Boot | C31 | TMS320VC33 | VC33

Hi,
My flash is 8 bit.I want to write my boot code into flash.I believe 
if I write an instruction in Code Composer it is by default in 32
bits(e.g,LDI,STI etc).How to convert the instructions to 8 bit.I am using
assemblylanguage. somebody has raised a similar question for data to which it
was answered use AND3 and RPTS.But will this work for instructions?
Asha

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Asha,

Your compiler distribution should come with a command line tool called
"hex30.exe".  This tool converts the byte codes into a form usable by
the on-chip bootloader.

The documentation is in Chapter 10 of SPRU035.

Regards,
Bill 
> -----Original Message-----
> From: c...@yahoogroups.com [mailto:c...@yahoogroups.com] On 
> Behalf Of p...@yahoo.co.in
> Sent: Monday, July 28, 2008 6:26 AM
> To: c...@yahoogroups.com
> Subject: [c3x] writing to 8 bit flash
> 
> Hi,
> My flash is 8 bit.I want to write my boot code into flash.I believe 
> if I write an instruction in Code Composer it is by default 
> in 32 bits(e.g,LDI,STI etc).How to convert the instructions 
> to 8 bit.I am using assemblylanguage. somebody has raised a 
> similar question for data to which it was answered use AND3 
> and RPTS.But will this work for instructions?
> Asha
> 

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> My flash is 8 bit.I want to write my boot code into flash.I believe 
> if I write an instruction in Code Composer it is by default in 32
bits(e.g,LDI,STI etc).How to convert the instructions to 8 bit.I am using
assemblylanguage. somebody has raised a similar question for data to which it
was answered use AND3 and RPTS.But will this work for instructions?

The linker command must be told the memory is 8 bit, then it will insert 
the correct information in the first byte of the memory image to tell 
the loader the flash is 8 bit.

Here is an example file that I have used:

/*-------------------------------------*/
/*  command file to make a boot eprom  */
/*-------------------------------------*/
k3master.out	/* input file from linker */
-map k3master.mxp	/* map filename */
-i		/* intel format */
-o k3master.hex	/* output filename */
-memwidth 8	/* physical width of memory system */
-bootorg 400000h	/* base address of boot memory */
-cg 10FAh	/* configure bus for max wait states */
-e 0080484fh	/* execution address */

ROMS
{
   FLASH: org=400000h, romwidth=8
}
-boot

org, -cg and various filenames must be changed to match your requirements.

Details are in the C31X software manuals.

Lyle

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Hello, I am trying to do something similar with the TMS320VC33.

I am trying to serial bootload my program, with matlab.

Once I have my program in intel hex format do I just send those words as is?  
The boot-loader source does not seem to take into account the hex format.  Do I
have to write a program to re-form this into the correct format?  what about
words that aren't 32 bits long yet I have to send 32 bits over the serial port
by default?  ( gonna repost as my own question too ).

Thanks,

Daniel
Hi,
>My flash is 8 bit.I want to write my boot code into flash.I believe 
>if I write an instruction in Code Composer it is by default in 32
bits(e.g,LDI,STI etc).How to convert the instructions to 8 bit.I am using
assemblylanguage. somebody has raised a similar question for data to which it
was answered use AND3 and RPTS.But will this work for instructions?
>Asha
>

_____________________________________

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