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INSTITUTO TECNOLÓGICO DE MATEHUALA




                      TABLA CONJUNTO DE INSTRUCCIONES

Elaboró:                            Materia:   Lenguaje Ensamblador

Alma Rosa Medrano Licea             Docente: Ing. Martín Luis Ledezma Hernández

Gerardo González Barajas            Carrera:   Ingeniería en Sistemas Computacionales

Maribel Molina Herrera              Grupo:     Sexto Semestre

Paulina del Carmen Álvarez García   Unidad 2: Elementos del Lenguaje


  Matehuala, S.L.P.                                              Marzo 2011
UNIDAD 2. ELEMENTOS DEL LENGUAJE
    CONJUNTO DE INSTRUCCIONES
Nombre de la   Sintaxis de la Instrucción      Descripción del        Ejemplo de uso de la   Categoría de
 Instrucción                                 funcionamiento de            instrucción              la
                                                la instrucción                                Instrucción
  ADC          ADC destino, fuente          Lleva a cabo la         ADC BX, AX               Aritméticas
                                            suma de dos
                                            operándos y suma
                                            uno al resultado en
                                            caso de que la
                                            bandera CF esté
                                            activada, esto es, en
                                            caso de que exista
                                            acarreo.
  ADD          ADD destino, fuente          Suma los dos            ADD AX, BX               Aritméticas
                                            operandos y guarda
                                            el resultado en el
                                            operando destino.
  DEC          DEC destino                  Decrementar el          DEC AX                   Aritméticas
                                            operando.
                                            Esta operación resta
                                            1 al operando
                                            destino y almacena
                                            el nuevo valor en el
                                            mismo operando.

  DIV          DIV fuente                   El divisor puede ser    DIV AX                   Aritméticas
                                            un byte o palabra y
                                            es el operando que
                                            se le da a la
                                            instrucción.

                                            Si el divisor es de 8
                                            bits se toma como
                                            dividendo el registro
                                            de 16 bits AX y si el
                                            divisor es de 16 bits
                                            se tomara como
                                            dividendo el registro
                                            par DX:AX, tomando
                                            como palabra alta
                                            DX y como baja AX.

                                            Si el divisor fué un
                                            byte el cociente se
                                            almacena en el
                                            registro AL y el
                                            residuo en AH, si fué
                                            una palabra el
Tabla intrucciones ensamblador

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Tabla intrucciones ensamblador

  • 1. INSTITUTO TECNOLÓGICO DE MATEHUALA TABLA CONJUNTO DE INSTRUCCIONES Elaboró: Materia: Lenguaje Ensamblador Alma Rosa Medrano Licea Docente: Ing. Martín Luis Ledezma Hernández Gerardo González Barajas Carrera: Ingeniería en Sistemas Computacionales Maribel Molina Herrera Grupo: Sexto Semestre Paulina del Carmen Álvarez García Unidad 2: Elementos del Lenguaje Matehuala, S.L.P. Marzo 2011
  • 2. UNIDAD 2. ELEMENTOS DEL LENGUAJE CONJUNTO DE INSTRUCCIONES
  • 3. Nombre de la Sintaxis de la Instrucción Descripción del Ejemplo de uso de la Categoría de Instrucción funcionamiento de instrucción la la instrucción Instrucción ADC ADC destino, fuente Lleva a cabo la ADC BX, AX Aritméticas suma de dos operándos y suma uno al resultado en caso de que la bandera CF esté activada, esto es, en caso de que exista acarreo. ADD ADD destino, fuente Suma los dos ADD AX, BX Aritméticas operandos y guarda el resultado en el operando destino. DEC DEC destino Decrementar el DEC AX Aritméticas operando. Esta operación resta 1 al operando destino y almacena el nuevo valor en el mismo operando. DIV DIV fuente El divisor puede ser DIV AX Aritméticas un byte o palabra y es el operando que se le da a la instrucción. Si el divisor es de 8 bits se toma como dividendo el registro de 16 bits AX y si el divisor es de 16 bits se tomara como dividendo el registro par DX:AX, tomando como palabra alta DX y como baja AX. Si el divisor fué un byte el cociente se almacena en el registro AL y el residuo en AH, si fué una palabra el