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+README
+======
+
+This README file discusses the port of NuttX to the MT-DB-X3 development
+board from MattairTech.  This board may host a variety of 64-pin AVR XMega
+part.  This port was specifically performed using the ATXmega384c3.
+
+See the MattairTech website for further information about the MT-DB-X3:
+http://www.mattairtech.com/.
+
+Contents
+========
+
+  - PIO Usage
+  - LEDs and Buttons
+  - Serial Console
+  - Configurations
+
+PIO Usage
+=========
+
+PA0  CONN_P_10 pin 1, Aref via J34
+PA1  CONN_P_10 pin 2
+PA2  CONN_P_10 pin 3
+PA3  CONN_P_10 pin 4
+PA4  CONN_P_10 pin 5
+PA5  CONN_P_10 pin 6
+PA6  CONN_P_10 pin 7
+PA7  CONN_P_10 pin 8
+
+PB0  CONN_P_10 pin 9, Aref via J25
+PB1  CONN_P_10 pin 10
+PB2  C4_LS CONN_P14 pin 5
+PB3  C4_LS CONN_P14 pin 5
+PB4  C4_LS CONN_P14 pin 5, Alt JTAG TMS
+PB5  C4_LS CONN_P14 pin 5, Alt JTAG TDI
+PB6  C4_LS CONN_P14 pin 5, Alt JTAG TCK
+PB7  C4_LS CONN_P14 pin 5, Alt JTAG TDO, Voltage measurement via J15
+
+PC0  C0_LS CONN_P14 pin 7
+PC1  C1_LS CONN_P14 pin 8
+PC2  C2_LS CONN_P14 pin 9
+PC3  C3_LS CONN_P14 pin 10
+PC4  C4_LS CONN_P14 pin 5, PDI/SPI Header pin 5 via J8
+PC5  C5_LS CONN_P14 pin 6, PDI/SPI Header pin 4 via J8
+PC6  C6_LS CONN_P14 pin 7, PDI/SPI Header pin 1 via J13
+PC7  C7_LS CONN_P14 pin 8, PDI/SPI Header pin 3 via J12
+
+PD0  CONN_P14 pin 9
+PD1  CONN_P14 pin 10
+PD2  CONN_P14 pin 11
+PD3  CONN_P14 pin 12
+PD4  CONN_P14 pin 13
+PD5  CONN_P14 pin 14, TXB0103 Output Enable
+PD6  CONN_P14 pin 12, USB D-
+PD7  CONN_P14 pin 13, USB D+
+
+PE0  CONN_P10 pin 1
+PE1  CONN_P10 pin 2
+PE2  CONN_P10 pin 3
+PE3  CONN_P10 pin 4
+PE4  CONN_P10 pin 5
+PE5  CONN_P10 pin 6
+PE6  CONN_P10 pin 7, TOSC1 via J28
+PE7  CONN_P10 pin 8, TOSC1 via J29
+
+PF0  PORT F pin 1
+PF1  PORT F pin 2
+PF2  PORT F pin 3
+PF3  PORT F pin 4
+PF4  PORT F pin 5, Bootloader jumper
+PF5  PORT F pin 6
+PF6  PORT F pin 7, Green LED via J31
+PF7  PORT F pin 8, User button via J33 (otherwise reset)
+
+LEDs and Buttons
+================
+
+Serial Console
+==============
+
+Configurations
+==============
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