| |
Markus L. Noga <noga@inrialpes.fr> wrote:
> A safe reset from multitasking would look like this:
> disable_interrupts();
> set_stack_to_on_chip_area(); // if ROM doesn't do this itself
> rom_reset();
The first instruction (at 03ae) places the stack in on-chip memory,
assuming RAME bit of SYSCR is at its initial value of 1.
Why not make rom_reset() disable interrupts, then do its thing? That would
be the safest thing to do.
-Kekoa
|
|
Message has 1 Reply:
Message is in Reply To:
 | | Re: loading s/w
|
| (...) Well, if rom_reset() gets invoked near the end of your time slice, ROM has no time to reset the OCIA IRQ vector before the next timer tick. I'm not certain about the order in which ROM sets up data areas and IRQ vectors. legOS freely allocates (...) (25 years ago, 20-Apr-99, to lugnet.robotics.rcx.legos)
|
11 Messages in This Thread:
 
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
This Message and its Replies on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
