Help in programming the Atmega1284 with maniacbug-mighty-1284p.

I don't see these problems when bootloading 1284's via Atmel AVR ISP MKii and sketch downloads with FTDI modules.

Can you try with this bootloader?

Bootload-sketch-connections.jpg806×910 104 KB

View2.JPG1200×653 337 KB

optiboot_atmega1284p.hex (1.47 KB)

boards.txt (2.68 KB)