KC7WW's C-programming example for the EVM
-----------------------------------------
                Version 4

    Johan Forrer, KC7WW, January 1997

New items for this version:

TEST4,5	--- further exploratory code
CRT.ASM	--- (with some optimizing)


This package now consists of two parts; the first has all the source
code, while the second contains schematics and the memory-mapped
IO that I have been working on. The PAL equations are included
for those interested.

To use this example you should print out the schematic, build as much
of it as you need, install G56K, and assemble/compile/link my examples.
You may also just load them into the debugger to explore them a bit.
It should all run on an unmodified EVM.

I included a number of useful batch files to do some of these tasks
for you. Remember to edit the paths to match your system.

This example initializes the SCI timer and CS4215 CODEC in CRT.ASM and 
runs those as real-time tasks. The C program is a simple loop that awaits
a data sample from the CODEC, then reads the state of the of a switch and 
displays that on an LED. Examples of C and inline assembly are shown.


Planned Future Releases:
------------------------

CODEC data Batching -- version 5
SCI I/O		    -- version 6


Enjoy!

Johan Forrer, KC7WW
forrerj@peak.org



List of Files for Part 1/2:
------------------------------
CRT      ASM  	.............. Startup code for G56K for EVM
CRT      CLN  	..............     and its object module
SIM56K   BAT  	.............. Path to the 56K simulator
G56KENV  BAT  	.............. Setting up your G56K environment
ASM      BAT  	.............. Hand Assemble
CC       BAT  	.............. Use this for building a C COFF object for EVM
TEST1    C    	.............. A simple in-line assembly example
TEST1    CLD  	..............       and its COFF object
TEST2    C    	.............. A simple C-style program example
TEST2    CLD  	..............       and its COFF object
TEST3    C   
TEST3    CLD 
TEST4    C 
TEST5    C 	.............. Saving CODEC data, exploring the OES
                               inline assembly features.
INTEQULC ASM	.............. Useful assembly includes
IOEQULC  ASM
....+ some other tidbits that may or may not be of use


List of Files for Part 2/2:
------------------------------
EVM56K_1 HP     .............. Schematic in HPGL format
EVM56K_1 PS   	.............. Schematic in PostScript

DSPCOMP  JED  	.............. JEDEC file
EVM56K_2 HP   	.............. Scematic for memory-mapped I/O
EVM56K_2 PS  
EVM56K_3 HP  	.............. Equations
EVM56K_3 PS