- * <td>Define to enable 6-PIN ATTINY TPI programming protocol support. <i>Ignored when compiled for the XPLAIN board.</i></td> \r
- * </tr>\r
- * <tr>\r
- * <td>PDI_VIA_HARDWARE_USART</td>\r
- * <td>Makefile CDEFS</td>\r
- * <td>Define to force the PDI protocol (when enabled) to use the much faster hardware USART instead of bit-banging to\r
- * match the official AVRISP pinout. This breaks pinout compatibility with the official AVRISP MKII (and requires \r
- * seperate ISP and PDI programming headers) but increases programming speed dramatically.\r
- * <i>Ignored when compiled for the XPLAIN board.</i></td> \r
- * </tr>\r
- * <tr>\r
- * <td>TPI_VIA_HARDWARE_USART</td>\r
- * <td>Makefile CDEFS</td>\r
- * <td>Define to force the TPI protocol (when enabled) to use the much faster hardware USART instead of bit-banging to\r