FAT32 quicktest
Add printf
looks like memory structure is padded in real64, to 256bit.
Dump symbol map when linking
Add additional information to exception dump
Add disassembly target
Add more info in exception handler
Add possibility to have keyboard handler called from ISR
display the value of RTC counter while spinning, avoid interrupts when printf it.
Revert "Add possibility to have keyboard handler called from ISR"

This reverts commit e0a5b93c0e9e28e5da6776dc4e70740814cc7c06.
add keyboard and timer interrupt handlers