Embedded Systems Design, 2nd Edition

368 Embedded systems design

this was not possible and the software had to be linked to a valid

absolute address.

This was done by writing a small command file with

SECTIONS and GROUP commands to instruct the linker to locate

the software at a particular absolute address. The files for the

MC68020 EVM and for the VMEbus board are shown. This file is

included with the other modules on the command line.

SECTIONS

{

GROUP 0x10000:

{

.text :{}

.data :{}

.bss :{}

}

}

The VMEbus board linker command file

To download the files, the resulting executable files were

converted to S-records and downloaded via a serial port to the

respective target boards. Using the debugger, ...