i want to ask if i can simulate 2 8051 at the same time ,, as i have made communication system using 4 wires and i want to test it some may say use serial ,, but i already have a serial system working on another thing so can i simualte 2 8051 at the same time
For each of your 8051s, the other simply appears as a 4-wire interface - it is completely unaware that those 4 wires are actually connected to another 8051! Therefore, you will need to write a simulation of your 4-wire interface. If you have written your code carefully, with all the 8051-specifics isolated, it should be quite easy to take it and just "wrap" it into a PC app (or uVision DLL)...? There's a couple of app notes on writing simulation DLLs, or you might be able to do it with the Signal Functions in the uVision debugger - see the Manual