File simple.asm:
Inits the LFSR to a specific value, then runs the oscillator and stops it at a specific hard coded phase accu value and then samples and prints the output from the noise waveform.
Hold down space to repeat the process.

Printed value every time from real 8580 SIDs:
    7F

Actual printed value every time from emulator:
    VICE 2.4 r31587:   7F
    VICE 3.7.1 r44372: Random value


File scan.asm:
Same process as in simple.asm but repeats the process automatically and stores the output from the noise waveform to memory for every $1000th phase accu value for approx one half period.

Values in memory from real 8580 SIDs:
	$2000-$2061: $3F
	$2062-$2261: $7F
	$2262-$2561: $ff
	$2562-$2761: $fe
	$2762-$27ef: $fc

Actual values in memroy from emulator:
	VICE 2.4 r31587:   Same as from real SID above
	VICE 3.7.1 r44372: Random values

These routines has been tested on at least 10 real 8580 SID chips and the result on all of them are consistent with VICE 2.4 r31587 but not with later VICE including VICE 3.7.1 r44372.
