configurable path to toolchain
Use the proper way to refer to gcc's asm extension so we can compile this in C standard mode.
Merge pull request #19 from filcab/master

Use the proper way to refer to gcc's asm extension so we can compile this in C standard mode.
Clean up trailing whitespace
Merge pull request #6 from MatthiasLohr/feature/ConfigurableToolsPath

configurable path to toolchain
Merge pull request #1 from PaulStoffregen/master

resync
Fix USB MIDI at 72, 120, 144 & 168 MHz
When overclocking the CPU 133%, overclock flash by 40% too
Merge pull request #2 from PaulStoffregen/master

resync
Add DMA channel priority register definitions
Add support for 2, 4, 8, 16MHz (Duff)
Support F_CPU < 20 MHz with USB disabled
Reorganize clock startup sequence
Merge pull request #3 from PaulStoffregen/master

resync
fixes for  2, 4MHz
Merge pull request #22 from duff2013/master

fix for 2 and 4MHz
Fix (at least partially) 2 MHz mode
Merge pull request #4 from PaulStoffregen/master

resync
fix for delay of 1 micro sec @ 2MHz will be 0
SMC_PMPROT visible in all _F_CPU, remove stop mode