Initial README.md content

Author: mesheets

README.md

@@ -1,2 +1,35 @@
-# PocketProgrammer
+# Pocket Programmer
 Program the RCX on the RCX using its own screen and buttons.
+
+**Original Website**: [Lego RCX Pocket Programmer](https://www.navina.ch/workshop/rcx/rcx.html)
+
+ 
+
+### The Yellow Lego RCX Brick
+```
++-------------------------+ 
+|View    1   2   3    Prgm| 
+|[__]  +-----------+  [__]| 
+|      | 00.PA   [ |	  | 
+|OnOff +-----------+  Run | 
+|[__]    A   B   C    [__]| 
++-------------------------+
+```
+
+The idea is based on "OnScreen" Copyright © 1999 by David R. van Wagner, and "LegOS 0.2.4" Copyright © 1998 by Markus L. Noga.
+
+However, the code (firmware) for the Lego "RCX Pocket Programmer" has been completely rewritten to provide much more and enhanced functionality.
+
+Unfortunately, unlike [OnScreenProgramming](https://github.com/BrickBot/OnScreenProgramming), the source code for this Pocket Programmer is not currently available, but available binaries are posted under Releases.
+
+## Features:
+* RCX Standalone/Pocket Programmer with 256 Program Steps
+* 22 Powerful RCX Commands (GOto, PAUSe, INput, OUput, LOop, ...)
+* 16 Registers (8-bit) for processing input/output data, etc.
+* 20 Register Operations (LDD/STD/IN/OUT..ADD/SUB/MUL/DIV..AND/OR..)
+* Conditional Branching (BEQ/BNE/BCC/BHI/BLO...)
+* Subroutines (JSR/RTS)
+* 256 Byte Memory Area (for User Variables/Data)
+* Single Step Execution Mode
+* VLL Communication (send VLL codes to MicroScout & CodePilot)
+* IR Communication (send/receive Messages & Remote Commands)