produced the <code>MODE 7</code> display on the BBC
Microcomputer. It generates characters from a 5 × 9 pixel
matrix, smoothing diagonal lines to produce an interlaced 10 ×
- 18 matrix for each character. This font is generated by an
- extension of the SAA5050’s smoothing algorithm. In addition to
- the characters available from the SAA5050 itself, the font
- includes characters from the other chips in the family
- (including Cyrillic and Hebrew alphabets) and various other
- useful glyphs. All
- glyphs are drawn on the same 5 × 9 pixel grid.</p>
+ 18 matrix for each character. Bedstead extends that algorithm to
+ continuity, converting a 5 × 9 pixel grid into an outline with
+ smooth diagonals.</p>
+ <p>Bedstead includes all the character designs from the SAA5050
+ and its various sister chips, including Cyrillic and Hebrew
+ alphabets. It also has a large number of custom-designed glyphs,
+ all of them of course based on the same 5 × 9 pixel grid.</p>
<p><img alt="[ A sample of Bedstead's characters ]" src="sample.png"/></p>
- <p>The outline version of the font is generated by an ANSI C program
+ <p>The standard version of Bedstead is based on a square pixel
+ grid. This is good for displays with square pixels, but not
+ entirely faithful to the SAA5050. There is a second version,
+ Bedstead Extended, that more accurately reflects the character
+ shapes generated by an SAA5050 driving a 576i display.</p>
+
+ <p>The outline version of Bedstead is generated by an ANSI C program
which emits a Spline Font Database file for use with
<a href="http://fontforge.sourceforge.net/">Fontforge</a>, which
can convert it into most reasonable font formats.</p>
The Spline Font Database file for use with Fontforge.</li>
<li><a href="bedstead.otf"><code>bedstead.otf</code></a> –
The finished font in OpenType format.</li>
+ <li><a href="bedstead-ext.sfd"><code>bedstead-ext.sfd</code></a>,
+ <a href="bedstead-ext.otf"><code>bedstead-ext.otf</code></a> –
+ Spline Font Database and OpenType versions of the extended font.</li>
<li><a href="bedstead-10.bdf"><code>bedstead-10.bdf</code></a>,
<a href="bedstead-20.bdf"><code>bedstead-20.bdf</code></a> –
Bitmap versions at 10 and 20 pixels high.</li>