RBF File Structure

For topics which do not fit in other specific forums.
RexMendicorvm
Posts: 15
Joined: Mon Oct 10, 2022 11:54 pm
Has thanked: 1 time
Been thanked: 1 time

RBF File Structure

Unread post by RexMendicorvm »

Is there a standard way the RBF files are structured? For example, is there something like a "header" that has the name of the core, how it relates to the folder structure, etc. that is uniform to cores, or does every developer do it their own way? If it is more or less standardized, is it possible to edit these values in some way (like in a hex editor)? Thanks!

FPGA64
Top Contributor
Posts: 887
Joined: Mon Mar 01, 2021 3:10 pm
Has thanked: 48 times
Been thanked: 372 times

Re: RBF File Structure

Unread post by FPGA64 »

The RBF is the compiled result from Quartus. Editing it in any way would be inadvisable. Changing the core name would require a recompile of the core.

User avatar
Newsdee
Top Contributor
Posts: 867
Joined: Mon May 25, 2020 1:07 am
Has thanked: 103 times
Been thanked: 239 times

Re: RBF File Structure

Unread post by Newsdee »

What do you want to do exactly? You can use MGL files to customize a core name and change default values without recompiling.

For example you can have an "Amiga 500" and "Amiga 1200" MGL files, both uaing rhe same exact RBF for Minimig, but starting with differemt options, and saving settings separately.

https://mister-devel.github.io/MkDocs_M ... anced/mgl/

To add to the above reply, tchnically RBFs are an FPGA bit stream optimized by Quartus, so there isn't a user editable file structure in it. MGL were developed as a way to avpjd having to recompile for basic setting changes (name etc)

cursedverses
Posts: 174
Joined: Sun May 24, 2020 9:13 pm
Has thanked: 180 times
Been thanked: 32 times

Re: RBF File Structure

Unread post by cursedverses »

Newsdee wrote: Wed Sep 20, 2023 8:32 pm

What do you want to do exactly? You can use MGL files to customize a core name and change default values without recompiling.

For example you can have an "Amiga 500" and "Amiga 1200" MGL files, both uaing rhe same exact RBF for Minimig, but starting with differemt options, and saving settings separately.

https://mister-devel.github.io/MkDocs_M ... anced/mgl/

To add to the above reply, tchnically RBFs are an FPGA bit stream optimized by Quartus, so there isn't a user editable file structure in it. MGL were developed as a way to avpjd having to recompile for basic setting changes (name etc)

I only discovered the MGL format yesterday (the first time I've wanted to separate Amiga 500/600/1200/Vision installs and it is awesome. I do wish I could hide the RBF now I have the MGLs named as I want them...

Flandango
Core Developer
Posts: 451
Joined: Wed May 26, 2021 9:35 pm
Has thanked: 55 times
Been thanked: 383 times

Re: RBF File Structure

Unread post by Flandango »

cursedverses wrote: Thu Sep 21, 2023 3:11 pm

I do wish I could hide the RBF now I have the MGLs named as I want them...

I know it's off topic...but....
If you are talking about hiding the Minimig core itself, you can try using the names.txt file to hide it.
In the names.txt file, change or add the following line to "hide" the minimig (Amiga) core but leave your mgl's visibile:

Code: Select all

Minimig: 

I haven't noticed any adverse side effects.

rhester72
Top Contributor
Posts: 1295
Joined: Thu Jun 11, 2020 2:31 am
Has thanked: 15 times
Been thanked: 199 times

Re: RBF File Structure

Unread post by rhester72 »

@Flandango Neat tip, thanks!

Post Reply