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Zenithus



Joined: 16 Dec 2004
Posts: 3
Location: Washington, UK
Zenithus
Just making a little announcement about this project really at the minute...

It aims to be easy-to-read by all, and is written completely in FASM-syntax ASM. I have a little website and message board up at http://ezos.zenco.net/ with sourcecode and binaries available. Just wondered what everyone thought.

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Zenithus
EZOS Main Developer
http://ezos.zenco.net/
Post 03 Jan 2006, 13:28
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Dex4u



Joined: 08 Feb 2005
Posts: 1601
Location: web
Dex4u
I have looked at your site, i really like your logo Cool, the only problem i found, was that it was not till i read some of your source code, that i new it was a realmode OS.

But still nice start and keep up the good work
Post 03 Jan 2006, 17:43
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tom tobias



Joined: 09 Sep 2003
Posts: 1320
Location: usa
tom tobias
Zenithus wrote:
...It aims to be easy-to-read by all,....
Good start, and GREAT philosophy.
Look forward to two modest improvements, eventually:
(a) hard drive access instead of, or in addition to, option to use obsolete floppy,
(b) 100% protected mode.
Congratulations on starting the new year with a very positive contribution.
Smile
Post 04 Jan 2006, 09:59
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Zenithus



Joined: 16 Dec 2004
Posts: 3
Location: Washington, UK
Zenithus
Thanks very much guys. On your comments:

I'm hoping for hard drive support soon as well, and I will be making an effort to code it in.
I'll split a protected mode branch off eventually, but I want to try and get this working in 16-bit too incase anyone has very old PCs e.g. 286s etc and need a decent OS to run on them.

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Zenithus
EZOS Main Developer
http://ezos.zenco.net/
Post 05 Jan 2006, 10:41
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bogdanontanu



Joined: 07 Jan 2004
Posts: 403
Location: Sol. Earth. Europe. Romania. Bucuresti
bogdanontanu
You can setup protected mode on 286 CPU also Very Happy
It is only much harder to return to real mode on a 286 (but possible)

The only CPU that does not have a protected mode is a 8086/8088
Post 05 Jan 2006, 18:09
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DC740



Joined: 01 Oct 2004
Posts: 74
Location: Argentina
DC740
great, I'll read the source (i'm getting interest about how the OSes work)....

one question a little bit off topic... I thought that you couldn't return to real mode in the 286s... can you post some link that explains how to do it (i started reading about this yesterday, thats why i don't have idea)
Post 05 Jan 2006, 18:23
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DC740



Joined: 01 Oct 2004
Posts: 74
Location: Argentina
DC740
nevermind, i found what i was looking for, thanx anyway



entering and exiting protected mode in 286s
http://www.x86.org/articles/pmbasics/tspec_a1_doc.htm
Post 05 Jan 2006, 20:15
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Dex4u



Joined: 08 Feb 2005
Posts: 1601
Location: web
Dex4u
There are many advantages to a small realmode OS, including being able to load from USB key-fobs and using USB keyboards, if the BIOS supports it.
Also later you can boot to your realmode OS and from there go to pmode, like MenuetOS does.
Post 05 Jan 2006, 23:50
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