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ubb-vga/web/: link to medium-size images, not full size; some rewording
- Makefile, index.html: generate Web-friendly 1024x768 images and link to these, instead of the full-sized monsters - index.html: minor rewording - index.html: corrected capitalization of "NanoNote"
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@ -5,8 +5,9 @@ NORMALIZESCHPS=$(SCHHIST)/normalizeschps
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SRC=http://downloads.qi-hardware.com/people/werner/ubb/vga
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DL=ubb-vga-pub-1024.jpg ubb-vga-pub-plugged.jpg ubb-vga-pub-v2.jpg
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GEN= ubb-vga-pub-1024-small.jpg ubb-vga-pub-plugged-small.jpg \
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ubb-vga-pub-v2-small.jpg \
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GEN= ubb-vga-pub-1024-small.jpg ubb-vga-pub-1024-medium.jpg \
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ubb-vga-pub-plugged-small.jpg ubb-vga-pub-plugged-medium.jpg \
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ubb-vga-pub-v2-small.jpg ubb-vga-pub-v2-medium.jpg \
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ubb-vga-schem.png ubb-vga-schem-small.png
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@ -42,6 +43,15 @@ ubb-vga-pub-v2-small.jpg: ubb-vga-pub-v2.jpg
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ubb-vga-pub-plugged-small.jpg: ubb-vga-pub-plugged.jpg
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convert $< -scale x240 $@
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ubb-vga-pub-1024-medium.jpg: ubb-vga-pub-1024.jpg
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convert $< -resize 1024x768 $@
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ubb-vga-pub-v2-medium.jpg: ubb-vga-pub-v2.jpg
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convert $< -resize 1024x768 $@
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ubb-vga-pub-plugged-medium.jpg: ubb-vga-pub-plugged.jpg
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convert $< -resize 1024x768 $@
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ubb-vga-schem-small.png: ubb-vga-schem.png
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convert $< -scale '40%' $@
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@ -10,19 +10,19 @@ This is an effort led by Werner Almesberger to use the
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<A href="http://en.qi-hardware.com/wiki/UBB">UBB</A>
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(Universal Breakout Board), a few resistors, and a VGA cable to create a
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workable VGA signal on the
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<A href="http://en.qi-hardware.com/wiki/Ben_NanoNote">Ben Nanonote</A>.
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<A href="http://en.qi-hardware.com/wiki/Ben_NanoNote">Ben NanoNote</A>.
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<H2>What it can do</H2>
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The video signal timing is controlled by software. Available resolutions
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include 640x480 and 800x600.
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The video signal timing is controlled mostly by software. Available
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resolutions include 640x480 and 800x600.
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At present, the maximum resolution is 1024x768 with a refresh rate of 50 Hz:
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<P>
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<A href="ubb-vga-pub-1024.jpg"><IMG src="ubb-vga-pub-1024-small.jpg"></A>
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<A href="ubb-vga-pub-1024-medium.jpg"><IMG src="ubb-vga-pub-1024-small.jpg"></A>
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<P>
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The 16 colors are generated from a binary channel for red, green, and blue
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each, plus a binary luminance channel that affects all colors.
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each, plus a binary luminance channel that affects all three color channels.
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<H2>The hardware</H2>
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@ -32,14 +32,14 @@ The current design is based on the
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that plugs into the Ben's
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<A href="http://lists.en.qi-hardware.com/pipermail/discussion/2011-January/006908.html">8:10 card</A>
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slot. The MMC controller in the Ben's Jz4720 CPU is tricked into
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considering the UBB-VGA board as a MMC/SD device and streaming the pixel
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considering the UBB-VGA board as a MMC/SD device and streams the pixel
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data at a rate of up to 56 MHz.
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<P>
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The pictures below show a prototype that connects directly to a VGA cable:
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</P>
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<A href="ubb-vga-pub-plugged.jpg"><IMG src="ubb-vga-pub-plugged-small.jpg"></A>
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<A href="ubb-vga-pub-plugged-medium.jpg"><IMG src="ubb-vga-pub-plugged-small.jpg"></A>
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<A href="ubb-vga-pub-v2.jpg"><IMG src="ubb-vga-pub-v2-small.jpg"></A>
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<A href="ubb-vga-pub-v2-medium.jpg"><IMG src="ubb-vga-pub-v2-small.jpg"></A>
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<P>
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The circuit is very simple. In its most basic form, it consists of UBB,
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ten resistors, and the VGA cable:
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