... It is not always necessary to write a device driver for a device, especially in applications where no two applications will compete for the device. ... If your process is running as superuser (root), you can use the mmap() call to map some of your process memory to actual memory locations, by mmap() 'ing a section of /dev/mem. ... If you need to use cli() , you need a kernel-space driver, and a user-space driver will only cause grief as more and more Linux users use SMP machines. ...

... The timecode of these receivers is sampled via a STREAMS module in the kernel (The STREAMS module has been designed for use with SUN Systems under SunOS 4.1.x. It can be linked directly into the kernel or loaded via the loadable driver mechanism). ... The reference clock support in xntp contains the necessary configuration tables for those receivers. In addition to supporting up to 32 different clock types and 4 devices, the generation a a PPS signal is also provided as an configuration option. ...

Next: Allocating disk space Up: Using Disks and Other Previous: Other tools for the . Not all disks or partitions are used as filesystems. ... Many floppies are used in a tape-drive emulating fashion, so that a tar љ or other file is written directly on the raw disk, without a filesystem. ... It also makes the disks more easily compatible with other systems: for example, the tar љ file format is the same on all systems, while filesystems are different on most systems. ... 2880+0 records in . ...

... Mass . 17a. Measuring Mass . ... A medium-size (1.25 inch wide) binder clip, as is used in offices to hold papers together--the type made of flat blue steel, with two wire handles. ... The theory predicts that the oscillation period should be proportional to the square root of the oscillating mass, including the mass of the clip. Note that gravity plays no part here: the oscillation period would be the same on the Moon or in zero-g. Denoting square root by SQRT, we have . ...

... Summary page . ... Printable page . ... This article is part of the LWN Porting Drivers to 2.6 series . ... If you have a char driver which needs direct user-space access (a high-performance streaming tape driver, say), then you'll want to map user-space pages yourself. ... int get_user_pages(struct task_struct *task, struct mm_struct *mm, unsigned long start, int len, int write, int force, struct page **pages, struct vm_area_struct **vmas); . ... Driver porting: Zero-copy user-space access . ...

... The following is a description of how to adjust the declination drive motor and worm mechanism.  ... In an earlier MAPUG post, I described adjusting the worm carriage spring tension to minimize retrograde motion by REDUCING carriage spring tension just enough to lift the worm into contact with the worm wheel and NO MORE.  The purpose of the carriage spring is to variably remove backlash in the Dec (and RA) drive.  ... The amount of carriage float is adjusted by the carriage set screw stop.  ...

... GET RID OF THE SHIT EATERS (get rid of the shit eaters) GET RID OF THE SHIT EATERS (get rid of the shit eaters) GET RID OF THE SHIT EATERS (get rid of the shit eaters) GET RID OF THE SHIT EATERS (get rid of the shit eaters) Someone has got to put a stop to this shit eating. The shit eaters sleep in the kitchen with their feets in the hall. Woo woo Please get out of here @SONG: Throw that dog a bone Enough is enough already and I think that 2 years is too long to go without a girlfriend. ...

... Execute) Back Status Jacks Limits # ListCtrl $ Caption =Jack Limits: $ ColumnName0 = Name $ ColumnName1 =Status $ StructName1 =Limits.Actual Back Drive Status # ListCtrl $ Caption =Drive Status: $ ColumnName0 = Name $ ColumnName1 =Status $ StructName1 =Jacks Alarms.Actual Back Positions # ListCtrl $ Caption =Jack Positions: $ ColumnName0 = Name $ ColumnName1 =Position $ ...

... IMPORTANT************************** You should have only one copy of HyperCardЁ 2.1 or HyperCard Player 2.1 on your hard disk. You must allocate at least 2500K of memory to HyperCard or HyperCard Player. ... This will free up additional memory. ... AURA AND AURA'S LICENSOR MAKE NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, REGARDING ITS ELECTRONIC PICTUREBOOKS OR THE SOFTWARE INCORPORATED THEREIN. ...

Blackholes2 Forum Message . ... Holostars: Black Holes Without Event Horizons . ... Its name derives from the fact tht information is preserved in such a black hole, and must be a contraction of hologram and star. ... The exterior metrics and fields of the charged holostar are equal to the Reissner-Nordstroem black hole solution. ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... Apache HTTP Server Version 2.2 . ... Provides for "trailing slash" redirects and serving directory index files . ... This is controlled by mod_dir . ... A "trailing slash" redirect is issued when the server receives a request for a URL http://servername/foo/dirname where dirname is a directory. Directories require a trailing slash, so mod_dir issues a redirect to http://servername/foo/dirname/ . ... mod_dir . ... DirectoryIndex will be evaluated only for directories requested with trailing slash. ...

... Modify it by using the info in the file. ... Boot -------------------------------------------------------------------------- If you are new to DOSEMU: - Make _CERTAIN_ that your first disk statement in /etc/dosemu.conf IS pointing to your hdimage! Reboot DOS (the real version, not DOSEMU.) ... If you already have a HDIMAGE file: - If you have a previous version of DOSEMU running, you should copy the .SYS, .COM, & .EXE files in the ./commands directory over to the hdimage drive that you boot from. ...

... Meta Index / Home Page / Errors . ... warning . ... For instance, if the PROPOSAL information record is missing the user can add a fake one to the SOSF without this having any effect on the data reduction. corrective action: Continue. ... For a certain exposure in the ODF one of the parameters was not found in the housekeeping data. ... RGS, EPN, OM : the current exposure is found to contain more than one distinct calibration mode. corrective action: In the summary file: MODE = UNDEFINED . ... error...

Astronomy Picture of the Day . Walking in Space . ... 1.08.1999 . ... Credit Copyright: James McDivitt, Gemini 4 , NASA Explanation: Pictured above is the first american astronaut to walk in space: Edward White . ... The term spacewalk is deceiving since astronauts do not actually walk - they float - usually without their feet touching anything solid. ... August . ... August 1999 . ... 1999 2000 . ... Publications with keywords: astronaut - space . Publications with words: astronaut - space . ...

... This is a personal project collecting and documenting early images of Harvard College Observatory, focusing on the site at Observatory Hill (previously Summer House Hill). ... This page shows a list of all images related pictures in the same group. [link] 1636 Portrait of Galileo Galilei . ... The image is a copy of a famous portrait by Justus Sustermans, which is on display at the Uffizi Gallery in Florence Italy (where Galileo was under house arrest while sitting for the portrait in 1636). ...

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... Bad Astronomy . ... On Thursday, February 15th 2001 (and replayed on March 19), the Fox TV network aired a program called ``Conspiracy Theory: Did We Land on the Moon?'', hosted by X-Files actor Mitch Pileggi. ... Dust around the lander . ... However, it appeals to our common sense: when the sky is black here on Earth, we see stars. ... Bad: The program claims that when the top half of the lander took off from the Moon to bring the astronauts back into orbit, there was no flame from the rocket. ...

... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... Mars . ... Previously understood that magnetic fields were directly related to rotation, so when I read that Mars, like Venus, didn't have one, my understanding crumbled. What exactly causes magnetic fields in planets? ... RELATED TOPICS: MAGNETIC FIELD . Planetary magnetic fields are definitely related to rotation, but directly not so much. ... Get instant access to subscriber content on Astronomy.com! ...

... One of these works directly on an event list, avoiding the losses which occur when events are binned into images. ... A much better solution would be to avoid forming images at all and apply maximum likelihood to the raw event list. ... Rapid access to the event data was also essential. ... Simulating a suitably realistic sky with added sources takes long enough in the image domain, the generation of a sufficiently large set of photon-event lists with similar properties would have taken even longer....

... Compatibility: Available in Apache 1.3 and later. Available as an External module in Apache 1.1 and later. ... It does its work by comparing each document name in the requested directory against the requested document name without regard to case , and allowing up to one misspelling (character insertion / omission / transposition or wrong character). ... Compatibility: CheckSpelling was available as a separately available module for Apache 1.1, but was limited to miscapitalizations. ...