Subj : Re: Computer Broken
To   : apam
From : tenser
Date : Fri Sep 12 2025 11:03 am

On 10 Sep 2025 at 06:56p, apam pondered and said...
 
 ap> [snip]
 ap> I'm going away for a week tomorrow, going to investigate USB stack and
 ap> porting to x86_64 - both seem like pretty monumental tasks to me lol, so
 ap> which ever one looks the easiest I will have a crack at first.

Cool.  USB is hard; for x86_64, it depends: to enter 64-bit
long mode, you have to set up virtual memory paging and enable
the MMU; if you're already doing that for 32-bit, it's not so
bad: but if you're using x86-segmentation (which I think you
are?) it's a lot more challenging because a) most of x86
segmentation is ignored in long mode, and b) you have to switch
to paged virtual memory (with at least 4 level paging).

Personally, I'd rather set up a kernel for x86_64 than implement
USB, particularly if I have to do HID devices.

 ap>  te> Hey, that's all pretty cool!  Dunno about the VirtualBox stuff, but g
 ap>  te> luck and have fun playing around with it!
 ap> 
 ap> Thanks, I'm pretty happy with it.. I discovered some errors in it
 ap> earlier this year and it's been running so much better since I fixed
 ap> them, and I've been suprised at how well the networking has been going
 ap> (I had a webserver on it for weeks, and with all the portscanners and
 ap> such, it didn't crash at all)
 ap> 
 ap> Anyway, I will have fun, oh I used your pointer vectors in it too that
 ap> you contributed to magicka bbs - I hope that's ok..

Sure!  Have at it.

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