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7.1 Invoking gmixvm

If you have built MDK with GTK+ support (see Installing MDK), a graphical front-end for the MIX virtual machine will be available in your system. You can invoke it by typing

gmixvm [-vhuq] [--version] [--help] [--usage] [--noinit]

at your command prompt, where the options have the following meanings:

User Option: -v
User Option: --version

Prints version and copyleft information and exits.

User Option: -h
User Option: --help
User Option: -u
User Option: --usage

Prints a summary of available options and exits.

User Option: -q
User Option: --noinit

Do not load the Guile initialisation file ~/.mdk/mixguile.scm at startup. This file contains any local Scheme code to be executed by the embedded Guile interpreter at startup (see Using Scheme in mixvm and gmixvm).

Typing gmixvm or gmixvm -q at your command prompt, the main window will appear, offering you a graphical interface to run and debug your MIX programs.


Apart from the menu and status bars, we can distinguish two zones (or halves) in this main window. In the upper half of gmixvm’s main window there is a notebook with three pages, namely,

These three windows can be detached from the notebook, using either the penultimate toolbar button (which detachs the currently visible notebook page) or the menu entries under View->Detached windows.

Here is an screenshot showing how gmixvm looks like when running with a couple of detached windows:


On the other hand, the main window’s lower half presents you a mixvm command prompt and a logging area where results of the issued commands are presented. These widgets implement a mixvm console which offers almost the same functionality as its CLI counterpart.

When gmixvm is run, it creates a directory named .mdk in your home directory (if it does not already exist). The .mdk directory contains the program settings, the device files used by your MIX programs (see Devices), and a command history file.

The following sections describe the above mentioned components of gmixvm.

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