteristics, a 516 note can also be used. Not relevant for direct access electronic resources: encoding format (3.19.3), image resolution (3.19.5), regional encoding (3.19.6) and encoded bitrate (3.19.7).

Although the LC-PCC PS 2.17.2.4 probably applies chiefly to online resources, it could conceivably apply to CD-ROMs issued as serials: "If an electronic serial is reformatted so that all evidence of the earlier title is removed, give the earlier title in a 247 field. Give a 547 field explaining that the earlier title no longer appears on the serial."

There is no RDA equivalent to AACR2 9.2B4, where the cataloger is instructed to ignore minor changes in determining whether a new record is to be created and to record the differences in a note (9.7B7). The LC-PCC PS 0.0 Determining Number of Records. Edition or Copy of a Book states "Consider that a new edition is involved whenever there is an explicit indication of changes in content" or if there already exists a bibliographic record with differences in 245, 250, 300, or 4xx. But note that the PS is in reference to books; the instructions in the PS for handling differences in 264 are clearly book-oriented. However, in the absence of a PS applying to direct access electronic resources, at this time, do not ignore minor changes in determining whether to create a new record. In such cases, the cataloger may need to supply bracketed information in 250. While AACR2 9.7B7 is no longer applicable, a note could still be made if the supplied edition statement needs supplementation.

For serials, direct access electronic resources may need a numbering peculiarities note because of the organization of the information on the carriers. [Formerly under AACR2 12.7B10; numbering peculiarities] Use MARC 516 (both indicators blank) 2ff7e9595c