Readme updated

README.md

@@ -1,2 +1,52 @@
-# mister-modemu
-Modem Emulator for Mister FPGA
+~~~
+ ______         __               ________ __ __     __
+|   __ \.-----.|  |_.----.-----.|  |  |  |__|  |--.|__|
+|      <|  -__||   _|   _|  _  ||  |  |  |  |    < |  |
+|___|__||_____||____|__| |_____||________|__|__|__||__|
+_______________________________________________________
+
+      ESP8266 AT Modem Emulator for ZX-Next core
+_______________________________________________________
+~~~~
+
+## What is
+
+This is a modem emulator to be instaled into a
+[Mister FPGA board](https://misterfpga.org).
+
+It allows ZX-Next, or any other core that can use a serial port and
+expect an ESP8266 WiFi module, to connect to internet, as in the
+real machine with the WiFi module.
+
+The modem emulator is a work in progress but has the basics and can
+be used with [NXTel](https://github.com/Threetwosevensixseven/NXtel)
+smoothly to connect with Next's Videotex sites.
+
+## Requisites
+
+- A Mister complete system, you can get one from [ManuFerHi](https://manuferhi.com/) for example.
+- Internet connection through mister's ethernet or USB WiFi link.
+- RetroWiki's [ZXNext_Mister](https://github.com/benitoss/ZXNext_Mister) core running.
+- SD Card or VHD boot file with the [basic system distro](https://www.specnext.com/latestdistro).
+
+## Recommended
+
+- Latest [NXTel release](https://github.com/Threetwosevensixseven/NXtel/releases).
+
+## Installation
+
+SSH as `root` user to your Mister an type or paste:
+
+~~~bash
+curl -kLs http://bit.ly/modemu-install | bash
+~~~
+
+That's all.
+
+## Usage
+
+- Navigate to Mister's system menu, pressing `ESC` at the core's menu.
+- Select `Scripts`, and `Yes` to continue.
+- Select the `RetroWiki_Modemu_Start` script. This script knows how to install, run and update this modem emulator.
+- Now you can load ZXNext's core and browse to `demos`.
+- Execute `NXTel` and connect to any service.