Simulación de 8051

[Jfmp]

There is an error in the concept of the simulation model of 8051 when set to work with internal memory, pin EA to VCC and choice no external rom, the instruccion mov  a, @a+dptr generate high byte of address of ptogram memory to P2, it is a big mistake, in this case P2 must be a general pourpose port. NO REAL FUNCTION 

[maupz]

Hi,

Can you attach an screenshot of the error or schematic to check that the component is not behaving as expected? Is this an included component in Multisim Master Database? What is the Multisim Version you are using?

Thanks.

[Jfmp]

hi.

thanks for your answer.

Ok, certainly a model obtained from the libraries of multisim, this error is present in versions that I have evaluated: multisim pro 12, multisim pro 13 and multisim pro 14. A very simple test that I attach the circuit and runs debug step by step shows what I am mentioning.