Working on Bootloader Code... How do I get the start of the variable stack area?

Kye

Hey all,

I'm working on my SD3.0 FATEngine's bootloader code and I've managed to get the boot time down well below a second. Not sure exactly how fast it is... but it's instant to a human now.

Anyway, I've encounted a problem with BIN files that can't be fixed robustly unless I know the size of the BIN file in bytes from its BIN image.

Since BIN files are pretty much everything until the VAR space/area I just need to find the value in the BIN file that points to the start of the VAR space.

(The problem is that I need to zero everything after the BIN file's data. It's not true that all the bytes after a file's data in the sectors that make up a file are zeroed...)

Is there an any answer to this?

kuroneko

Kye wrote: »

Since BIN files are pretty much everything until the VAR space/area I just need to find the value in the BIN file that points to the start of the VAR space.

word[4]

Kye

Thanks!

Was reading http://www.cliff.biffle.org/software/propeller/binary-format.html. But it was confusing!

EDIT: It works great now!

Dr_Acula

I'm looking forward to using this. The bootloader code in the Kyedos I am using is a little out of date - and it seems like 5 seconds or more. Under a second is going to be great.

Keep up the good work!