readme in English

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JaCzekanski · Jan 27, 2014 · e35137e · e35137e
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+## VGA Tetris - assembly, atmega8, software vga
+
+![front](front.png)
+
+Yeah, I know. Yet another tetris. But how mine clone is different?  
+- Architecture - it's not a PC, smartphone or cellphone, I've created my own platform based on 8bit microcontroller
+- Code - I decided to write whole game in assembly
+
+
+Specification
+Processor: Atmega8 (8kB flash, 1kB SRAM) 
+Graphics: 104x120px, 16colors 
+Input: Gamepad from Pegasus (Polish Famicom clone) (8 buttons) 
+Audio: Mono, generated using PWM (unfortunately, not implemented, not enough time) 
+
+
+
+# Why?  
+Project was made for contest on Elektroda.pl (Retro game). Contest was a good motivation for learning AVR architecture from the low level (assembly).  
+Also I've learned how to generate VGA image in software and I have managed to carry my project from an idea in my mind to physical, working device.  
+
+
+
+# Result?  
+Finished and working "console" with clone of Tetris, second place in a contest, above 2000 lines of code in pure assembly, pride from finishing a project (from game project, schematics, PCB to working console).
+
+
+
+# What is so hard?  
+The fact, that I don't have a library like SDL or Allegro, where I call function to display image on a monitor. I don't have any functions, operating system or even something like BIOS. Everything was implemented from scratch, including video generation line by line (the graphics card job) where I had to count instruction cycle based, in other case the video becomes desynchronized or was displayed wrong. Next I've implemented high level functions like displaying a tile and later - fonts and images.
+
+
+
+Presentation (in Polish):  
+
+https://www.youtube.com/watch?v=FwZ4Or7Z6ZU
+
+![schematics](schematics/schematics.png)
+![top](photos/top.jpg)
+![board](photos/board.jpg)
+
+More info (in Polish): http://www.elektroda.pl/rtvforum/topic2177246.html  
+
+Linus "lft" Akesson has made a demo on this micro - VGA display, chiptune music, awesome effects, must see!
+http://www.linusakesson.net/scene/craft/  
+
+Zobacz plik "vga_generacja" jeżeli interesuje cie temat generowania obrazu VGA.