Module shifts 

All 7-bits and 8-bits shifts.

Constants

LS0

LS1

LS2

Locking-shift 2

LS3

Locking-shift 3

LS1R

Locking-shift 1R

LS2R

Locking-shift 2R

LS3R

Locking-shift 3R

SI

Shift in

SO

Shift out

SS2

Single shift 2

SS3

Single shift 3