Texas Instruments TMS370 manual Outputting a Coff File From PC Memory

Outputting a COFF File From PC Memory

3.8Outputting a COFF File From PC Memory Ð the Output COFF Command

Use the output COFF command to create a COFF object file from the PC memory. This command allows you to specify the block(s) of PC memory to be used to create the COFF file. Each block of the PC memory is made into one section in the COFF file, and you can specify the section address in the COFF file to use for the block.

Step 1: Identify the file for the COFF output.

COFF Object file:

The name can be any valid DOS file name.

Step 2: Identify the address range you want to output by specifying the ob- ject (COFF file) address range.

PC Memory base address: all

The default for this base address prompt, all, causes the valid ad- dress ranges defined for the current device type to be used as block(s) of PC memory. These blocks are used to create the COFF file.

For example, the valid address ranges for a TMS370C756 device are (1E00h±1FFFh) and (4000h±7FFFh). If you use the default for this prompt, the PC memory inside those two ranges is used to create two sections in the COFF file with section addresses 1E00h and 4000h, respectively.

If, however, you want to use blocks of PC memory other than the de- fault, enter a PC memory address instead of the default all, and then enter the size of the block at the prompt:

Size (in bytes) : 0000h

The PC memory block that you specify must be inside the PC memory address space. Otherwise, an error message is displayed when an out-of-bounds error is detected. Press any key to erase the error message and return to the prompt to re-enter the value.

Step 3: Specify the COFF object base address when using memory space other than the default.

COFF object base address:

The default for this prompt is the value given for the PC memory base address prompt. If you want to use a different address in COFF for the block, enter an address here.

After you answer this prompt, the programmer returns to Step 2 to ask for another PC memory base address. If you have specified all

the desired PC memory blocks, press to terminate the input ses- sion. If you need more PC memory blocks, continue repeating the address prompts until a maximum of five blocks of PC memory have been entered.

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