It remains uncertain whether the two versions of the player 
are intended for the same hardware.

Kyles player is arguably the simpler.  (The compiler also 
lacks a patch to generate leader/trailer and correct 
checksums, so perhaps Kyle's versions are earlier?)
In this version, amplituce information is output using
IOT 6551.  This is output again with IOT 6552 (with 
possibly a different DAMP value), and a duration and
tempo derived delay is done. Them IOT 6553 is issued
with AC clear, followed by a similar delay.  The outputs 
to 6552 and 6553 could be construed as an effort to 
output a sqaure wave of the desired frequency, and the
sequence is repeated for each note.

Player version 1.2 outputs, for each note, a frequency 
using IOT 6554, followed by a duration based delay.
Then, amplitude based information is output using 6551,
and the delay is continued for the rest of time specified 
by the duration and amplitude.  Finally, a 6552 is done 
with AC clear, and the player proceeds to the next note.

DAMP is a negative number (-1, -2, or -4), which is obtained
from a table at 0170, depending on the hight bit of the note.
(DAMP may also be zero, in the case of a rest.)

DAMP2 is similar to DAMP, but the values 6010 and 6070 
are used instead of -2 and -4.

6551 is used to control amplitude by both versions. 
Amplitude is derived from bits 1-2 of the note, shifted
to bits 3-4 in Kyle's version, and bits 5-6 in version 1.2.
Before output, the offset indicated by DAMP is added.

Both programs have a global tempo control and a duration
for each note.  The duration data is extracted from a table
at 0150.  The actual persistance of the note is for "tempo"
repititions of an ISZ loop controlled by the duration. 

	Vince