What is the difference between a drum map and a drum program? | NovationMusic.com

What is the difference between a drum map and a drum program?

A drum map consists of a group of 49 drum programs + a set of overall
effects for the entire drum map. A drum program corresponds to a key on
the musical keyboard - eg drum program 000 is the lowest C on the
keyboard. In drum map a, the drum program 000 is 909 kick 2. This is
shown on the display screen as:

"909 Kick 2
Drum a000"

When this display is shown, all the 49 drum programs in drum map "a"
can be played across the keyboard but the synthesiser controls will
only effect drum a000 - the 909 kick drum 2 on the low C of the
keyboard. eg, reducing the filter cut-off will only affect drum a000.
The only exception to this is the effects controls, which are global
across the entire drum, map and are stored in the 049 drum program.
With OS2 for the Nova II there are now 5 pre-programmed drum maps
a,b,c,d,and h. Drum maps e,f and g have been left initialised for user
drum maps.