ESP8266 Community Forum

I've been trying to find out more about the CPU thats in the ESP8266. Do you know whats been included in the CPU ie:

What options, as listed in "4.1Overview of Options" of the "Xtensa Instruction Set Architecture (ISA) (http://0x04.net/~mwk/doc/xtensa.pdf) Reference Manual (http://0x04.net/~mwk/doc/xtensa.pdf) " are included in the L106/106Micro that is in the ESP products?

I haven't seen this documented, but what works on many processors is writing a really simple assembler - just read a new instruction in hex in the console, print the current register state, execute it, and print the next register state. Then you can explore at least the instruction set options.