From: Lars Brinkhoff
What's the difference between PAL-11 and MACRO-11?
Without going through the manuals at length, basically MACRO-11 supports
macros, and PAL-11 doesn't. The syntax is otherwise very similar.
PALX is also the name for a cross assembler targeting
PDP-11.
I know it was used on ITS (although the PALX source had assembly options for
all the main PDP-10 OS's, except TOPS-10), was that where it was written, do
you happen to know? It's in MIDAS, so probably...
Noel