Added assembled examples and a C99 reference implementation

README.md

@@ -254,6 +254,9 @@ repository, or even by hand (by numbering lines, resolving the labels and
 replacing mnemonics with corresponding opcodes). The "Hellorld!" example only
 works on the platforms supporting I/O port 1 (character output).
 
+If you just want to test an implementation, assembled MU8 machine code files
+(in the plaintext format) are stored in the `examples/assembled` subdirectory.
+
 Reference implementations
 -------------------------
 
@@ -266,6 +269,11 @@ Reference implementations
   character input port correctly on desktop OSes but falls back to a simple
   stream file read in case the library is not found). Accepts a file name to
   preload a MU8 (plain text) machine code program from the OS command line.
+* [ISO C99 implementation](mu808.c): supports the entire specification the
+  same way as the Python implementation, and also makes use of the optimized
+  `fma()` call that appeared in the C99 standard. Accepts a file name to preload
+  a MU8 machine code program from the OS command line. Compile the source with:
+  `cc -std=c99 -O2 -s -lm -o mu808 mu808.c`
 
 ### Assembler reference implementations