View source for FNX6809 Overview

== FNX6809 for F256Jr & F256K ==

[[File:FNX6809_Transparent_SideView.png|thumb|FNX6809 CPU Module]]
[[File:FNX6809_Adapter.jpeg|thumb|FNX6809 FPGA Flash Adapter]]

The FNX6809 is a 40 pin dual inline package (DIP) module that is a cycle accurate implementation of the Motorola MC6809 CPU, working @ 3.3V and capable of running @ 6.29MHz on the F256Jr or the F256K.

The FNX6809 also differs from a real Motorola MC6809 CPU in that it has the 65C02 pin-out.

For these reasons, it is not designed (at least for now) to be a direct replacement for an MC6809.

An adapter is supplied with the FNX6809 module to be enable reflashing the on-board FPGA, if ever needed.

'''Note:''' 
* No software is written for the unit to support the processor at this time (but see [[OS-9]]). It is meant for those Mavericks who are ready to take it on without any safety nets. There is a version of Calypsi that supports now if anybody wants to use it.
* Keep in mind that you will need to upload a new load for the FPGA on the F256Jr or F256K to support it, so make sure you equip yourself with a USB Blaster.
* There is a nice web-based 6809 emulator [http://6809.uk you can try here.]



[[File:FNX6809_JTAG_Adapter_Position.jpg|thumb|left|FNX6809 JTAG Adapter Correct Orientation]]