working on text and font support

fonts/dhepper-font8x8/README

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+8x8 monochrome bitmap font for rendering
+=========================================
+
+A collection of header files containing a 8x8 bitmap font.
+
+font8x8.h contains all available characters
+font8x8_basic.h contains unicode points U+0000 - U+007F
+font8x8_latin.h contains unicode points U+0000 - U+00FF
+
+Author: Daniel Hepper <daniel@hepper.net>
+License: Public Domain
+
+Encoding
+========
+Every character in the font is encoded row-wise in 8 bytes.
+
+The least significant bit of each byte corresponds to the first pixel in a
+ row. 
+
+The character 'A' (0x41 / 65) is encoded as 
+{ 0x0C, 0x1E, 0x33, 0x33, 0x3F, 0x33, 0x33, 0x00}
+
+
+    0x0C => 0000 1100 => ..XX....
+    0X1E => 0001 1110 => .XXXX...
+    0x33 => 0011 0011 => XX..XX..
+    0x33 => 0011 0011 => XX..XX..
+    0x3F => 0011 1111 => xxxxxx..
+    0x33 => 0011 0011 => XX..XX..
+    0x33 => 0011 0011 => XX..XX..
+    0x00 => 0000 0000 => ........
+
+To access the nth pixel in a row, right-shift by n.
+
+                         . . X X . . . .
+                         | | | | | | | |
+    (0x0C >> 0) & 1 == 0-+ | | | | | | |
+    (0x0C >> 1) & 1 == 0---+ | | | | | |
+    (0x0C >> 2) & 1 == 1-----+ | | | | |
+    (0x0C >> 3) & 1 == 1-------+ | | | |
+    (0x0C >> 4) & 1 == 0---------+ | | |
+    (0x0C >> 5) & 1 == 0-----------+ | |
+    (0x0C >> 6) & 1 == 0-------------+ |
+    (0x0C >> 7) & 1 == 0---------------+
+
+
+Renderer
+========
+To visualize the font, a simple renderer is included in render.c
+
+    $ gcc render.c -o render
+    $ ./render 65
+      XX    
+     XXXX   
+    XX  XX  
+    XX  XX  
+    XXXXXX  
+    XX  XX  
+    XX  XX
+
+Credits
+=======
+These header files are directly derived from an assembler file fetched from:
+http://dimensionalrift.homelinux.net/combuster/mos3/?p=viewsource&file=/modules/gfx/font8_8.asm
+
+Original header:
+
+; Summary: font8_8.asm
+; 8x8 monochrome bitmap fonts for rendering
+;
+; Author:
+;     Marcel Sondaar
+;     International Business Machines (public domain VGA fonts)
+;
+; License:
+;     Public Domain
+;
+
+