undocumented CAT command + ROM/firmware

"Jacob" <[email protected]> Sun, 12 Jan 2014 00:00:52 -0000
Newsgroups gmane.recreation.radio.hardware.yaesu.vr-5000
Message-ID <[email protected]>
There's a n undocumented opcode in the CAT interface opcode "0xD7" which seems to be similar to 0xE7 (s-meter) opcode. Write [0x0 0x0 0x0 0x0 0xd7] and read one bytes back. 

I was wondering does anyone have a copy of the firmware ?, or can anymore read the ROM ?. I'd be very interessed in decompiling the code and to actually see which CAT commands are supported. 

Best regards

Jacob Heder
[email protected]