6502 | Highly portable MOS 6502 CPU emulator written in ANSI C | Emulator library

 by   redcode C Version: v0.1 License: GPL-3.0

kandi X-RAY | 6502 Summary

kandi X-RAY | 6502 Summary

6502 is a C library typically used in Utilities, Emulator applications. 6502 has no bugs, it has no vulnerabilities, it has a Strong Copyleft License and it has low support. You can download it from GitHub.

Copyright 1999-2018 Manuel Sainz de Baranda y Goñi. Released under the terms of the GNU General Public License v3. This is a very accurate 6502 emulator I wrote many years ago. It has been used in several machine emulators by other people and it has been extensivelly tested. It is fast, small (17 KB when compiled as a x86-64 dynamic library), easy to understand, and the code is commented. If you are looking for a MOS 6502 CPU emulator for your project maybe you have found the correct one. I use this core in the Nintendo Entertainment System emulator I started as hobby.
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            kandi-support Support

              6502 has a low active ecosystem.
              It has 96 star(s) with 14 fork(s). There are 7 watchers for this library.
              OutlinedDot
              It had no major release in the last 12 months.
              There are 3 open issues and 2 have been closed. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of 6502 is v0.1

            kandi-Quality Quality

              6502 has 0 bugs and 0 code smells.

            kandi-Security Security

              6502 has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              6502 code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              6502 is licensed under the GPL-3.0 License. This license is Strong Copyleft.
              Strong Copyleft licenses enforce sharing, and you can use them when creating open source projects.

            kandi-Reuse Reuse

              6502 releases are available to install and integrate.
              Installation instructions are not available. Examples and code snippets are available.

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            6502 Key Features

            No Key Features are available at this moment for 6502.

            6502 Examples and Code Snippets

            MOS Technology 6502 CPU Emulator,API:
            Cdot img1Lines of Code : 8dot img1License : Strong Copyleft (GPL-3.0)
            copy iconCopy
            zusize cycles;
            
            void *context;
            
            zuint8 (* read)(void *context, zuint16 address);
            
            void (* write)(void *context, zuint16 address, zuint8 value);
            
            Z6502State state;
            
            zuint8 opcode;
            
            zuint8 ea_cycles;
            
            zuint16 ea;
              
            MOS Technology 6502 CPU Emulator,API: Public Functions
            Cdot img2Lines of Code : 5dot img2License : Strong Copyleft (GPL-3.0)
            copy iconCopy
            void m6502_power(M6502 *object, zboolean state);
            
            void m6502_reset(M6502 *object);
            
            zusize m6502_run(M6502 *object, zusize cycles);
            
            void m6502_nmi(M6502 *object);
            
            void m6502_irq(M6502 *object, zboolean state);
              
            MOS Technology 6502 CPU Emulator,Building
            Cdot img3Lines of Code : 4dot img3License : Strong Copyleft (GPL-3.0)
            copy iconCopy
            $ cd building
            $ premake4 gmake                         # generate Makefile
            $ make help                              # list available targets
            $ make [config=] [target] # build the emulator
              

            Community Discussions

            QUESTION

            How to loop inside loop in list with raster?
            Asked 2022-Apr-17 at 00:41

            I have the spatial dataset below. It is composed by points in space that constitute tracks made by each ID (e.g. individual animal) and SUB-IDS (route simulations for invidual animal).

            ...

            ANSWER

            Answered 2022-Apr-16 at 22:49

            Consider generalizing your process with a user-defined function, then pass into the method subsets with a nested by, the object_oriented wrapper to tapply where you split a data frame by factor(s) then pass subsets into a function and largely synonymous to split+lapply. Use do.call to combine raster bricks.

            Source https://stackoverflow.com/questions/71888466

            QUESTION

            geom_isopycnal in ggoce returning error when used as standalone layer
            Asked 2022-Mar-20 at 21:03

            I would like to draw temperature salinity diagrams with isopycnals. I've been trying to use the ggoce::geom_isopycnal layer for ggplot2 but encounter an error when using it as a standalone layer, i.e using it with a data frame containing CTD data in the ggplot instead of using a ctd object created by the package oce. I was not able to find why the assert_has_lonlat() internal function of geom_isopycnal is returning this error when I did not specify any latitude or longitude in the call.

            ...

            ANSWER

            Answered 2022-Mar-20 at 21:03

            According to the docs you need to add a ref_longitude and ref_latitude if eos is set to "gsw", as it is by default. You could set these to 0 without affecting the plot.

            Source https://stackoverflow.com/questions/71550455

            QUESTION

            API Laravel - Call Store Procedure with IN and OUT parameter using OCI8 or PDO
            Asked 2022-Mar-04 at 08:46

            I'm new in Laravel 8.
            Connection from Laravel to Oracle SQL Developer: yajra/oci8
            I want to call my store procedure in oracle database using API Laravel.
            my store procedure have 3 IN parameters and 4 OUT parameters.

            I have few solution but it didn't work. (Tested in postman)

            Here's my code in API : (my solution 1 and 2, based on : https://yajrabox.com/docs/laravel-oci8/master/stored-procedure)

            my solution 1 :

            ...

            ANSWER

            Answered 2022-Mar-04 at 08:46

            I had ditch Eloquent and resort to vanilla PDO solution which works without errors.

            Source https://stackoverflow.com/questions/71321858

            QUESTION

            How to access assembly language symbols without a leading _ from C on 6502 (cc65)
            Asked 2022-Feb-25 at 15:31

            I'm writing some code in 6502 assembly language using cc65.

            Because I'm living in 2022 and not 1979 and have access to a development machine that is a million times more powerful than the target platform, I'm writing unit tests for the assembly language code in C.

            Obviously the calling conventions for C and assembly language are different, so I have a bunch of wrapper functions that accept C-style arguments and then call the assembly language functions.

            But after calling an assembly language function, I want to check the state of various globals that are defined in assembly language, but I can't because C expects all identifiers to start with an underscore '_' and the identifiers in my assembly language modules don't.

            I could just export every symbol twice, once with a '_' prefix and once without, but it seems so clunky and I just wonder if there's an easier way? Is there a #pragma or something that I can use to tell C to use the symbol name exactly as-is, without adding an underscore?

            I've looked in the cc65 docs and found nothing, but it seems like a pretty common need, and I'm wondering what other people do.

            ...

            ANSWER

            Answered 2022-Feb-25 at 15:31

            It is likely that the cc65 compiler only supports access to symbols with the ABI-specificed decoration, i.e. those beginning in an underscore _.

            To access other symbols, they therefore must either be renamed to follow the decoration or a decorated alias must be created.

            Source https://stackoverflow.com/questions/71208847

            QUESTION

            How to Fit a Breit Wigner/ Lorentzian on data (scipy.optimize) in Python
            Asked 2022-Feb-24 at 15:38

            Here is the data I used for the fit which does not work:

            ...

            ANSWER

            Answered 2022-Feb-24 at 15:38

            You have the arguments to np.trapz reversed. It should be

            Source https://stackoverflow.com/questions/71246936

            QUESTION

            convert range of dates into sequence of integers
            Asked 2022-Feb-15 at 21:06

            I have a dataframe of several different dates of financial information, which looks like this.

            ...

            ANSWER

            Answered 2022-Feb-15 at 18:46

            Here's one way to do it using groupby and cumsum to assign increasing numbers to each unique Date in each unique symbol. Not sure if this is exactly what you want or not, please comment if I misinterpreted

            Here is an example with a similar dataset to the one you posted

            Source https://stackoverflow.com/questions/71130933

            QUESTION

            Task in visual studio code -problem matches not work
            Asked 2021-Dec-14 at 20:47

            I created a set of tasks with which I want to compile a program written in MAD Pascal (FreePascal compiler for 6502 processor) Generally everything works, however I have a problem with the "Problem matcher" handling. I do not know why, it does not want to detect errors? I admit, that I use tasks in VSC for the first time. I have looked through many different tutorials, however everything seems to be OK. My "Problem Matcher" configuration

            ...

            ANSWER

            Answered 2021-Dec-14 at 20:47

            I have created a .bat file to mock your Mad Pascal Compiler output as follows:
            Content of "compiler_output.bat":

            Source https://stackoverflow.com/questions/70326304

            QUESTION

            Why does rolling sum with map_dbl() work in one case but not the other?
            Asked 2021-Dec-03 at 14:04

            I've been trying to understand why the map_dbl() works for one situation but doesn't for another (to my knowledge) almost identical situation. Here is where it does work:

            ...

            ANSWER

            Answered 2021-Dec-03 at 12:56

            In the first case you group by aux and get only one group with 30 observations.

            In the second case you group by facility_usd and get 28 groups since most values are unique. In particular if you look at the first row in the second case you have facility_usd = 122. There is only one observation like this: therefore you get that `cum1 = 122' because all other rows belong to a different group.

            So everything works fine.

            Source https://stackoverflow.com/questions/70213364

            QUESTION

            Oracle Apex get cookie from an ajax request
            Asked 2021-Sep-22 at 07:18

            How can I get the value of a cookie in oracle from a request that was originated with ajax from a non-apex page (inside an apex server)?

            I wanted to start by creating a function that returns the value of the login cookie and use that function to return the value to the browser to see that it can be done.

            So I created a resource template and handler with the following source: select test() from dual. The test function is declared as:

            ...

            ANSWER

            Answered 2021-Sep-17 at 21:15

            To get a cookie from an AJAX request within APEX, you can use the OWA_COOKIE package, but you do not need to define any templates or handlers. It can all be done from within the page (or calling an external procedure from within the page). Below are the steps I used to get the JSESSIONID cookie.

            I have built an example application on apex.oracle.com that you can check out.

            Page Setup

            The page is very simple with just one text box and one button. The button's action is set to Redirect to URL and this is the target:

            Source https://stackoverflow.com/questions/69192163

            QUESTION

            How to manually provide core::panicking::panic* to lld?
            Asked 2021-Sep-05 at 02:55

            I am compiling the Rust code of an rlib to LLVM IR, and then using Clang to compile & link it with a C program. This works until my code contains panics, at which point I get linker errors:

            ...

            ANSWER

            Answered 2021-Sep-05 at 02:55

            Based on this answer, I worked around this by passing -Z build-std to Cargo, thereby getting the LLVM IR from Rust's core library, and linking it in.

            But then I realized I can do one better, and avoid the long compilation time imposed by -Z std, by just taking the definitions of core::panicking::panic_bounds_check and core::panicking::panic from these IR files, simplifying their body, and adding them to a hand-written panic.ll file:

            Source https://stackoverflow.com/questions/69055494

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

            Vulnerabilities

            No vulnerabilities reported

            Install 6502

            You can download it from GitHub.

            Support

            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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            CLONE
          • HTTPS

            https://github.com/redcode/6502.git

          • CLI

            gh repo clone redcode/6502

          • sshUrl

            git@github.com:redcode/6502.git

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