Home » Getting Started » 134 & 265 SXB – Getting Started

134 & 265 SXB – Getting Started


Step 1

Plug in your XB via USB


The W65C265SXB is powered by 5V DC.  There are no on board regulators.  It is recommended to use a Micro USB cable powered from either your PC or a 5V wall adapter.   This will both power the board and provide a WDCTools development interface (when connected to a PC).  The XB has a built-in simple operating system called a Monitor. The Monitor is always there and is the built-in interface that is all you need to get started with the WDCTools and your first project.



All of the SXBs have built-in 32K bytes of SRAM for program and data storage and 128K bytes of FLASH memory organized as 32K byte blocks for easy switching between applications, tasks, or saving precious data. Unlike the Apple, Commodore, and Atari systems, no floppy or hard drive is needed. You are free to use the low power solid state memory in ways you only might have dreamed of before.

The FLASH can be written right in the socket or pre-programmed in a FLASH chip programmer. The memory contained in these small boards are equal to or greater than the memory of some of your favorite legacy systems that used the 6502 microprocessor.

-Micro USB Cable  and Micro USB OTG adapter M/F NOT included


Step 2


 Get Started with WDCTools and Terminal Interface

Get Started with WDCTools

  1. Download WDCTools  Install WDCTools and set update preferences with installer

  2. Download the WDC Programming Manual

      *Find  WDCTools Support videos on YouTube

The WDCTools is NOT for resale or reverse engineering of our technology in any form and is NOT provided for development of commercial products that use non–WDC 65xx processors in Core or Chip form.

The W65C134SXB and W65C265SXB both have a monitor ROM that on reset will communicate to a terminal using a UART on the W65C134S/W65C265SXB.  You can use programs such as HyperTerm (PC), HyperSerialPort (PC), PuTTY (MAC, Linux, PC), ZTERM (MAC), XTERM (MAC, Linux) to communicate with the boards. Or if its a more mobile interface you seek, with any Android device you can use the FTDI UART Terminal!

But what if you wanted to customize your interface to your SXB?  We thought it would be interesting to have a simple script to interface with the board.  Why not Python?  Python is straight forward and easy to use.  Check out the WDC GitHub Page for a starter script that will work with the W65C265SXB.  Feel free to make it your own.  You can even add functions to the board and interact through the terminal (turn on/off lights, read sensors, etc).  Let us know what you come up with!

Step 3


 Browse to your WDCTools example project


There is a getting started demo project for each board. The demo folders are:
W65C134SXB = C:\WDC\W65C134SXB\Projects\W65C134S_Demo
W65C265SXB = C:\WDC\W65C265SXB\Projects\W65C265S_Demo

If you do not have these folders, you can download the project from WDC’s Github repository and place in the proper folder as shown above:

Coming Soon!

What’s Next:
You should be up and running with your board. Please see the W65C134SXB or W65C265XB product page for technical information, Datasheets and more.


If you were to have a problem with your SXB, WDC has loaded the production test program that will scan your board and you can determine if you have any problems with the default out-of-box experience. WDCTools demo and test setup YouTube video: