[chirp_users] Kenwood D74 MEM_FORMAT Oddity

Jacob Lewallen jlewalle at gmail.com
Fri Feb 9 12:06:02 PST 2024


Hello all,

I was reading over the Kenwood D74 code in
https://github.com/kk7ds/chirp/blob/master/chirp/drivers/thd74.py and
noticed something peculiar with the MEM_FORMAT specification.

Looking closely at the channel information starting at offset 0x4000, by my
math each of the channels takes up 40 bytes. This, combined with the 16
bytes of padding for each "group" places 6 channels in one 256 byte page,
preventing channels from spanning pages makes sense to me. Then, there are
210 groups/pages. This is where things get odd. 210 * 256 = 53760, plus the
offset of 0x4000 places the end of this region at 70144 (0x11200), which
overlaps with the "names" section that starts at offset 0x10000.

Am I missing something?

Thanks,
Jacob
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