[This message was posted by Michael Wong of Chi-X Global Technology 
<[email protected]> to the "FAST Protocol" discussion forum at 
http://fixprotocol.org/discuss/46. You can reply to it on-line at 
http://fixprotocol.org/discuss/read/031d197b - PLEASE DO NOT REPLY BY MAIL.]

Hi All,

I am developing swx feed handler and I have an issue related to decode the FAST 
data from MDI.

msg:

0000005ah: 00 C6 76 C0 E4 53 57 58 47 52 4F 55 50 2D 4D 44 ;
0000006ah: 49 2E 4D 30 B1 4E 92 32 30 30 38 30 36 32 33 2D ; 
0000007ah: 30 33 3A 35 30 3A 32 33 2E 36 31 B1 81 43 48 30 ; 
0000008ah: 30 30 34 36 32 36 33 30 B2 81 7B C0 CA 80 80 41 ; 
0000009ah: 42 51 B5 80 80 80 80 81                         ;

I try to decode it manually. 

block size = 00 C6 
PMAP = 76 C0 (01110110 11000000)
TID = E4(100)
49 = 53 57 58 47 52 4F 55 50 2D 4D 44 49 2E 4D 30 B1 
34 = 4E 92 
33 = 32 30 30 38 30 36 32 33 2D 30 33 3A 35 30 3A 32 33 2E 36 31 B1

1021 = 81 
48 = 43 48 30 30 30 34 36 32 36 33 30 B2 
268 = 81 
7B C0 <--- ?
269 = CA ? 
270 = 80 
271 = 80 
336 = 41 42 51 B5 
346 = 80 
6566 = 80 
1023 = 80 
6567 = 80 
83 = 81

I found 7B C0 is appeared between tag 268 and 269. However, I don't know what 
it is about. Also I think there is something wrong with the PMAP. e.g the last 
tag 83, I think the PMAP should be set for this tag.

Thanks in advance
Michael

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