/* Symbol Table */
// counter_port = CONSTANT: 4
// drive_wave = LABEL: 3
// int_routine = LABEL: 688
// interrupt_counter = REGISTER: 26
// loop = LABEL: 5
// pattern_10101010 = CONSTANT: 170
// s0 = REGISTER: 0
// s1 = REGISTER: 1
// s2 = REGISTER: 2
// s3 = REGISTER: 3
// s4 = REGISTER: 4
// s5 = REGISTER: 5
// s6 = REGISTER: 6
// s7 = REGISTER: 7
// s8 = REGISTER: 8
// s9 = REGISTER: 9
// sA = REGISTER: 10
// sB = REGISTER: 11
// sC = REGISTER: 12
// sD = REGISTER: 13
// sE = REGISTER: 14
// sF = REGISTER: 15
// start = LABEL: 0
// waveform_port = CONSTANT: 2

/* Program Code */
// #1: ;Interrupt example
// #2: ;
// #3: constant(waveform_port,2) ;bit0 will be data
// #4: constant(counter_port,4)
// #5: constant(pattern_10101010,170)
// #6: register(interrupt_counter,26)
// #7: ;
// @000 #8: [start]
01a00 // @000 #8: load(interrupt_counter,0) ;reset interrupt counter
002aa // @001 #9: load(s2,pattern_10101010) ;initial output condition
3c001 // @002 #10: interrupt(enable)
// #11: ;
// @003 #12: [drive_wave]
2c202 // @003 #12: output(s2,waveform_port)
00007 // @004 #13: load(s0,7) ;delay size
// @005 #14: [loop]
1c001 // @005 #14: sub(s0,1) ;delay loop
35405 // @006 #15: jump(nz,loop)
0e2ff // @007 #16: xor(s2,255) ;toggle waveform
34003 // @008 #17: jump(drive_wave)
// #18: ;
@2b0 // #19: address(688)
// @2b0 #20: [int_routine]
19a01 // @2b0 #20: add(interrupt_counter,1) ;increment counter
2da04 // @2b1 #21: output(interrupt_counter,counter_port)
38001 // @2b2 #22: returni(enable)
// #23: ;
@3ff // #24: address(1023) ;set interrupt vector
342b0 // @3ff #25: jump(int_routine)