1 ;; Originally from GBDK by Pascal Felber.
15 ;; Need to sign extend before going in.
64 ;; HL, DE (left, right irrelivent)
68 ;; 16-bit multiplication
75 ;; DE = less significant word of product
77 ;; Register used: AF,BC,DE,HL
84 ;; Optimise for the case when this side has 8 bits of data or
85 ;; less. This is often the case with support address calls.
92 ;; Taken from z88dk, which originally borrowed from the