Mesa 7i96 Ethernet board

component raw_writer "Example for 7i96 AC outputs";

pin in bit in[6] "The input data to be written"
pin out unsigned address "Connect to raw.write_address";
pin out unsigned data "Connect to raw.write_data";
pin out bit strobe "Connect to raw.write_strobe";

param r state=0 "State machine state";

function _;

;;

FUNCTION(_){
switch (state){
case 0: // begin init
    address = 0x7e00;
    data = 0x1030; //enable AC out, set frequency to 2 MHz
    strobe =  true;
    state = 1;
    break;
case 1:
    strobe = 0;
    state = 2;
    break;
case 2:
    address = 0x1100;
    data = 0x1f800;
    strobe = 1;
    state = 3;
   break;
case 3:
    strobe = 0;
    state = 4;
    break;
case 4:
    address = 0x1200;
    data = 0x1f800;
    strobe = 1;
    state = 5;
   break;
case 5:
    strobe = 0;
    state = 6;
    break;
case 6:
	address = 0x1104;
	data = 0x103ff;
	strobe = 1;
	state = 7;
	break;
case 7
    strobe = 0;
    state = 8;
    break;
case 8:
	address = 0x1204;
	data = 0x103ff;
	strobe = 1;
	state = 9;
	break;
case 9
    strobe = 0;
    state = 10;
    break;
case 10: // setup copmplete, now cycle between last two states to write data
	address = 0x7d00;
	data = in(0) + in(1)<<1 + in(2)<<2 + in(3)<<3 + in(4)<<4 + in(5)<<5;
	strobe = 1;
	state = 20;
	break;
case 20:
	strobe = 0;
	state = 10;
	break;
}
}