Free emulators for dreamcast software for linux

cereal is an emulation framework designed to allow easy emulation of interconnected modules. Its main component is an 8051 emulator module, so it can be used as an 8051 emulator.

The reason for writing cereal was an 8051 embedded controller which should control an engine using pulse-width modulation, read the resulting flow from a flowmeter, and regulate the output to keep flow at a given value.

In the real world, it takes about two seconds for the algorithm to stabilize, and emulating two seconds using conventional emulators (computing the engine input, the real flow, the feedback frequency) by hand is simply impossible to do.

Using cereal, it took about two hours to create a module emulating the engine/flowmeter combination, along with a window showing the current values. Then it is trivial to connect this module to the 8051 module and just sit back and watch the result.

Another, more trivial example is a multiplexed display/keyboard combination (in my case, selecting one of four 8-segment LCD displays). Instead of watching the port bits, why not create a module that shows the output graphically as four displays?

In addition to these possibilities, cereal offers breakpoints, watches, evaluate/modify dialog (which can solve 2 * x + 1 = 5). The KDE GUI also can be extended using KParts (8051 interface is provided as a KParts plugin).

Also included is a command interface usable for creating testsuites for your programs (or for cereal itself - cereal has over 400 tests in its testsuite), and a simple 8051 disassembler.

Wide Area Link Emulator enables you to set and test various parameters of a WAN access link (also known as a bottleneck link) before testing on a fully-functional network.

Any ISP has a high bandwidth LAN (of the order of tens of Mbps, e.g. Ethernet) and a WAN access link with relatively low speeds (of the order of a few Kbps to a few Mbps). To be able to evaluate the ISPs performance, actual tests will have to be conducted on a live, fully functional network. This would imply enabling certain features in communication equipment which could be detrimental to the proper functioning of a commissioned network. To address such a problem of being able to characterize/quantify the network operation in terms of its performance with respect to various parameters, a test-bed emulating the ISPs connectivity to the Internet would be an ideal solution.

An important factor in setting up such a test-bed, is emulating the WAN Access Link. Using complex hardware is costly. Such a link can however be easily implemented by emulating the scenario on popular physical technology such as Ethernet. By changing the TCP/IP stack on a Personal Computer, the rate at which packets are injected into the network can be controlled and other necessary features can easily be added.

WALE was implemented in 2 phases and the first version can emulated bandwidths up to 8Mbps and uses FIFO queues with drop-tail.

WALE v2 can emulate bandwidths of up to 80Mbps(a 10-fold improvement over version 1) due to the stripped down version of Micro-second resolution timer being used in the Linux kernel. WALE also implements differentiated services are recommended by IETF. A hash-based packet classifier is used to classify packets into one of 3 queues (Expedited Forwarding, Assured Forwarding and Best Effort). A simple priority scheduling has been implemented between the queues.

Version 2 has been implemented in the Generic Device Layer of the Linux Kernel. The kernel version is 2.2.19. WALE2 kernel patch can be downloaded here. An ncurses based front end has been implemented for setting and viewing various parameters of the bottleneck link.

VT6530 Terminal Emulator is a Java implementation of the proprietary terminal used with Tandem mainframes.
The Tandem VT6530 is a proprietary terminal used with their Non-Stop(TM) series of mainframes. These high-reliability machines are popular in the banking industry. If youve ever used an ATM to get cash, youve probably used a VT6530.
The terminal itself can operate in three different mode: conversation, block, and ANSI (VT100). Conversation mode is a simple scrolling text mode with the addition key buffering and text attributes. In block mode, text is displayed in a formated screen with special edit fields. ANSI mode is only used with OSS, Tandems UNIX wanabe operating layer.
Enhancements:
- Autotools support (./configure, make, make check, and make install).
- New telnet and ANSI terminal implementations.
- Linux, Cygwin, and HP NonStop (tandem OSS) builds are not quite running yet.

Network Virtual Terminal for Java is a library that can drive a terminal emulator connected to the application through a telnet session.

Usage:

The API consists of the interface nvt4j.Terminal . The implementation of this class is called nvt4j.impl.Terminal. To allow the user to connect to the application you need to listen for a tcp connection and then wrap a Terminal object around it:

ServerSocket serverSocket = new ServerSocket(8000);
Socket socket = serverSocket.accept();
Terminal terminal = new nvt4j.impl.Terminal(socket);

For example, to run the sample class Example.java from an xterm session, you can
do this:

user@localhost$ java -classpath nvt4j.jar Example &
user@localhost$ telnet localhost 8000

NVT4J uses the Telnet LINEMODE option to put the terminal driver (xterm in this case) in what the posix standard calls raw or non-canonical mode, so that it can receive all user inputs asap, instead of waiting for a new-line character.

Unfortunately in pure Java there is no way to put the operating system console in
raw mode. On Linux and similar systems this is done using the stty command, which is a native program which manipulates the terminal driver in the operating system.

Whats New in This Release:

First alpha release. This code is quite limited but it already provides the basic functions needed to drive a terminal emulator for Java, namely putting the terminal driver in raw mode, turning off the cursor and client-side echo, and detecting the size of the terminal emulator window.

This code has been tested only with xterm.

Gemu News is a SuperKaramba theme that displays the latest version of compatibility layers like wine and the latest version of emulators like dosbox. The version of xqf is also listend.

By clicking on the globe youll get on the homepage of the driver/tool.

Im looking forward for your feedback.

Simple DirectMedia Layer project is a library that gives portable low-level access for multimedia applications.
Simple DirectMedia Layer is a cross-platform multimedia library designed to provide low level access to audio, keyboard, mouse, joystick, 3D hardware via OpenGL, and 2D video framebuffer. It is used by MPEG playback software, emulators, and many popular games, including the award winning Linux port of "Civilization: Call To Power."
SDL supports Linux, Windows, Windows CE, BeOS, MacOS, Mac OS X, FreeBSD, NetBSD, OpenBSD, BSD/OS, Solaris, IRIX, and QNX. The code contains support for AmigaOS, Dreamcast, Atari, AIX, OSF/Tru64, RISC OS, SymbianOS, and OS/2, but these are not officially supported.
SDL is written in C, but works with C++ natively, and has bindings to several other languages, including Ada, C#, Eiffel, Erlang, Euphoria, Guile, Haskell, Java, Lisp, Lua, ML, Objective C, Pascal, Perl, PHP, Pike, Pliant, Python, Ruby, and Smalltalk.
SDL is distributed under GNU LGPL version 2. This license allows you to use SDL freely in commercial programs as long as you link with the dynamic library.
Enhancements:
- Dynamic X11 loading is only enabled with gcc 4 supporting -fvisibility=hidden. This fixes crashes related to symbol collisions, and allows building on Solaris and IRIX.
- Fixed building SDL with Xinerama disabled.
- Fixed DRI OpenGL library loading, using RTLD_GLOBAL in dlopen().
- Added pkgconfig configuration support.

libutempter project provides a library interface for terminal emulators such as screen and xterm to record user sessions to utmp and wtmp files.
Enhancements:
- FreeBSD support has been fixed.

FVWM-Crystal aims to create an easy to use, eye-candy but also powerful desktop environment for Linux or other Unix-like operating systems.
FVWM-Crystal uses following programs: FVWM as a window manager and "main core", ROX-Filer as file manager (manages icons on the desktop), xterm, aterm, mrxvt or urxvt as terminal emulators, MPD or XMMS as music players (theres built-in support for controlling these programs), and several other tools for different functions, like setting a wallpaper or making screen shots.
Main features:
- transparent elements of the interface: panels, menus, dialogs (pseudo-transparency, doesnt show windows underneath)
- window decorations, panel/menu colorsets and desktop wallpaper changeable from the main menu; choice saved for next X sessions
- flexible window decorations: can have different titlebar buttons layout, pixmaps, button functions
- different "desktop layouts" (panel placement and functions, desktop functions, window icons/thumbnails), changeable from the menu
- advanced keyboard support: keybindings for controlling the desktop switching, window management (moving, resizing, focusing, basic operations like minimalization or closing) - nearly 90 different keybindings
- support for controlling music players, using the keyboard or panel buttons and menus; currently MPD and XMMS are supported
- advanced support of the terminal windows: special "QuakeConsole" terminal accessible by an Alt+` (grave) keystroke similar to the console found in FPP games; terminals can be opened using RMB on the desktop; terminal windows dont release focus for newly opened windows (by default)
- a Python script for generating different panels and menus with installed applications - automatically finds programs in $PATH and creates specified menus and panels
- support for nearly 250 different applications - icons, menu/panel database entries, window styles
- different language support using gettext
Features for advanced users
- all FVWM configuration divided into small files in a simple directory structure
- special functions for loading configuration files - allows FVWM configuration files placed in different directories (for example system-wide and user-wide); user files are searched before system-wide files (directory structure must be preserved), first found file is loaded
- simple and easy to use system of "user preferences", adds to the configuration files ability to remember different user choices and recall them at any moment, usually at the startup of X session
- support for system-wide configuration in /etc/X11/fvwm/fvwm-crystal directory as well as user configuration in ~/.fvwm directory - changes in configuration files can be preserved between package updates
- special files called "recipes" - similar to "standard" FVWM configuration model (one configuration - one file), allows for different configurations in the same package (for example different music players changeable during runtime)
- support for different icon themes and sizes (similar to /usr/share/icons directory), included many icons in 22x22, 32x32 and 48x48 sizes