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The console driver provides 12 virtual consoles, 11 reserved
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The console driver provides 12 virtual consoles, 11 reserved
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for applications, console 12 is reserved for kernel console. Pressing
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for applications, console 12 is reserved for kernel console. Pressing
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function keys F1-F12 switches between the consoles.
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function keys F1-F12 switches between the consoles.
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If the architecture supports framebuffer device larger with
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resolution at least 800x600, nice graphical console is shown. At the top
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of the screen a row of buttons for the virtual console is drawn. If
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the button contains console number, an application is connected to it.
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The red button signifies that there was an activity on the terminal
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since it was last shown to the user.
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\section{KConsole}
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\section{KConsole}
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KConsole is a kernel thread operating completely in priviledged mode.
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KConsole is a kernel thread operating completely in priviledged mode.
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It allows user to interact directly with the kernel and even start directly
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It allows user to interact directly with the kernel and even start directly
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functions inside the kernel.
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functions inside the kernel.
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\end{description}
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\end{description}
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The mips, ia32 and amd64 platforms provide additional commands regarding
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The mips, ia32 and amd64 platforms provide additional commands regarding
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debugging facility - set and clear hardware breakpoints and watchpoints.
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debugging facility - set and clear hardware breakpoints and watchpoints.
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\section{KConsole Task Control}
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KConsole {\em call} commands can be used to start and kill the tasks.
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To repeatably start the task, the following procedure should be used:
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\begin{verbatim}
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.... kernel boot data ....
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init[8].addr=0x8027b000, init[8].size=86016
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.... rest of boot data ...
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kconsole> call2 task_run_program 0x8027b000 0
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Calling f(0x8027b000,0): 0x80119283: generic/src/proc/task.o:task_run_program
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Result: 0x80086500
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\end{verbatim}
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To kill a task, the function {\em task\_kill} is appropriate. The {\em taskid}
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parameter is a 64-bit number on all platforms, thus on the 32-bit platforms
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call2 should be used with 2 32-bit parameters instead.
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\begin{verbatim}
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kconsole> call2 task_kill 8 0
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Calling f(0x8,0x0): 0x801197e8: generic/src/proc/task.o:task_kill
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Result: 0x0
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\end{verbatim}
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\section{Emergency Functions}
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\section{Emergency Functions}
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It may happen that the IPC communication dies or that there appear some
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It may happen that the IPC communication dies or that there appear some
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problems in the communication chain
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problems in the communication chain
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{\em keboard driver} - {\em console} - {\em output driver}.
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{\em keboard driver} - {\em console} - {\em output driver}.
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As long that at least the keyboard driver works, pressing Escape key three
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As long that at least the keyboard driver works, pressing Escape key three
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buffer communication between kernel and userspace area is established.
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buffer communication between kernel and userspace area is established.
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Non-critical messages are sent to the
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Non-critical messages are sent to the
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KLog application. User can see messages about task faults
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KLog application. User can see messages about task faults
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and task cleanup completion.
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and task cleanup completion.
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\section{IPCC - testing applicatoin}
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\section{IPCC - testing application}
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To test thouroughly some aspects of the IPC and task
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To test thouroughly some aspects of the task activities, IPCC application
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allows user to generate page faults
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\section{Tetris}
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\section{Tetris}
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