* This device spoofs Atmel's official AVRISP-MKII device PID so that it remains compatible with Atmel's AVRISP-MKII\r
* drivers. When prompted, direct your OS to install Atmel's AVRISP-MKII drivers provided with AVRStudio.\r
*\r
- * Note that this design currently has several limitations:\r
+ * Note that this design currently has the following limitations:\r
* - Minimum ISP target clock speed of 500KHz due to hardware SPI module prescaler limitations\r
* - No reversed/shorted target connector detection and notification\r
*\r
* without an ADC converter, VTARGET will report a fixed 5V level at all times.\r
*\r
* When compiled for the XPLAIN board target, this will automatically configure itself for the correct connections to the\r
- * XPLAIN's XMEGA AVR, and will enable PDI/TPI only programming support (since ISP mode is not needed).\r
+ * XPLAIN's XMEGA AVR, and will enable PDI/TPI only programming support (since ISP mode is not needed). Note that the\r
+ * first revision XPLAIN board lacks a bootloader on the AT90USB1287, and thus for this firmware to be loaded, an external\r
+ * programmer will be required.\r
*\r
* While this application can be compiled for USB AVRs with as little as 8KB of FLASH, for full functionality 16KB or more\r
* of FLASH is required. On 8KB devices, ISP or PDI/TPI programming support can be disabled to reduce program size.\r