[chirp_devel] Yaesu FT70 support

I am keen to add support for the FT70. I have made a start based on the FT1.

So far

Read the radio Some of the memory and bank display correctly.

A few questions I would like to ask

_model = "AH51G"

_memsize = 65130 # But 65227 bytes read from dump

_block_lengths = [10,65227] # ???????????????? on FT1 memsize - 10

_block_size = 32

_mem_params = (900, # size of memories array

900, # size of flags array

) I want to understand the _memsize, _mem_params and _block_lengths any hints? Any suggestion on handling the checksums? Other radios that "might" be similar ? FT60? Other suggestions, references?

Thanks! I am keen to continue my work as it would be great to add the FT70

Nicolas