8 bit 1mhz clk input

[ghost]

is a esp8266 fast enough to read 8 inputs on a interrupt of a 1mhz clock?

[5chufti]

As your request is not in any way related to a malfunction of the arduino esp8266 core please close the issue per issue policy #3571.
Please inquire on some specialised ESP8266 board e.g.
http://www.esp8266.com

[devyte]

Probably not. I believe SoftwareSerial supports up to 115Kbps. I guess in theory you could read all gpio up to the vecinity of that speed (except maybe gpio16).
Prrevious comment is correct: this is not the right place to ask such questions. Closing per issue POLICY doc.