Bootloader Data Stream Structure
Table 2-3. General Structure Of Source Program Data Stream In 16-Bit Mode
Word Contents
1 10AA (KeyValue for memory width = 16bits)
2 Register initialization value or reserved for future use
3 Register initialization value or reserved for future use
4 Register initialization value or reserved for future use
5 Register initialization value or reserved for future use
6 Register initialization value or reserved for future use
7 Register initialization value or reserved for future use
8 Register initialization value or reserved for future use
9 Register initialization value or reserved for future use
10 Entry point PC[22:16]
11 Entry point PC[15:0]
12 Block size (number of words) of the first block of data to load. If the block size is 0, this indicates the end
of the source program. Otherwise another section follows.
13 Destination address of first block Addr[31:16]
14 Destination address of first block Addr[15:0]
15 First word of the first block in the source being loaded
... ...
... ...
. Last word of the first block of the source being loaded
. Block size of the 2nd block to load.
. Destination address of second block Addr[31:16]
. Destination address of second block Addr[15:0]
. First word of the second block in the source being loaded
. …
. Last word of the second block of the source being loaded
. Block size of the last block to load
. Destination address of last block Addr[31:16]
. Destination address of last block Addr[15:0]
. First word of the last block in the source being loaded
... ...
... ...
n Last word of the last block of the source being loaded
n+1 Block size of 0000h - indicates end of the source program
SPRU722C – November 2004 – Revised October 2006 Bootloader Features 25
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