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+# Running the demo
+
+I would make a snarky comment about trivial exercises left up to the reader,
+but that would be evil. Don't do this, don't be evil.
+
+I am not great at assembly, or configuring my linker (ld65), and this is not
+a single, self-contained binary.
+
+To view the complete effect, htimg.bin must be loaded into three places in
+memory using BLOAD.
+
+```
+BLOAD HTIMG.BIN,$A2000
+BLOAD HTIMG.BIN,A$4004
+BLOAD HTIMG.BIN,A$6000
+BRUN DEMO.BIN
+```
+
+The graphics data at $6000 is a cache for real-time effects. The memory 
+addresses $2000 and $4000 are the high-res graphics mode page 1 and page 2
+buffers. The data is loaded into $4004 to fix a byte offset error. This is
+intended, because, the same data loaded into $2000 causes an intentional
+rendering issue.
+
+If I had spent more time using the indirect indexed addressing mode in more
+places I could minimize this to a single BLOAD, but I haven't improved it in
+this way yet. If anyone can help me configure ld65 to include the $2000 bytes
+of graphics data directly in the executable, I would be very grateful.
+AppleDOS throws I/O errors when I have tried.
+
+I'll upload the binaries as well, in case people don't want to assemble their
+own. I ran this on the Virtual ][ emulator, although I needed to configure the
+file as "binary, strip prefix $8000" for it to run properly. Your emulator may
+not have this feature, it hasn't been tested on real hardware, and this may
+be a quirk of me not knowing what I'm doing. :)