ORG 300h
main:
        LD HL, 0100h
        LD B, 20h
        LD C, 00h
        LD D, 00h

Controlla:
        LD A, (HL)
        AND 01h
        JP Z, Pari

Dispari:
        INC D
        JP Continua

Pari:
        INC C

Continua:
        INC HL
        DEC B
        JP NZ, Controlla
        LD A, C
        LD (0200h), A
        LD A, D
        LD (0201h), A

        HALT