A hUGEDriver pattern is a series of 64 rows in this format:

  Note     Instr    Effect
NNNNNNNN, IIIIEEEE, XXXXYYYY

where

N = Note code
I = Instrument code
E = Effect code
X = Effect param 1
Y = Effect param 2

A hUGEDriver table is a series of 16 rows in this format:

  Note     Instr    Effect
NNNNNNNN, IIIIEEEE, XXXXYYYY

where

N = Note code
I = Jump number
E = Effect code
X = Effect param 1
Y = Effect param 2

If the note code is greater than 71 then it's considered to be an empty note cell.

00 is an empty instrument cell.

000 is an empty effect cell.

Effect list

0 - Arpeggio
1 - Slide up
2 - Slide down
3 - Toneporta
4 - Vibrato
5 - Set master volume
6 - Call routine
7 - Note delay
8 - Set panning
9 - Set duty cycle
A - Volslide
B - Position jump
C - Set volume
D - Pattern break
E - Note cut
F - Set speed

Instrument formats

-=-=-Square-=-=-
1: Sweep NR10
2: Length NR11
3: Envelope NR12
4: Highmask (%xytttttt) where X is set if it is a trigger note
   (should always be 1) and Y is the length enabled flag
   and T is the table number

-=-=-Wave-=-=-
1: Length NR31
2: Sound level NR32
3: Waveform number associated with this instrument
4: Highmask as shown before

-=-=-Noise-=-=-
1: Envelope NR42
2: Highmask + Length combined; 1 bit for counter step, 1 bit for length enabled, followed by the length itself
3: Table