cpusong.py

CLOCK_PER_MILLIS = 218
TONE_TIME = 200
TONE_FREQS = {
        "c":261.63,
        "c2":523.25,
        "d":293.66, 
        "e":329.63, 
        "f":349.23, 
        "g":392, 
        "a":440, 
        "b":493.88,
        "c#":277,
        "d#":311,
        "f#":369,
        "g#":415,
        "a#":466,
        "a2": 880,
        "g#2": 830.61,
        "g2": 783.99,
        "f#2": 739.99,
        "f2": 698.46,
        "e2": 659.25,
        "d#2": 622.25,
        "d2": 587.33,
        "c#2": 554.37,
        "no": 50
        }

song = [
        ("a", 1.0),
        ("a", 1.0),
        ("a", 1.0),
        ("f", 3/4),
        ("c", 1/4),
        ("a", 1.0),
        ("f", 3/4),
        ("c", 1/4),
        ("a", 2.0),
        ("e2", 1),
        ("e2", 1),
        ("e2", 1),
        ("f2", 3/4),
        ("c", 1/4),
        ("g#", 1),
        ("f", 3/4),
        ("c", 1/4),
        ("a", 2),

        ("a2", 1),
        ("a", 3/4),
        ("a", 1/4),
        ("a2", 1),
        ("g#2", 3/4),
        ("g2", 1/4),
        ("f#2", 1/4),
        ("f2", 1/4),
        ("f#2", 1/2),
        ("no", 1/2),
        ("a#", 1/2),
        ("d#2", 1),
        ("d2", 3/4),
        ("c#2", 1/4),
        ("c2", 1/4),
        ("b", 1/4),
        ("c2", 1/2),
        ("no", 1/2),
        ("f", 1/2),
        ("g#", 1),
        ("f", 3/4),
        ("g#", 1/4),
        ("c2", 1),
        ("g#", 3/4),
        ("c2", 1/4),
        ("e2", 2),
    ]

addr = 0x6000

for note in song:
    freq = TONE_FREQS[note[0]]
    period = 1/freq * 1000
    
    cycles = round(period * CLOCK_PER_MILLIS)
    toneLength = round(TONE_TIME / period * note[1])

    print("    DC.W ${0:x}".format(cycles));
    print("    DC.W #${0:x}".format(toneLength));
    print("    DC.W #$1108")
    print("    DC.W #$2")

    #print("    MOVE.W #${0:x},${1:x}".format(cycles, addr));
    #addr += 2
    #print("    MOVE.W #${0:x},${1:x}".format(toneLength, addr));
    #addr += 2

    #print("    MOVE.W #$1108,${0:x}".format(addr))
    #addr += 2
    #print("    MOVE.W #$2,${0:x}".format(addr))
    #addr += 2

print("    DC.W #0");
#print("    MOVE.W #0,${0:x}".format(addr));

#print("    MOVE.B #228,D7")
#print("    TRAP #14")