Tests with 8051

#1 · April 9, 2024, 8:01 pm

Hi Arcachofo,

It's me, Diego! (created new account for this new forum).

I'm testing the 8051 MCU on SimulIDE 1.1.0 (last stable version), and it seems the time reference is not working properly.

If you use the circuit below, with a 11.0592 freq and a simple delay program, you will see that the blink frequency is faster than 1 second. I'm having other little problems with my bigger circuit, but I imagine they derive from this timing issue.

Note: As we have discussed before, all my sample programs worked well on previous versions.

Thanks!

P 8051_1

#2 · April 9, 2024, 8:05 pm

Hi! I have added a scope and the delay is approx. 760 ms instead of 1 s.

#3 · April 9, 2024, 8:06 pm

Hi Diego, glad to see you.

Can you share your circuit and code?

#4 · April 10, 2024, 12:26 am

Sure, just sent you a message with the circuit, asm and hex files.

Thanks!