VisualDSP++ ADSP-21369: Acessing External Memory

[Jens]

I saw a previous thread about this problem but i have some furthe
questions since i am experiencing some problem.

I am using the ADSP-21369 and want to define a global variable in th
external memory. I am using the Block Based Talkthrough program (C
provided with the VDSP++.

i am doing this in tt.h to define two varialbes in the section seg_sdram

section("seg_sdram") float tt;
section("seg_sdram") float rr;

in order for the compiler to acknowledge these sections i have adde
following lines to the LDF file (ADSP-21369.LDF)

MEMORY
{
//external
seg_sram { TYPE(DM RAM) START(0x00200000) END(0x0021FFFF) WIDTH(32)}
seg_sdram { TYPE(DM RAM) START(0x08000000) END(0x083FFFFF) WIDTH(32)}

this should define the memory adresses

and then i define

SECTIONS
{
//external
seg_sram
{
INPUT_SECTIONS( $OBJECTS(seg_sram))
} > seg_sram

seg_sdram
{
INPUT_SECTIONS( $OBJECTS(seg_sdram))
} > seg_sdram

so the sections should be known

but i still get an error

[Warning li2060] The following input section(s) that contain progra
code
and/or data have not been placed into the executable for processo
'p0'
as there are no relevant commands specified in the LDF:

my quesion is why isnt there any relavent commands specified when i hav
specified them?



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