Re: Compiling ram_init file for m68k-coff-gdb

["Benjamin F. Kuo" <kuo@paracel.com>]

Melvin is correct--the information you need is the setup for:
- SIM base address, sometimes referred to as MBAR
- Stack pointer (where your RAM is located)
- SFC, DFC
- Register initialization
- Chip selects, if you're using them

If you have a debug board from Motorola or another vendor, this stuff
should be documented.  If this is your own design, somebody should know how
it's all connected.

This code is used by any BDM type debugger to initialize the system before
loading code--to make RAM available, usually. For code running from ROM
it's the first that that must be done on a power on reset.

Benjamin Kuo



>> it needs a
>> ram_init file, and we can't find ANY documentation on how to create such
>> a file and what it should contain. All we know is, that it contains
>> setup information for some internal (and vital!) registers in the CPU.
>> We have tried digging round a little in the EFI332 project, but all the
>> files there seem to be very focused on setting up this complex fuel
>> injection system, which we don't need.
>