Thanks Julius. $SConvert using F4 looks like what I need. It isn't working, but that is something for me to figure out. I might be mis-understanding the layout and the data.
Thanks!
Here is the data in ZZDUMP format.
ZZDUMP RECORD
0000: 45 44 49 44 11 00 66 4C 61 72 67 65 52 65 66 4D EDID..fLargeRefM
0010: 69 6E 53 69 7A 65 00 44 41 54 41 04 00 00 00 00 inSize.DATA.....
0020: 44 47 4D 53 54 26 00 00 00 00 00 00 00 64 0E 00 DGMST&.......d..
0030: 00 1E 68 2B 00 28 00 00 00 45 44 49 44 16 00 66 ..h+.(...EDID..f
0040: 42 72 69 62 65 53 70 65 65 63 68 63 72 61 66 74 BribeSpeechcraft
0050: 4D 75 6C 74 00 44 41 54 41 04 00 CD CC CC 3D 47 Mult.DATA..ÍÌÌ=G
0060: 4D 53 54 1C 00 00 00 00 00 00 00 63 0E 00 00 1E MST........c....
0070: 68 2B 00 28 00 00 00 45 44 49 44 0C h+.(...EDID.
I got $SConvert to work. The format is "DATA" 2 byte length actual data.
"DATA"_$C(4,0)_$C(205,204,204,61) means that the data length is 4 so I'm doing $SConvert($C(205,204,204,61),"F4") which is .10000000149011611938. I was slightly wrong about the length and data locations. I need both the $C(4) and the $c(0) at the beginning for the data length, and the $C(61)="=" at the end is part of the data.
I'm saving off the float/double and the original value in case I need it.
$lb($double(.10000000149011611938),"ÍÌÌ=")
Thanks again Julius. I wasn't finding this in the documentation.