[noone_youknow]

Nice work! Looks like most of the basics are covered, and meanwhile in my current kernel the RISC-V entrypoint is >700 lines (of C) just to get to the arch-independent entrypoint!

I was just looking around for your input/output code, I don’t know zig but I expected to find putChar in kernel.zig based on the import in common.zig, but I don’t see it, should I be looking somewhere else? I didn’t see any simple command line processing either as mentioned in the README?

Mostly just looking around since your README mentioned VGA (and you seem to have a BIOS boot) which struck me as interesting on a RISC-V project, I was curious if you were actually using the SBI routines or had actually mapped in a VGA text mode buffer?

[WD-42]

There is a todo in the putchar stub. Looks like it’s not implemented yet.

I have it implemented here in my own roughly 1k line zig kernel: https://github.com/Fingel/aeros-v/blob/ddc6842291e9cf4876729...

[noone_youknow]

Thanks! I see that you’re using the SBI routines, which is what I was expecting here but couldn’t find - the reference to “output text to VGA” in the post made me curious.

I did see the putchar stub in the user.zig but, lacking understanding of zig, wasn’t sure how that could work given common.zig is looking for putChar in kernel.zig as far as I could tell.

I just jumped through a couple of hoops to get zig 0.13 installed and see an error about “root struct of file ‘kernel’ had no member named ‘putchar’” so I guess maybe it’s not implemented here at all.