ld a,(HL)   ;switch (HL)
 cp 1        ;case (1)
 jr nz,+     ;branch to next colon (note: not all assemblers support this syntax)
    call HL_EQUALS_1
:
 cp 2        ;case (2)
 jr nz,+     ;branch to next colon
    call HL_EQUALS_2
:
 cp 50
 jr nz,+
    call HL_EQUALS_50
:
 ;rest of program