Update README.md

Author: AKuHAK

README.md

@@ -1,3 +1,105 @@
 # PS2Client
 
-![CI](https://github.com/ps2dev/ps2client/workflows/CI/badge.svg)
+![CI](https://github.com/ps2dev/ps2client/workflows/CI/badge.svg)
+
+
+## PS2CLIENT USAGE AND INFORMATION
+
+### THE INTRODUCTION
+
+These programs, ps2client & fsclient, are command line tools used for interacting with a ps2 system running ps2link and/or ps2netfs. It will allow you to send various commands as well as respond to requests for data. This program was written and tested under Linux, Cygwin and Mac OS X but should compile on any reasonably unixlike system.
+
+### BUILDING THE CLIENTS
+Building and installing is very simple:
+
+`make clean; make install`
+
+There are some build options, however:
+
+`PREFIX=/dir`
+
+Install directory, defaults to: `$PS2DEV`. `/bin` will be automatically appended.
+The software will be installed to the `/bin` sub-directory, under `PREFIX` (`PREFIX/bin`).
+
+These options can be used as follows:
+
+`make clean; make PREFIX=/new/path/prefix install`
+
+### BUILDING WINDOWS BINARIES
+For building windows binaries on Unix system, you need to setup mingw cross-compiler and win32 threads.
+Build command:
+
+`make -f Makefile.mingw32`
+
+### BASIC CLIENT USAGE
+Basic usage:
+
+```
+ps2client [-h hostname] [-t timeout] <command> [arguments]
+fsclient [-h hostname] <command> <arguments>
+```
+
+**[-h hostname]**
+
+The address of the remote ps2. This can be an IP or a hostname. If none is given, the environment variable `$PS2HOSTNAME` will be checked for a valid address. If this variable isn't set, a default of 192.168.0.10 will be used.
+
+**[-t timeout]**
+
+An idle timeout period in seconds that the client will wait before exiting. This is useful to allow a script to continue after calling ps2client to send a command to ps2link or ps2netfs.
+
+### PS2LINK COMMANDS
+- `reset`
+
+Send a reset request to ps2link.
+
+- `execiop <filename> [arguments]`
+
+Tell ps2link to load and execute a file on the IOP.
+
+- `execee <filename> [arguments]`
+
+Tell ps2link to load and execute a file on the EE.
+
+- `poweroff`
+
+Send a poweroff request to ps2link.
+
+- `scrdump`
+
+Tell ps2link to dump exceptions to the screen.
+
+- `netdump`
+
+Tell ps2link to dump execetions to the network console.
+
+- `dumpmem <offset> <size> <filename>`
+
+Dump the contents of memory into a file.
+
+- `startvu <vu>`
+
+Tell the specified vector unit to start operation.
+
+- `stopvu <vu>`
+
+Tell the specified vector unit to stop operation.
+
+- `dumpreg <type> <filename>`
+
+Dump the registers of a given type into a file.
+
+- `gsexec <size> <filename>`
+
+Tell ps2link to load and send a file to the GS.
+
+- `writemem <offset> <size> <filename>`
+
+Write the contents of a file into memory.
+
+- `iopexcep`
+
+I really don't know! OH NOES!!
+
+- `listen`
+
+Listen to the ps2link network console.