2016-09-30 23:27:43 +02:00
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# TetrOS
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2016-09-30 23:40:19 +02:00
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TetrOS is a small *feature rich* Tetris clone which is written in Assembly.
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It fits completely into a 512 byte boot sector and is executed during the
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2016-10-01 18:55:52 +02:00
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boot sequence before any operating system is loaded. It does not need any
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existing operating system. TetrOS is its own operating system, hence the suffix
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OS in its name.
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2016-09-30 23:27:43 +02:00
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2016-09-30 23:40:19 +02:00
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This is how it looks like:
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2016-10-01 19:14:37 +02:00
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And this is the complete machine code:
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2016-10-01 18:55:52 +02:00
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2016-09-30 23:40:19 +02:00
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## Features
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2016-09-30 23:27:43 +02:00
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* Each brick shape has a unique color.
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* Blinking cursor is not visible.
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* Left and right arrow to move a brick.
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* Up arrow to rotate a brick.
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* Down arrow to drop a brick.
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2016-09-30 23:40:19 +02:00
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* Game over detection. It stops if a new brick could not be placed.
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* Selects the next brick at random via a linear congruential generator.
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* Shows a nice playing field.
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2016-09-30 23:27:43 +02:00
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2016-09-30 23:40:19 +02:00
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## Features missing due to size limits
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2016-09-30 23:27:43 +02:00
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* Scores and highscores.
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* Intro.
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2016-10-01 18:55:52 +02:00
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* Game over message and restart without rebooting.
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2016-09-30 23:40:19 +02:00
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* Show next brick.
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* Increase speed.
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2016-10-01 18:55:52 +02:00
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## Similar projects
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* https://github.com/dbittman/bootris
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* https://github.com/Shikhin/tetranglix
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* http://olivier.poudade.free.fr/src/BootChess.asm
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