core: Add an overridable logging function

[simavr] / README.md

diff --git a/README.md b/README.md
index 4cf12ad..7cfb3b0 100644 (file)
--- a/README.md
+++ b/README.md
@@ -45,8 +45,18 @@ graphically as “waveforms” with tools like _gtkwave_ (see below).
 * There are a few examples of real life firmwares running on simavr, including OpenGL rendering of the display…
 * There is support for _Arduino_, but no IDE integration
 
-*Note:* a mailing list/google group now exists
-You can also join *#simavr* on Freenode for a very quiet IRC channel.
+Documentation And Further Information
+-------------------------------------
+
+* Manual / Developer Guide: https://github.com/buserror-uk/simavr/blob/master/doc/manual/manual.pdf?raw=true
+* Examples: https://github.com/buserror-uk/simavr/tree/master/examples
+* Mailing List: http://groups.google.com/group/simavr
+* IRC: _#simavr_ on Freenode
+
+Contributing
+------------
+
+Patches are always welcome! Please submit your changes via Github pull requests.
 
 VCD Support -- built in logic analyzer 
 -----------
@@ -104,16 +114,18 @@ ran on the hardware. The key here is to emulate the _parts_ or peripherals that
 are hooked to the AVR. Of course, you don't have to emulate the full hardware, you just
 need to generate the proper stimulus so that the AVR is fooled.
 
-HD77480 LCD Board Demo
+HD44780 LCD Board Demo
 ----------------------
-![lcd](https://github.com/buserror-uk/simavr/raw/master/doc/img/hd77480.png)
 
-This example board hooks up an Atmega48 to an emulated HD77480 LCD and display a running
+![lcd](https://github.com/buserror-uk/simavr/raw/master/doc/img/hd44780.png)
+
+This example board hooks up an Atmega48 to an emulated HD44780 LCD and display a running
 counter in the 'lcd'. Everything is emulated, the firmware runs exactly like this
 on a real hardware.
-![lcd-gtkwave](https://github.com/buserror-uk/simavr/raw/master/doc/img/hd77480.png)
 
-And this is a gtkwave trace of what the firmware is doing. You can zoom in, measure etc
+![lcd-gtkwave](https://github.com/buserror-uk/simavr/raw/master/doc/img/hd44780-wave.png)
+
+And this is a gtkwave trace of what the firmware is doing. You can zoom in, measure, etc
 in gtkwave, select trades to see etc.
 
 Quite a few other examples are available!