Helical milling with a diagonal repeat ?

Having read as much as I could find, and with lots of trial and error in AXIS, I've got an example of the g-code for a canned drilling cycle which I now understand and want to modify.
The modification is to change the simple plunge drilling to a helical milling motion, so that each hole is now larger than the diameter of the tool.

As an example, my canned repeat drilling code -

g17 g21 g40 g49 g54 g80 g90 g94(my standard header line)

g00 x[0] y[0] z[5]
g91 g81 g98 x12 y20 z-6 R1.8 L3
g90
g00 z[5]

and my helical milling code -

g17 g21 g40 g49 g54 g80 g90 g94(my standard header line)

#1=21.5
#2=15
#3=5 (safe height)
#9=250

g00 x[21.5] y[15] z[#3] (1st hole position)
g00 z[0]
O100 SUB
g91 (Switch to incremental mode)
(FIND START POSITION)
g01 z[-2] F#9(drop to 1st cutting level at centre of hole)
g01 y[2] F#9(cut outwards to hole diameter)
g02 y[-2] J-1 z[-2] F#9
g02 y[2] J1 F#9
g02 y[-2] J-1 z[-2] F#9
g02 y[2] J1 F#9
g02 y[-2] J-1 z[-2] F#9
g02 y[2] J1 F#9
g02 y[-2] J-1 z[-2] F#9
g02 y[2] J1 F#9
g02 y[-2] J-1 z[-2] F#9
g02 y[2] J1 F#9
g02 y[-2] J-1 F#9 (bottoming hole)
g02 y[2] J1 F#9
g01 y[-1] F#9(move to original centre position)
g01 z#3 F#9(up to safe height)
g90 (Return to absolute mode)
O100 ENDSUB

Could someone tell me by way of simple example, how to blend the two codes together, so that I have a file that I could then modify to suit.
Many thanks,
John (the old grumpy skinny one)

Thanks Andy, I'll check it out in my new Sim AXIS in front of the fire (see my other thread re AXIS )
I like your other coding touch - E&OE - must remember that one.
John

The helix is great, much simpler.
At the moment I can't get the "call" to perform, but I'll experiment after a bit more reading, so it's back to the user manual first.
John

andypugh wrote:

.........

1) Create a file in the normal G-code file location .........

Just read the "Calling files" in the user manual, and I now understand the significance of the above.
I'll try doing it properly this time...!
John

Now seem to have fallen down a black hole

I thought I had worked out what I'd done wrong, and tried various changes to naming and locating the spiral.ngc file.
However, nothing worked, so I thought I'd go back and start over.
Alas, I can't now get even the single spiral to run in Axis.

I load the file exactly as before -
O<spiral> SUB
#1=0
#2=0
#3=0 (topZ )
#4=-12 (bottom Z)
#5=6
#6=2
#7=250

G90.1 (absolute arc centres)
G0 X[#1 - #5] Y#2 Z[#3 + #6]
G1 Z#3 F#7
#10 = #3
O100 WHILE [#10 GT [#4 + #6]]
#10 = [#10 - #6]
G2 I#1 J#2 Z#10 F#7
O100 ENDWHILE
G2 I#1 J#2 Z#4 F#7
G2 I#1 J#2 Z#4 F#7

O<spiral> ENDSUB

M2

O<spiral> CALL [12] [20] [1.8] [-10] [6] [2]

but now it loads but nothing appears in the Axis window.
The code appears, but not the plot - "I've lost the plot"
John

Thanks Andy. I think I missed an edit somewhere.
Now back to the problem of getting the "call" to work.
John

That's a new one to me, Andy, and thanks.
I must be frank though. It looks like it will take all my liguistic skills to accurately extract the gold from the dross.
Why are so many pages of examples of coding written so poorly ?
The coding is probably perfect, but the language that surrounds it is appalling.

E of R
John