The following links provide useful background information for this microcontroller and using this controller board.
Data Sheets
AT89C51RD2 Data Sheet: Atmel - AT89C51RD2 Data Sheet
AT89C51RD2 Technical Library (Includes FAQ, Assembly Code Examples and more): Atmel AT89C51RD2 - Technical Library
DS1307 Real Time Clock Data Sheet: Dallas Semiconductor - DS1307 Data Sheet
Realtek RTL8019 Data Sheet: Realtek - RTL8019 Data Sheet
Realtek RTL8019 Drivers: Realtek - RTL8019 Drivers
24LCXXX EEPROM Series Data Sheets: 24LCXXX Series
Books
Programming: Programming and Customizing the 8051 Microcontroller
Programming: 8051 Microcontroller, The: Hardware, Software, and Interfacing, 2/E
Internet: Embedded Internet Design
Compilers and Programming Tools
SPJ Systems: 8051 C Compiler
Wickenhauser: ANSI C Compiler including TCP/IP Stack
Bascom: Basic 8051 Compiler
Useful Websites
Atmel: To Atmel website
Realtek: To Realtek website
Circuit Cellar Magazine: To Circuit Cellar Website
User Tips
If you have some useful tips or relevant information that would be helpful to other users, please send it to technical@futurlec.com