okay! so i've just done a new update which outlines a rather (vague) summary of the taper, there's another update to go out before that, which is nearly there: in the meantime i'm making good progress with the program that reads the ASCII PADS format, displays the tracks (so i can see quickly what's going on), and alters the tracks to create the taper.
attached is like the first version, it requires several adjustments (all of which will be done programmatically).
btw richard: as it's done programmatically this *could* actually use a *much* more accurate algorithm, and a lot more steps.
the steps have to be offset though. they *must* not all be on the same 45 degree line, because if they did then the inter-pair spacing would drop below 5mil, and when they got close to 5 mil separation the *intra*-pair spacing would drop below 5mil. so everything needs to be shuffled up in a cascade that relates (weirdly) to *half* of 45 degrees - 22.5
also it would appear that the horizontal tracks, i turned NE by 45 degrees a little bit too early (i did the tracks by eye) so i have to alter that...
it's klunky but it's getting there.
l.