Erik said “That is bull... skipping the supervisor is ridiculous, you will get all kinds of problems. Besides a supervisor is ~$1 and FIFOs are much more.”
language again: 'supervisor' when applied to a '51 is a 'reset controller' (with watchdog in some cases).

Erik said “That is not correct, if you use a processor with hardware IIC such as the 668.” As I explained to russel, the project is much bigger than two 8051s, and I’ve already used hardware serials for other purposes, so what I said clearly in the original message, software I2C is demanding not hardware.
The hardware IIC is in addition to the UART, some Cygnal chips even have two UARTS PLUS IIC.

Your first post:
I was looking for a Parallel Async Communication Protocol for 8051
Then now:
I think you hasn’t read the message carefully, because it’s not that two USB 8051s are going to communicate in my project, but one 8051 communicate with computer.

... And you complain that we ask you to be clear and use the correct expressions


Erik