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< h1 > Fonts< a class = "headerlink" href = "#fonts" title = "Link to this heading" > < / a > < / h1 >
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< p > Two type of fonts are supported by this driver fixed size bitmap fonts
converted from PC Bios images using the font_from_romfont utility and fixed or proportional fonts converted from True-Type fonts using the font2bitmap utility.< / p >
< p > The rom fonts are available in 128 and 256 PC character sets in 8x8, 8x16, 16x6 and 16x32 pixel sizes. They written using the text method.< / p >
< p > The True-Type fonts can be converted to any size as long as the widest
character is 256 pixels or less. They are written using the write method.< / p >
< p > Pre-compiling the font files to .mpy files will significantly reduce the memory required for the fonts.< / p >
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< section id = "rom-font-conversion" >
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< h2 > Rom Font Conversion< a class = "headerlink" href = "#rom-font-conversion" title = "Link to this heading" > < / a > < / h2 >
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< p > The < cite > utils< / cite > directory contains the font_from_romfont.py program used to convert PC BIOS bitmap fonts from the font-bin directory of spacerace’
< a class = "reference external" href = "https://github.com/spacerace/romfont" > https://github.com/spacerace/romfont< / a > repo.< / p >
< p > The utility converts all romfont bin files in the specified -input-directory (-i) and writes python font files to the specified -output-directory (-o).< / p >
< p > Characters included can be limited by using the -first-char (-f) and -last-char (-l) options.< / p >
< p > Example:< / p >
< blockquote >
< div > < p > font_from_romfont -i font-bin -o fonts -f 32 -l 127< / p >
< / div > < / blockquote >
< div class = "literal-block-wrapper docutils container" id = "id2" >
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< div class = "code-block-caption" > < span class = "caption-text" > Sample converted romfont font module.< / span > < a class = "headerlink" href = "#id2" title = "Link to this code" > < / a > < / div >
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< div class = "highlight-python notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "linenos" > 1< / span > < span class = "sd" > " " " converted from vga_8x8.bin " " " < / span >
< span class = "linenos" > 2< / span >
< span class = "linenos" > 3< / span > < span class = "c1" > # font width< / span >
< span class = "linenos" > 4< / span > < span class = "n" > WIDTH< / span > < span class = "o" > =< / span > < span class = "mi" > 8< / span >
< span class = "linenos" > 5< / span >
< span class = "linenos" > 6< / span > < span class = "c1" > # font height< / span >
< span class = "linenos" > 7< / span > < span class = "n" > HEIGHT< / span > < span class = "o" > =< / span > < span class = "mi" > 8< / span >
< span class = "linenos" > 8< / span >
< span class = "linenos" > 9< / span > < span class = "c1" > # first character in front< / span >
< span class = "linenos" > 10< / span > < span class = "n" > FIRST< / span > < span class = "o" > =< / span > < span class = "mh" > 0x20< / span >
< span class = "linenos" > 11< / span >
< span class = "linenos" > 12< / span > < span class = "c1" > # last character in font< / span >
< span class = "linenos" > 13< / span > < span class = "n" > LAST< / span > < span class = "o" > =< / span > < span class = "mh" > 0x7f< / span >
< span class = "linenos" > 14< / span >
< span class = "linenos" > 15< / span > < span class = "c1" > # bitmap of each character from FIRST to LAST< / span >
< span class = "linenos" > 16< / span > < span class = "n" > _FONT< / span > < span class = "o" > =< / span > \
< span class = "linenos" > 17< / span > < span class = "sa" > b< / span > < span class = "s1" > ' < / span > < span class = "se" > \x00\x00\x00\x00\x00\x00\x00\x00< / span > < span class = "s1" > ' < / span > \
< span class = "linenos" > 18< / span > < span class = "sa" > b< / span > < span class = "s1" > ' < / span > < span class = "se" > \x18\x3c\x3c\x18\x18\x00\x18\x00< / span > < span class = "s1" > ' < / span > \
< span class = "linenos" > 19< / span > < span class = "sa" > b< / span > < span class = "s1" > ' < / span > < span class = "se" > \x66\x66\x24\x00\x00\x00\x00\x00< / span > < span class = "s1" > ' < / span > \
< span class = "linenos" > 20< / span >
< span class = "linenos" > 21< / span > < span class = "o" > ...< / span > < span class = "n" > many< / span > < span class = "n" > more< / span > < span class = "n" > lines< / span > < span class = "n" > of< / span > < span class = "n" > data< / span > < span class = "o" > ...< / span >
< span class = "linenos" > 22< / span >
< span class = "linenos" > 23< / span > < span class = "sa" > b< / span > < span class = "s1" > ' < / span > < span class = "se" > \x70\x18\x18\x0e\x18\x18\x70\x00< / span > < span class = "s1" > ' < / span > \
< span class = "linenos" > 24< / span > < span class = "sa" > b< / span > < span class = "s1" > ' < / span > < span class = "se" > \x76\xdc\x00\x00\x00\x00\x00\x00< / span > < span class = "s1" > ' < / span > \
< span class = "linenos" > 25< / span > < span class = "sa" > b< / span > < span class = "s1" > ' < / span > < span class = "se" > \x00\x10\x38\x6c\xc6\xc6\xfe\x00< / span > < span class = "s1" > ' < / span > \
< span class = "linenos" > 26< / span >
< span class = "linenos" > 27< / span > < span class = "n" > FONT< / span > < span class = "o" > =< / span > < span class = "nb" > memoryview< / span > < span class = "p" > (< / span > < span class = "n" > _FONT< / span > < span class = "p" > )< / span >
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< / pre > < / div >
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< / div >
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< / div >
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< / section >
< section id = "true-type-font-conversion" >
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< h2 > True-Type Font Conversion< a class = "headerlink" href = "#true-type-font-conversion" title = "Link to this heading" > < / a > < / h2 >
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< p > The < cite > utils< / cite > directory contains the < cite > font2bitmap.py< / cite > program used to convert True-Type font into bitmap font modules. Use the -h option to see details of the available options. The < cite > font2bitmap.py< / cite > program uses font handling classes from Dan Bader blog post on using freetype
< a class = "reference external" href = "http://dbader.org/blog/monochrome-font-rendering-with-freetype-and-python" > http://dbader.org/blog/monochrome-font-rendering-with-freetype-and-python< / a > and
the negative glyph.left fix from peterhinch’
< a class = "reference external" href = "https://github.com/peterhinch/micropython-font-to-py" > https://github.com/peterhinch/micropython-font-to-py< / a > .< / p >
< p > The utility requires the python freetype module.< / p >
< p > Example use:< / p >
< ul class = "simple" >
< li > < p > ./font2bitmap NotoSans-Regular.ttf 32 -s “0123456789ABCEDF”< / p > < / li >
< li > < p > ./font2bitmap.py Chango-Regular.ttf 16 -c 0x20-0x7f< / p > < / li >
< / ul >
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< div class = "literal-block-wrapper docutils container" id = "id3" >
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< div class = "code-block-caption" > < span class = "caption-text" > Sample converted TrueType font module.< / span > < a class = "headerlink" href = "#id3" title = "Link to this code" > < / a > < / div >
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< div class = "highlight-python notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "linenos" > 1< / span > < span class = "c1" > # -*- coding: utf-8 -*-< / span >
< span class = "linenos" > 2< / span > < span class = "c1" > # Converted from Chango-Regular.ttf using:< / span >
< span class = "linenos" > 3< / span > < span class = "c1" > # ./font2bitmap.py Chango-Regular.ttf 16 -c 0x20-0x7f< / span >
< span class = "linenos" > 4< / span >
< span class = "linenos" > 5< / span > < span class = "c1" > # Maps the order of the character data< / span >
< span class = "linenos" > 6< / span > < span class = "n" > MAP< / span > < span class = "o" > =< / span > < span class = "s2" > " !< / span > < span class = "se" > \" < / span > < span class = "s2" > #$%& ' ()*+,-./0123456789:;< => ?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[< / span > < span class = "se" > \\< / span > < span class = "s2" > ]^_`abcdefghijklmnopqrstuvwxyz{|}~ " < / span >
< span class = "linenos" > 7< / span >
< span class = "linenos" > 8< / span > < span class = "c1" > # Number of color bits per pixel, currently only 1 is used but could be< / span >
< span class = "linenos" > 9< / span > < span class = "c1" > # increased to support antialiased or smoothed fonts in the future.< / span >
< span class = "linenos" > 10< / span > < span class = "n" > BPP< / span > < span class = "o" > =< / span > < span class = "mi" > 1< / span >
< span class = "linenos" > 11< / span >
< span class = "linenos" > 12< / span > < span class = "c1" > # Font height< / span >
< span class = "linenos" > 13< / span > < span class = "n" > HEIGHT< / span > < span class = "o" > =< / span > < span class = "mi" > 17< / span >
< span class = "linenos" > 14< / span >
< span class = "linenos" > 15< / span > < span class = "c1" > # Font max width< / span >
< span class = "linenos" > 16< / span > < span class = "n" > MAX_WIDTH< / span > < span class = "o" > =< / span > < span class = "mi" > 24< / span >
< span class = "linenos" > 17< / span >
< span class = "linenos" > 18< / span > < span class = "c1" > # one byte per character table of widths in the same order as the MAP string< / span >
< span class = "linenos" > 19< / span > < span class = "n" > _WIDTHS< / span > < span class = "o" > =< / span > \
< span class = "linenos" > 20< / span > < span class = "sa" > b< / span > < span class = "s1" > ' < / span > < span class = "se" > \x06\x08\x0a\x0e\x0d\x18\x10\x06\x08\x08\x0a\x0d\x06\x08\x06\x0b< / span > < span class = "s1" > ' < / span > \
< span class = "linenos" > 21< / span >
< span class = "linenos" > 22< / span > < span class = "o" > ...< / span > < span class = "n" > more< / span > < span class = "n" > lines< / span > < span class = "n" > of< / span > < span class = "n" > data< / span > < span class = "o" > ...< / span >
< span class = "linenos" > 23< / span >
< span class = "linenos" > 24< / span > < span class = "sa" > b< / span > < span class = "s1" > ' < / span > < span class = "se" > \x0d\x0d\x0b\x0a\x0b\x0e\x0c\x12\x0d\x0c\x0b\x09\x06\x09\x0e\x0b< / span > < span class = "s1" > ' < / span >
< span class = "linenos" > 25< / span >
< span class = "linenos" > 26< / span > < span class = "c1" > # OFFSET_WIDTH bytes per character in the same order as the MAP string< / span >
< span class = "linenos" > 27< / span > < span class = "c1" > # to the start of each character in bits.< / span >
< span class = "linenos" > 28< / span > < span class = "n" > OFFSET_WIDTH< / span > < span class = "o" > =< / span > < span class = "mi" > 2< / span >
< span class = "linenos" > 29< / span > < span class = "n" > _OFFSETS< / span > < span class = "o" > =< / span > \
< span class = "linenos" > 30< / span > < span class = "sa" > b< / span > < span class = "s1" > ' < / span > < span class = "se" > \x00\x00\x00\x66\x00\xee\x01\x98\x02\x86\x03\x63\x04\xfb\x06\x0b< / span > < span class = "s1" > ' < / span > \
< span class = "linenos" > 31< / span >
< span class = "linenos" > 32< / span > < span class = "o" > ...< / span > < span class = "n" > more< / span > < span class = "n" > lines< / span > < span class = "n" > of< / span > < span class = "n" > data< / span > < span class = "o" > ...< / span >
< span class = "linenos" > 33< / span >
< span class = "linenos" > 34< / span > < span class = "sa" > b< / span > < span class = "s1" > ' < / span > < span class = "se" > \x49\x94\x4a\x71\x4b\x3d\x4b\xf8\x4c\x91\x4c\xf7\x4d\x90\x4e\x7e< / span > < span class = "s1" > ' < / span >
< span class = "linenos" > 35< / span >
< span class = "linenos" > 36< / span > < span class = "c1" > # character bitmaps per character in the same order as the MAP string.< / span >
< span class = "linenos" > 37< / span > < span class = "c1" > # Note: character data may not start on byte boundaries< / span >
< span class = "linenos" > 38< / span > < span class = "n" > _BITMAPS< / span > < span class = "o" > =< / span > \
< span class = "linenos" > 39< / span > < span class = "sa" > b< / span > < span class = "s1" > ' < / span > < span class = "se" > \x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x61< / span > < span class = "s1" > ' < / span > \
< span class = "linenos" > 40< / span >
< span class = "linenos" > 41< / span > < span class = "o" > ...< / span > < span class = "n" > many< / span > < span class = "n" > more< / span > < span class = "n" > lines< / span > < span class = "n" > of< / span > < span class = "n" > data< / span > < span class = "o" > ...< / span >
< span class = "linenos" > 42< / span >
< span class = "linenos" > 43< / span > < span class = "sa" > b< / span > < span class = "s1" > ' < / span > < span class = "se" > \x3d\xe3\xfc\x00\x00\x00\x00\x00< / span > < span class = "s1" > ' < / span >
< span class = "linenos" > 44< / span >
< span class = "linenos" > 45< / span > < span class = "n" > WIDTHS< / span > < span class = "o" > =< / span > < span class = "nb" > memoryview< / span > < span class = "p" > (< / span > < span class = "n" > _WIDTHS< / span > < span class = "p" > )< / span >
< span class = "linenos" > 46< / span > < span class = "n" > OFFSETS< / span > < span class = "o" > =< / span > < span class = "nb" > memoryview< / span > < span class = "p" > (< / span > < span class = "n" > _OFFSETS< / span > < span class = "p" > )< / span >
< span class = "linenos" > 47< / span > < span class = "n" > BITMAPS< / span > < span class = "o" > =< / span > < span class = "nb" > memoryview< / span > < span class = "p" > (< / span > < span class = "n" > _BITMAPS< / span > < span class = "p" > )< / span >
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< / pre > < / div >
< / div >
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< / div >
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< / section >
< section id = "x8-rom-fonts" >
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< h2 > 8x8 Rom Fonts< a class = "headerlink" href = "#x8-rom-fonts" title = "Link to this heading" > < / a > < / h2 >
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< figure class = "align-center" id = "id4" >
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< img alt = "_images/vga1_8x8.png" src = "_images/vga1_8x8.png" / >
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< figcaption >
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< p > < span class = "caption-text" > vga1_8x8.py: 128 Character 8x8 Font< / span > < a class = "headerlink" href = "#id4" title = "Link to this image" > < / a > < / p >
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< / figcaption >
< / figure >
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< div class = "line-block" >
< div class = "line" > < br / > < / div >
< / div >
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< figure class = "align-center" id = "id5" >
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< img alt = "_images/vga2_8x8.png" src = "_images/vga2_8x8.png" / >
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< figcaption >
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< p > < span class = "caption-text" > vga2_8x8.py: 256 Character 8x8 Font< / span > < a class = "headerlink" href = "#id5" title = "Link to this image" > < / a > < / p >
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< / figcaption >
< / figure >
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< div class = "line-block" >
< div class = "line" > < br / > < / div >
< / div >
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< / section >
< section id = "x16-rom-fonts" >
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< h2 > 8x16 Rom Fonts< a class = "headerlink" href = "#x16-rom-fonts" title = "Link to this heading" > < / a > < / h2 >
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< figure class = "align-center" id = "id6" >
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< img alt = "_images/vga1_8x16.png" src = "_images/vga1_8x16.png" / >
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< figcaption >
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< p > < span class = "caption-text" > vga1_8x16.py: 128 Character 8x16 Font< / span > < a class = "headerlink" href = "#id6" title = "Link to this image" > < / a > < / p >
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< / figcaption >
< / figure >
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< div class = "line-block" >
< div class = "line" > < br / > < / div >
< / div >
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< figure class = "align-center" id = "id7" >
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< img alt = "_images/vga2_8x16.png" src = "_images/vga2_8x16.png" / >
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< figcaption >
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< p > < span class = "caption-text" > vga2_8x16.py: 256 Character 8x16 Font< / span > < a class = "headerlink" href = "#id7" title = "Link to this image" > < / a > < / p >
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< / figcaption >
< / figure >
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< div class = "line-block" >
< div class = "line" > < br / > < / div >
< / div >
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< / section >
< section id = "id1" >
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< h2 > 16x16 Rom Fonts< a class = "headerlink" href = "#id1" title = "Link to this heading" > < / a > < / h2 >
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< figure class = "align-center" id = "id8" >
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< img alt = "_images/vga1_16x16.png" src = "_images/vga1_16x16.png" / >
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< figcaption >
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< p > < span class = "caption-text" > vga1_16x16.py: 128 Character 16x16 Thin Font< / span > < a class = "headerlink" href = "#id8" title = "Link to this image" > < / a > < / p >
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< / figcaption >
< / figure >
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< div class = "line-block" >
< div class = "line" > < br / > < / div >
< / div >
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< figure class = "align-center" id = "id9" >
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< img alt = "_images/vga1_bold_16x16.png" src = "_images/vga1_bold_16x16.png" / >
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< figcaption >
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< p > < span class = "caption-text" > vga1_bold_16x16.py: 128 Character 16x16 Bold Font< / span > < a class = "headerlink" href = "#id9" title = "Link to this image" > < / a > < / p >
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< / figcaption >
< / figure >
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< div class = "line-block" >
< div class = "line" > < br / > < / div >
< / div >
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< figure class = "align-center" id = "id10" >
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< img alt = "_images/vga2_16x16.png" src = "_images/vga2_16x16.png" / >
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< figcaption >
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< p > < span class = "caption-text" > vga2_16x16.py: 256 Character 16x16 Thin Font< / span > < a class = "headerlink" href = "#id10" title = "Link to this image" > < / a > < / p >
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< / figcaption >
< / figure >
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< div class = "line-block" >
< div class = "line" > < br / > < / div >
< / div >
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< figure class = "align-center" id = "id11" >
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< img alt = "_images/vga2_bold_16x16.png" src = "_images/vga2_bold_16x16.png" / >
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< figcaption >
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< p > < span class = "caption-text" > vga2_bold_16x16.py: 256 Character 16x16 Bold Font< / span > < a class = "headerlink" href = "#id11" title = "Link to this image" > < / a > < / p >
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< / figcaption >
< / figure >
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< div class = "line-block" >
< div class = "line" > < br / > < / div >
< / div >
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< / section >
< section id = "x32-rom-fonts" >
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< h2 > 16x32 Rom Fonts< a class = "headerlink" href = "#x32-rom-fonts" title = "Link to this heading" > < / a > < / h2 >
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< figure class = "align-center" id = "id12" >
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< img alt = "_images/vga1_16x32.png" src = "_images/vga1_16x32.png" / >
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< figcaption >
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< p > < span class = "caption-text" > vga1_16x32.py: 128 Character 16x32 Thin Font< / span > < a class = "headerlink" href = "#id12" title = "Link to this image" > < / a > < / p >
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< / figcaption >
< / figure >
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< div class = "line-block" >
< div class = "line" > < br / > < / div >
< / div >
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< figure class = "align-center" id = "id13" >
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< img alt = "_images/vga1_bold_16x32.png" src = "_images/vga1_bold_16x32.png" / >
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< figcaption >
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< p > < span class = "caption-text" > vga1_bold_16x32.py: 128 Character 16x32 Bold Font< / span > < a class = "headerlink" href = "#id13" title = "Link to this image" > < / a > < / p >
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< / figcaption >
< / figure >
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< div class = "line-block" >
< div class = "line" > < br / > < / div >
< / div >
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< figure class = "align-center" id = "id14" >
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< img alt = "_images/vga2_16x32.png" src = "_images/vga2_16x32.png" / >
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< figcaption >
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< p > < span class = "caption-text" > vga2_16x32.py: 256 Character 16x32 Thin Font< / span > < a class = "headerlink" href = "#id14" title = "Link to this image" > < / a > < / p >
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< / figcaption >
< / figure >
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< div class = "line-block" >
< div class = "line" > < br / > < / div >
< / div >
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< figure class = "align-center" id = "id15" >
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< img alt = "_images/vga2_bold_16x32.png" src = "_images/vga2_bold_16x32.png" / >
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< figcaption >
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< p > < span class = "caption-text" > vga2_bold_16x32.py: 256 Character 16x32 Bold Font< / span > < a class = "headerlink" href = "#id15" title = "Link to this image" > < / a > < / p >
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< / figcaption >
< / figure >
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< div class = "line-block" >
< div class = "line" > < br / > < / div >
< / div >
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< / section >
< / section >
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< a href = "examples_pi_pico.html" class = "btn btn-neutral float-left" title = "Raspberry Pi Pico Examples" accesskey = "p" rel = "prev" > < span class = "fa fa-arrow-circle-left" aria-hidden = "true" > < / span > Previous< / a >
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jQuery(function () {
SphinxRtdTheme.Navigation.enable(true);
});
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< / script >
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< / body >
< / html >
