dos | Floppy Disk Operating System

 by   modscleo4 C Version: Current License: Apache-2.0

kandi X-RAY | dos Summary

kandi X-RAY | dos Summary

dos is a C library typically used in Oracle applications. dos has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

A Simple x86 Operating System written in C.
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            kandi-support Support

              dos has a low active ecosystem.
              It has 7 star(s) with 0 fork(s). There are 1 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              dos has no issues reported. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of dos is current.

            kandi-Quality Quality

              dos has no bugs reported.

            kandi-Security Security

              dos has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              dos is licensed under the Apache-2.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              dos releases are not available. You will need to build from source code and install.

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            dos Key Features

            No Key Features are available at this moment for dos.

            dos Examples and Code Snippets

            No Code Snippets are available at this moment for dos.

            Community Discussions

            QUESTION

            Swapping Characters inside an array C++
            Asked 2021-Jun-14 at 19:44

            I'm looking to make a series of flashing lights and I want them to appear on the same line.

            Something like this

            ...

            ANSWER

            Answered 2021-Jun-14 at 19:31

            I am not sure that it is possible for multiple lines, but for one, this is the way in linux:

            Source https://stackoverflow.com/questions/67976089

            QUESTION

            Use of "Or" condition in a "While" Loop for Java
            Asked 2021-Jun-13 at 21:06

            I'm studying Java programing and I found a problem which might be a sintax problem but I can't find a clear solution to it. I have the next code:

            ...

            ANSWER

            Answered 2021-Jun-13 at 21:04

            Change the condition of the loop

            Source https://stackoverflow.com/questions/67962627

            QUESTION

            differences in bitmap or rasterized font bitmaps and text display on 3.5" TFT LCD
            Asked 2021-Jun-12 at 16:19

            I am using a 3.5: TFT LCD display with an Arduino Uno and the library from the manufacturer, the KeDei TFT library. The library came with a bitmap font table that is huge for the small amount of memory of an Arduino Uno so I've been looking for alternatives.

            What I am running into is that there doesn't seem to be a standard representation and some of the bitmap font tables I've found work fine and others display as strange doodles and marks or they display upside down or they display with letters flipped. After writing a simple application to display some of the characters, I finally realized that different bitmaps use different character orientations.

            My question

            What are the rules or standards or expected representations for the bit data for bitmap fonts? Why do there seem to be several different text character orientations used with bitmap fonts?

            Thoughts about the question

            Are these due to different target devices such as a Windows display driver or a Linux display driver versus a bare metal Arduino TFT LCD display driver?

            What is the criteria used to determine a particular bitmap font representation as a series of unsigned char values? Are different types of raster devices such as a TFT LCD display and its controller have a different sequence of bits when drawing on the display surface by setting pixel colors?

            What other possible bitmap font representations requiring a transformation which my version of the library currently doesn't offer, are there?

            Is there some method other than the approach I'm using to determine what transformation is needed? I currently plug the bitmap font table into a test program and print out a set of characters to see how it looks and then fine tune the transformation by testing with the Arduino and the TFT LCD screen.

            My experience thus far

            The KeDei TFT library came with an a bitmap font table that was defined as

            ...

            ANSWER

            Answered 2021-Jun-12 at 16:19

            Raster or bitmap fonts are represented in a number of different ways and there are bitmap font file standards that have been developed for both Linux and Windows. However raw data representation of bitmap fonts in programming language source code seems to vary depending on:

            • the memory architecture of the target computer,
            • the architecture and communication pathways to the display controller,
            • character glyph height and width in pixels and
            • the amount of memory for bitmap storage and what measures are taken to make that as small as possible.

            A brief overview of bitmap fonts

            A generic bitmap is a block of data in which individual bits are used to indicate a state of either on or off. One use of a bitmap is to store image data. Character glyphs can be created and stored as a collection of images, one for each character in the character set, so using a bitmap to encode and store each character image is a natural fit.

            Bitmap fonts are bitmaps used to indicate how to display or print characters by turning on or off pixels or printing or not printing dots on a page. See Wikipedia Bitmap fonts

            A bitmap font is one that stores each glyph as an array of pixels (that is, a bitmap). It is less commonly known as a raster font or a pixel font. Bitmap fonts are simply collections of raster images of glyphs. For each variant of the font, there is a complete set of glyph images, with each set containing an image for each character. For example, if a font has three sizes, and any combination of bold and italic, then there must be 12 complete sets of images.

            A brief history of using bitmap fonts

            The earliest user interface terminals such as teletype terminals used dot matrix printer mechanisms to print on rolls of paper. With the development of Cathode Ray Tube terminals bitmap fonts were readily transferable to that technology as dots of luminescence turned on and off by a scanning electron gun.

            Earliest bitmap fonts were of a fixed height and width with the bitmap acting as a kind of stamp or pattern to print characters on the output medium, paper or display tube, with a fixed line height and a fixed line width such as the 80 columns and 24 lines of the DEC VT-100 terminal.

            With increasing processing power, a more sophisticated typographical approach became available with vector fonts used to improve displayed text quality and provide improved scaling while also reducing memory required to describe the character glyphs.

            In addition, while a matrix of dots or pixels worked fairly well for languages such as English, written languages with complex glyph forms were poorly served by bitmap fonts.

            Representation of bitmap fonts in source code

            There are a number of bitmap font file formats which provide a way to represent a bitmap font in a device independent description. For an example see Wikipedia topic - Glyph Bitmap Distribution Format

            The Glyph Bitmap Distribution Format (BDF) by Adobe is a file format for storing bitmap fonts. The content takes the form of a text file intended to be human- and computer-readable. BDF is typically used in Unix X Window environments. It has largely been replaced by the PCF font format which is somewhat more efficient, and by scalable fonts such as OpenType and TrueType fonts.

            Other bitmap standards such as XBM, Wikipedia topic - X BitMap, or XPM, Wikipedia topic - X PixMap, are source code components that describe bitmaps however many of these are not meant for bitmap fonts specifically but rather other graphical images such as icons, cursors, etc.

            As bitmap fonts are an older format many times bitmap fonts are wrapped within another font standard such as TrueType in order to be compatible with the standard font subsystems of modern operating systems such as Linux and Windows.

            However embedded systems that are running on the bare metal or using an RTOS will normally need the raw bitmap character image data in the form similar to the XBM format. See Encyclopedia of Graphics File Formats which has this example:

            Following is an example of a 16x16 bitmap stored using both its X10 and X11 variations. Note that each array contains exactly the same data, but is stored using different data word types:

            Source https://stackoverflow.com/questions/67465098

            QUESTION

            Sakai build error after following installation guide
            Asked 2021-Jun-11 at 06:25

            I have setup my environment for Sakai 19.0 from source following the guide on https://confluence.sakaiproject.org/pages/viewpage.action?pageId=109772882.

            However when I try to build the source as detailed in 4.0 of the guide I am getting an error. Below are the logs with debug switched on:

            ...

            ANSWER

            Answered 2021-Jun-11 at 06:25

            On January 15, 2020 the Maven Central repository disabled access through HTTP (cf. Sonatype blog).

            While recent version of Maven have the correct URL for Maven Central in their Super POM older ones might still use the HTTP URL. Upgrade your Maven installation or check whether your didn't override the Maven Central repository in your settings.xml file.

            The repository configuration should look like this:

            Source https://stackoverflow.com/questions/67928168

            QUESTION

            Influx - just starting to get "authorization not found" error after having connected before
            Asked 2021-Jun-10 at 13:18

            Using Windows downloadable EXEs for Influx. Was connecting and working great until this morning.

            I started influxd today, and I see in the console:

            ...

            ANSWER

            Answered 2021-Jun-10 at 08:34

            You can follow below steps:

            1. Execute below command to check if you can access the auth list and see all tokens list and if you have read-write permissions :
              influx.exe auth list
              You can also view in dasboard:
            2. If you are not able to see token, then you can generate a token with read/write or all access.

            3. It might have also happened that the retention period that you choose must have been over due to which no measurement data is available. 4. You can create a new bucket and add token that you created in above step:

            Source https://stackoverflow.com/questions/67917118

            QUESTION

            Owasp Zap and Amazon
            Asked 2021-Jun-10 at 07:55

            I don't have much experience of penetration testing, but I am currently looking at OWASP Zap.

            The website I am going to pentest runs on an Amazon EC2 instance. Amazon seems to have certain requirements when it comes to security testing: https://aws.amazon.com/security/penetration-testing/

            The above website says that you can run security tests on a Amazon EC2 instance but not certain ones such as DNS zone walking, DoS, etc. which is fair enough.

            The problem is that I can't see exactly what OWASP Zap will do when I click the "Attack" button and I obviously don't want to upset AWS!

            Has anyone else used OWASP Zap on an EC2 instance? Did it you have to configure it to not do DoS attacks, etc? Is there any way I can find out what Zap is doing (I couldn't see anything in the documentation but may have missed something)?

            ...

            ANSWER

            Answered 2021-Jun-10 at 07:50

            Yes, I've done that. ZAP does not deliberately attempt DoS attacks (or any other attacks intended to cause damage) but it can still 'take out' insecure or badly configured applications. If you have permission from the website owner then they hopefully wont complain to Amazon and then you'll be ok.

            For details of the scan rules ZAP uses see https://www.zaproxy.org/docs/alerts/ - those pages link to the relevant source code so that shpould provide you with more than enough detail ;)

            Source https://stackoverflow.com/questions/67911787

            QUESTION

            Error: Objects are not valid as a React child (found: object with keys {})
            Asked 2021-Jun-08 at 08:03

            I'm a beginner learning ts for the first time. Thank you in advance for sharing your knowledge. I am making a to-do list. I used to react to complete it. But now I am using react and typescript together to complete the code. I got an error. I don't know what the problem is. Help me, please.

            Error: Objects are not valid as a React child (found: object with keys {}). If you meant to render a collection of children, use an array instead.

            Click here to view the full code

            What I think that the problem is this file.

            // contet.tsx

            ...

            ANSWER

            Answered 2021-Feb-16 at 08:45

            I had a look at the repo you shared the problem is at List.tsx component and the way you are trying to access your props from your components. It should be

            Source https://stackoverflow.com/questions/66220168

            QUESTION

            creating a python 2 player game with functions & classes
            Asked 2021-Jun-04 at 18:00

            This is a game where player 1 gets asked questions and store all player 1 answers in a list. After player 1 finishes his/her turn, then player 2 gets to play and ask the same exact questions as player 1 and store player 2 answers in a different list.

            I have player 1 in a function, problem is once player1 function is done running the program exits.

            1- how do I make it so player2 gets asked the same questions as player1. Also, that once player1 function is done running that the program goes to player2 function.

            2- would it be better to store my list of dict questions in a class, because I intend to increase the number of questions in the qa list, and how do I do so? Please see code below.

            ...

            ANSWER

            Answered 2021-Jun-04 at 18:00

            Here's a very quick refactor to make it so you don't have to copy and paste the quiz logic for each player. Note that we don't pop the questions out of qa (instead we just shuffle the list), which makes it easier to reuse the same questions -- currently your program exits after player1() because that function empties the question list and leaves nothing for player2 to do, but the below code should fix that.

            (edit to reflect comments -- just shuffle once, and declare everything in play())

            Source https://stackoverflow.com/questions/67839406

            QUESTION

            strange behavior with sed or xargs
            Asked 2021-Jun-04 at 06:17

            EDIT:

            This problem was caused by DOS style line ending, and has nothing to do with how large the file is, as I stated in the question, because when try to research the problem I used small samples edited on my linux desktop, which does not have the problem at all.

            I kept this question just for reference because for anyone not familiar with this problem, it is very hard to describe to potential helpers!

            Thanks to @Sundeep and @jared_mamrot

            I have a file test.txt which lists a bunch of filenames, looks like this:

            ...

            ANSWER

            Answered 2021-Jun-04 at 02:56

            I don't understand the rationale behind your question, but but perhaps this will help:

            Source https://stackoverflow.com/questions/67830814

            QUESTION

            How to display a 32-bit DIV result stored in DX:AX
            Asked 2021-Jun-02 at 02:58

            I wrote this code to display a current value after some calculations. But the program gives wrong output when it should gave decimal 10 result it gives 13107 result and i cant find the reason why. Before this label what I did was basically getting inputs from the user and storing those values at si register.

            ...

            ANSWER

            Answered 2021-Jun-01 at 21:39

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install dos

            You can download it from GitHub.

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            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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          • CLI

            gh repo clone modscleo4/dos

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            git@github.com:modscleo4/dos.git

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