OSDev.org

The Place to Start for Operating System Developers
It is currently Fri Mar 29, 2024 8:58 am

All times are UTC - 6 hours




Post new topic Reply to topic  [ 2 posts ] 
Author Message
 Post subject: tatOS & USB
PostPosted: Thu Dec 19, 2013 5:17 am 
Offline
Member
Member

Joined: Sat Mar 15, 2008 7:20 am
Posts: 42
Location: Wisconsin, USA
A new release of tatOS is available for scrutiny or amusement. tatOS now has a protected mode interface using sysenter / sysexit with an elementary paging scheme.

tatOS has always been advertised as an x86 hobby OS of no great significance but it does have its own text editor and assembler, and it has driver code for communication between the UHCI and EHCI usb controllers and your usb flash drive or usb mouse ... that works most of the time :) This version of the EHCI driver takes advantage of all 5 page pointers and unlimited retries for maximum data transfer and reliability.

tatOS is written in assembly using nasm and developed on a linux machine. It needs a bios to boot and is developed on real hardware. It boots from floppy on old hardware and boots from a flash drive on my netbook as well, but I have a very limited hardware collection to test.

TomT

http://code.google.com/p/tatos/


Top
 Profile  
 
 Post subject: Re: tatOS & USB
PostPosted: Mon Dec 23, 2013 11:06 am 
Offline
Member
Member

Joined: Wed Oct 01, 2008 1:55 pm
Posts: 3192
I'll study your source as I develop my own USB disc driver. Last I looked it was a lot more self-contained and easy to understand than the Linux counterpart. Even (or maybe because?) it is written in assembly instead of C with too many dependencies.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 2 posts ] 

All times are UTC - 6 hours


Who is online

Users browsing this forum: No registered users and 41 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group