For the Reset pins , i think yea , cuz its just an RC Charging circuit , u've to let the the charging capacitor to discharge on the same button which connects the two uCs .
I think you should try both modes and pick the one you like best.
On the RESET question.
The 8051 has an active high reset which is designed to work with a capacitor to Vcc. Inside the chip is a pulldown resistor of approximately 8K ohms. If you connect two processor RESET pins together then those pulldown resistors will be in PARALLEL and they will change the timing of your RESET pulse. If you like living dangerously then by all means go ahead. If you prefer the more conservative approach then use a capacitor for each processor or better yet use a MA810LEUR RESET chip and connect the output to both processors.
For the reset pin, thanks guys, i was quite sure it wasn't good engineering to connect them directly, so, adding a capacitor for each uC will sove the RST issue, right?
now, for the data transmission, well i'm still not convinced to use the built-in serial Rx/Tx, i feel i'll have more control over the process if i program it myself..
thanks a lot for the document John, very interesting though!
For the reset pin, thanks guys, i was quite sure it wasn't good engineering to connect them directly, so, adding a capacitor for each uC will sove the RST issue, right?
now, for the data transmission, well i'm still not convinced to use the built-in serial Rx/Tx, i feel i'll have more control over the process if i program it myself..
thanks a lot for the document John, very interesting though!
I would start with the builtin hardware. Once you have investigated that mode of operation you will be in much better shape to do the software bit banging exercise.