This directory contains pdf files that describe the Errata known so far in Gryphon Errata and Build Notes.
The second pdf file is the PCB board with shows the places that traces need to be cut on the top and bottom
traces.  Not the bottom layer is a view from the top through the board and is a mirror image of what you see
when you flip the board.  The numbers near the red lines where the trace should be cut are referenced in the 
first pdf file.

The .pld files are the modifications I have written to get the board to work so far.

The Gryphon-software folder contains 3 test programs at the moment.  They include source, objs, bin and a Makefile
for each directory.  I am using the GNU gcc tool chain for elf format version 4.6.2.  This is not the latest version
but I will be moving up to 4.9.X at some time in the near future.  I use eclipse CDT as an IDE for development and 
will include a image of what that looks like in this folder.  I find it very productive.

A brief description and the order of usage for programs:

scream - is a simple program that loops and puts a 3 to serial terminal at 9600 baud with 2 stop bits and no parity.
This program should be your first diagnostic program to run as without some form of output you are not going to
get very far.  This program requires no memory or stack to work.

echo - test the typing of characters at serial console and they are echoed back.  Next logical program.  Again requires
no memory or stack to work.

sramtest - will test the sram on the board by writing patterns and reading them back.  When working you should see
S1234
S1234
etc   on the screen.  Again this program requires no stack or memory to function.

dramtest - this will do the same for dram as the sramtest above.  It is still under development and may change.

Good Luck

Dave (aka Yoda)