VisualDSP++ 4.5 Loader and Utilities Manual - Analog Devices

ADSP-2126x/2136x/2137x Processor Booting
INIT_L48 Blocks
The INIT_L48 block has one packing and one padding requirements. First,
there must be an even number of 48-bit words in the block. If there is an
odd number of instructions, then the loader utility must append one additional
48-bit instruction that is all zeros. In all cases, the count placed into
the header is the original logical number of words. That is, the count does
not include the padded word. Once the number of words in the block is
even, the data in this block is packed according to Table 5-13. The table
also shows the case where one zero-word must be added.
Table 5-13. INIT_L48 Block Packing and Zero-Padding (ASCII Format)
Original Data Packed into an Even
Number of 32-bit Words
-hostwidth
32 16 8
111122223333 22223333 22223333 3333 33
444455556666 66661111 55551111 2222 33
AAAABBBBCCCC 44445555 44445555 1111 22
BBBBCCCC BBBBCCCC 6666 22
0000AAAA 0000AAAA 5555 11
00000000 00000000 4444 11
CCCC 66
BBBB 66
AAAA 55
0000 55
0000 44
0000 44
5-26 VisualDSP++ 4.5 Loader and Utilities Manual
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