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feat: première version de COS2000. Affichage d'un texte en 3D au démarrage.

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### GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc.
<https://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies of this
license document, but changing it is not allowed.
### Preamble
The GNU General Public License is a free, copyleft license for
software and other kinds of works.
The licenses for most software and other practical works are designed
to take away your freedom to share and change the works. By contrast,
the GNU General Public License is intended to guarantee your freedom
to share and change all versions of a program--to make sure it remains
free software for all its users. We, the Free Software Foundation, use
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also to any other work released this way by its authors. You can apply
it to your programs, too.
When we speak of free software, we are referring to freedom, not
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### TERMS AND CONDITIONS
#### 0. Definitions.
"This License" refers to version 3 of the GNU General Public License.
"Copyright" also means copyright-like laws that apply to other kinds
of works, such as semiconductor masks.
"The Program" refers to any copyrightable work licensed under this
License. Each licensee is addressed as "you". "Licensees" and
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To "modify" a work means to copy from or adapt all or part of the work
in a fashion requiring copyright permission, other than the making of
an exact copy. The resulting work is called a "modified version" of
the earlier work or a work "based on" the earlier work.
A "covered work" means either the unmodified Program or a work based
on the Program.
To "propagate" a work means to do anything with it that, without
permission, would make you directly or secondarily liable for
infringement under applicable copyright law, except executing it on a
computer or modifying a private copy. Propagation includes copying,
distribution (with or without modification), making available to the
public, and in some countries other activities as well.
To "convey" a work means any kind of propagation that enables other
parties to make or receive copies. Mere interaction with a user
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An interactive user interface displays "Appropriate Legal Notices" to
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work under this License, and how to view a copy of this License. If
the interface presents a list of user commands or options, such as a
menu, a prominent item in the list meets this criterion.
#### 1. Source Code.
The "source code" for a work means the preferred form of the work for
making modifications to it. "Object code" means any non-source form of
a work.
A "Standard Interface" means an interface that either is an official
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such as by intimate data communication or control flow between those
subprograms and other parts of the work.
The Corresponding Source need not include anything that users can
regenerate automatically from other parts of the Corresponding Source.
The Corresponding Source for a work in source code form is that same
work.
#### 2. Basic Permissions.
All rights granted under this License are granted for the term of
copyright on the Program, and are irrevocable provided the stated
conditions are met. This License explicitly affirms your unlimited
permission to run the unmodified Program. The output from running a
covered work is covered by this License only if the output, given its
content, constitutes a covered work. This License acknowledges your
rights of fair use or other equivalent, as provided by copyright law.
You may make, run and propagate covered works that you do not convey,
without conditions so long as your license otherwise remains in force.
You may convey covered works to others for the sole purpose of having
them make modifications exclusively for you, or provide you with
facilities for running those works, provided that you comply with the
terms of this License in conveying all material for which you do not
control copyright. Those thus making or running the covered works for
you must do so exclusively on your behalf, under your direction and
control, on terms that prohibit them from making any copies of your
copyrighted material outside their relationship with you.
Conveying under any other circumstances is permitted solely under the
conditions stated below. Sublicensing is not allowed; section 10 makes
it unnecessary.
#### 3. Protecting Users' Legal Rights From Anti-Circumvention Law.
No covered work shall be deemed part of an effective technological
measure under any applicable law fulfilling obligations under article
11 of the WIPO copyright treaty adopted on 20 December 1996, or
similar laws prohibiting or restricting circumvention of such
measures.
When you convey a covered work, you waive any legal power to forbid
circumvention of technological measures to the extent such
circumvention is effected by exercising rights under this License with
respect to the covered work, and you disclaim any intention to limit
operation or modification of the work as a means of enforcing, against
the work's users, your or third parties' legal rights to forbid
circumvention of technological measures.
#### 4. Conveying Verbatim Copies.
You may convey verbatim copies of the Program's source code as you
receive it, in any medium, provided that you conspicuously and
appropriately publish on each copy an appropriate copyright notice;
keep intact all notices stating that this License and any
non-permissive terms added in accord with section 7 apply to the code;
keep intact all notices of the absence of any warranty; and give all
recipients a copy of this License along with the Program.
You may charge any price or no price for each copy that you convey,
and you may offer support or warranty protection for a fee.
#### 5. Conveying Modified Source Versions.
You may convey a work based on the Program, or the modifications to
produce it from the Program, in the form of source code under the
terms of section 4, provided that you also meet all of these
conditions:
- a) The work must carry prominent notices stating that you modified
it, and giving a relevant date.
- b) The work must carry prominent notices stating that it is
released under this License and any conditions added under
section 7. This requirement modifies the requirement in section 4
to "keep intact all notices".
- c) You must license the entire work, as a whole, under this
License to anyone who comes into possession of a copy. This
License will therefore apply, along with any applicable section 7
additional terms, to the whole of the work, and all its parts,
regardless of how they are packaged. This License gives no
permission to license the work in any other way, but it does not
invalidate such permission if you have separately received it.
- d) If the work has interactive user interfaces, each must display
Appropriate Legal Notices; however, if the Program has interactive
interfaces that do not display Appropriate Legal Notices, your
work need not make them do so.
A compilation of a covered work with other separate and independent
works, which are not by their nature extensions of the covered work,
and which are not combined with it such as to form a larger program,
in or on a volume of a storage or distribution medium, is called an
"aggregate" if the compilation and its resulting copyright are not
used to limit the access or legal rights of the compilation's users
beyond what the individual works permit. Inclusion of a covered work
in an aggregate does not cause this License to apply to the other
parts of the aggregate.
#### 6. Conveying Non-Source Forms.
You may convey a covered work in object code form under the terms of
sections 4 and 5, provided that you also convey the machine-readable
Corresponding Source under the terms of this License, in one of these
ways:
- a) Convey the object code in, or embodied in, a physical product
(including a physical distribution medium), accompanied by the
Corresponding Source fixed on a durable physical medium
customarily used for software interchange.
- b) Convey the object code in, or embodied in, a physical product
(including a physical distribution medium), accompanied by a
written offer, valid for at least three years and valid for as
long as you offer spare parts or customer support for that product
model, to give anyone who possesses the object code either (1) a
copy of the Corresponding Source for all the software in the
product that is covered by this License, on a durable physical
medium customarily used for software interchange, for a price no
more than your reasonable cost of physically performing this
conveying of source, or (2) access to copy the Corresponding
Source from a network server at no charge.
- c) Convey individual copies of the object code with a copy of the
written offer to provide the Corresponding Source. This
alternative is allowed only occasionally and noncommercially, and
only if you received the object code with such an offer, in accord
with subsection 6b.
- d) Convey the object code by offering access from a designated
place (gratis or for a charge), and offer equivalent access to the
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further charge. You need not require recipients to copy the
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may be on a different server (operated by you or a third party)
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If you convey an object code work under this section in, or with, or
specifically for use in, a User Product, and the conveying occurs as
part of a transaction in which the right of possession and use of the
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Corresponding Source conveyed, and Installation Information provided,
in accord with this section must be in a format that is publicly
documented (and with an implementation available to the public in
source code form), and must require no special password or key for
unpacking, reading or copying.
#### 7. Additional Terms.
"Additional permissions" are terms that supplement the terms of this
License by making exceptions from one or more of its conditions.
Additional permissions that are applicable to the entire Program shall
be treated as though they were included in this License, to the extent
that they are valid under applicable law. If additional permissions
apply only to part of the Program, that part may be used separately
under those permissions, but the entire Program remains governed by
this License without regard to the additional permissions.
When you convey a copy of a covered work, you may at your option
remove any additional permissions from that copy, or from any part of
it. (Additional permissions may be written to require their own
removal in certain cases when you modify the work.) You may place
additional permissions on material, added by you to a covered work,
for which you have or can give appropriate copyright permission.
Notwithstanding any other provision of this License, for material you
add to a covered work, you may (if authorized by the copyright holders
of that material) supplement the terms of this License with terms:
- a) Disclaiming warranty or limiting liability differently from the
terms of sections 15 and 16 of this License; or
- b) Requiring preservation of specified reasonable legal notices or
author attributions in that material or in the Appropriate Legal
Notices displayed by works containing it; or
- c) Prohibiting misrepresentation of the origin of that material,
or requiring that modified versions of such material be marked in
reasonable ways as different from the original version; or
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or authors of the material; or
- e) Declining to grant rights under trademark law for use of some
trade names, trademarks, or service marks; or
- f) Requiring indemnification of licensors and authors of that
material by anyone who conveys the material (or modified versions
of it) with contractual assumptions of liability to the recipient,
for any liability that these contractual assumptions directly
impose on those licensors and authors.
All other non-permissive additional terms are considered "further
restrictions" within the meaning of section 10. If the Program as you
received it, or any part of it, contains a notice stating that it is
governed by this License along with a term that is a further
restriction, you may remove that term. If a license document contains
a further restriction but permits relicensing or conveying under this
License, you may add to a covered work material governed by the terms
of that license document, provided that the further restriction does
not survive such relicensing or conveying.
If you add terms to a covered work in accord with this section, you
must place, in the relevant source files, a statement of the
additional terms that apply to those files, or a notice indicating
where to find the applicable terms.
Additional terms, permissive or non-permissive, may be stated in the
form of a separately written license, or stated as exceptions; the
above requirements apply either way.
#### 8. Termination.
You may not propagate or modify a covered work except as expressly
provided under this License. Any attempt otherwise to propagate or
modify it is void, and will automatically terminate your rights under
this License (including any patent licenses granted under the third
paragraph of section 11).
However, if you cease all violation of this License, then your license
from a particular copyright holder is reinstated (a) provisionally,
unless and until the copyright holder explicitly and finally
terminates your license, and (b) permanently, if the copyright holder
fails to notify you of the violation by some reasonable means prior to
60 days after the cessation.
Moreover, your license from a particular copyright holder is
reinstated permanently if the copyright holder notifies you of the
violation by some reasonable means, this is the first time you have
received notice of violation of this License (for any work) from that
copyright holder, and you cure the violation prior to 30 days after
your receipt of the notice.
Termination of your rights under this section does not terminate the
licenses of parties who have received copies or rights from you under
this License. If your rights have been terminated and not permanently
reinstated, you do not qualify to receive new licenses for the same
material under section 10.
#### 9. Acceptance Not Required for Having Copies.
You are not required to accept this License in order to receive or run
a copy of the Program. Ancillary propagation of a covered work
occurring solely as a consequence of using peer-to-peer transmission
to receive a copy likewise does not require acceptance. However,
nothing other than this License grants you permission to propagate or
modify any covered work. These actions infringe copyright if you do
not accept this License. Therefore, by modifying or propagating a
covered work, you indicate your acceptance of this License to do so.
#### 10. Automatic Licensing of Downstream Recipients.
Each time you convey a covered work, the recipient automatically
receives a license from the original licensors, to run, modify and
propagate that work, subject to this License. You are not responsible
for enforcing compliance by third parties with this License.
An "entity transaction" is a transaction transferring control of an
organization, or substantially all assets of one, or subdividing an
organization, or merging organizations. If propagation of a covered
work results from an entity transaction, each party to that
transaction who receives a copy of the work also receives whatever
licenses to the work the party's predecessor in interest had or could
give under the previous paragraph, plus a right to possession of the
Corresponding Source of the work from the predecessor in interest, if
the predecessor has it or can get it with reasonable efforts.
You may not impose any further restrictions on the exercise of the
rights granted or affirmed under this License. For example, you may
not impose a license fee, royalty, or other charge for exercise of
rights granted under this License, and you may not initiate litigation
(including a cross-claim or counterclaim in a lawsuit) alleging that
any patent claim is infringed by making, using, selling, offering for
sale, or importing the Program or any portion of it.
#### 11. Patents.
A "contributor" is a copyright holder who authorizes use under this
License of the Program or a work on which the Program is based. The
work thus licensed is called the contributor's "contributor version".
A contributor's "essential patent claims" are all patent claims owned
or controlled by the contributor, whether already acquired or
hereafter acquired, that would be infringed by some manner, permitted
by this License, of making, using, or selling its contributor version,
but do not include claims that would be infringed only as a
consequence of further modification of the contributor version. For
purposes of this definition, "control" includes the right to grant
patent sublicenses in a manner consistent with the requirements of
this License.
Each contributor grants you a non-exclusive, worldwide, royalty-free
patent license under the contributor's essential patent claims, to
make, use, sell, offer for sale, import and otherwise run, modify and
propagate the contents of its contributor version.
In the following three paragraphs, a "patent license" is any express
agreement or commitment, however denominated, not to enforce a patent
(such as an express permission to practice a patent or covenant not to
sue for patent infringement). To "grant" such a patent license to a
party means to make such an agreement or commitment not to enforce a
patent against the party.
If you convey a covered work, knowingly relying on a patent license,
and the Corresponding Source of the work is not available for anyone
to copy, free of charge and under the terms of this License, through a
publicly available network server or other readily accessible means,
then you must either (1) cause the Corresponding Source to be so
available, or (2) arrange to deprive yourself of the benefit of the
patent license for this particular work, or (3) arrange, in a manner
consistent with the requirements of this License, to extend the patent
license to downstream recipients. "Knowingly relying" means you have
actual knowledge that, but for the patent license, your conveying the
covered work in a country, or your recipient's use of the covered work
in a country, would infringe one or more identifiable patents in that
country that you have reason to believe are valid.
If, pursuant to or in connection with a single transaction or
arrangement, you convey, or propagate by procuring conveyance of, a
covered work, and grant a patent license to some of the parties
receiving the covered work authorizing them to use, propagate, modify
or convey a specific copy of the covered work, then the patent license
you grant is automatically extended to all recipients of the covered
work and works based on it.
A patent license is "discriminatory" if it does not include within the
scope of its coverage, prohibits the exercise of, or is conditioned on
the non-exercise of one or more of the rights that are specifically
granted under this License. You may not convey a covered work if you
are a party to an arrangement with a third party that is in the
business of distributing software, under which you make payment to the
third party based on the extent of your activity of conveying the
work, and under which the third party grants, to any of the parties
who would receive the covered work from you, a discriminatory patent
license (a) in connection with copies of the covered work conveyed by
you (or copies made from those copies), or (b) primarily for and in
connection with specific products or compilations that contain the
covered work, unless you entered into that arrangement, or that patent
license was granted, prior to 28 March 2007.
Nothing in this License shall be construed as excluding or limiting
any implied license or other defenses to infringement that may
otherwise be available to you under applicable patent law.
#### 12. No Surrender of Others' Freedom.
If conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License. If you cannot convey a
covered work so as to satisfy simultaneously your obligations under
this License and any other pertinent obligations, then as a
consequence you may not convey it at all. For example, if you agree to
terms that obligate you to collect a royalty for further conveying
from those to whom you convey the Program, the only way you could
satisfy both those terms and this License would be to refrain entirely
from conveying the Program.
#### 13. Use with the GNU Affero General Public License.
Notwithstanding any other provision of this License, you have
permission to link or combine any covered work with a work licensed
under version 3 of the GNU Affero General Public License into a single
combined work, and to convey the resulting work. The terms of this
License will continue to apply to the part which is the covered work,
but the special requirements of the GNU Affero General Public License,
section 13, concerning interaction through a network will apply to the
combination as such.
#### 14. Revised Versions of this License.
The Free Software Foundation may publish revised and/or new versions
of the GNU General Public License from time to time. Such new versions
will be similar in spirit to the present version, but may differ in
detail to address new problems or concerns.
Each version is given a distinguishing version number. If the Program
specifies that a certain numbered version of the GNU General Public
License "or any later version" applies to it, you have the option of
following the terms and conditions either of that numbered version or
of any later version published by the Free Software Foundation. If the
Program does not specify a version number of the GNU General Public
License, you may choose any version ever published by the Free
Software Foundation.
If the Program specifies that a proxy can decide which future versions
of the GNU General Public License can be used, that proxy's public
statement of acceptance of a version permanently authorizes you to
choose that version for the Program.
Later license versions may give you additional or different
permissions. However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.
#### 15. Disclaimer of Warranty.
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT
WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND
PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE
DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
CORRECTION.
#### 16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR
CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT
NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR
LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM
TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER
PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
#### 17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
### How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these
terms.
To do so, attach the following notices to the program. It is safest to
attach them to the start of each source file to most effectively state
the exclusion of warranty; and each file should have at least the
"copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper
mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands \`show w' and \`show c' should show the
appropriate parts of the General Public License. Of course, your
program's commands might be different; for a GUI interface, you would
use an "about box".
You should also get your employer (if you work as a programmer) or
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. For more information on this, and how to apply and follow
the GNU GPL, see <https://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your
program into proprietary programs. If your program is a subroutine
library, you may consider it more useful to permit linking proprietary
applications with the library. If this is what you want to do, use the
GNU Lesser General Public License instead of this License. But first,
please read <https://www.gnu.org/licenses/why-not-lgpl.html>.

51
README.md Normal file
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![logo](https://github.com/dahut87/cos2000v1/raw/master/Graphisme/logo.png)
## Présentation du projet
### Qu'est ce que COS2000 ?
COS2000 est un système d'exploitation minimaliste qui vise essentiellement un objectif pédagogique.
Il s'agit avant tout du travail d'un passionné de programmation système.
Le système est développé intégralement en langage assembleur X86. Le "real mode" et "flat unreal mode" sont les modes de fonctionnement du microprocesseur lors de l'execution de COS2000 (comme MsDOS).
#### Qu'est ce qu'un système d'exploitation ?
Il s'agit du logiciel principal qui anime votre ordinateur. Il a pour fonctions principales :
* Piloter des périphériques tels que souris, clavier, écran, imprimante...etc;
* Gérer des fichiers qui sont produit et exploités par des applications;
* Coordonner l'accès aux ressources par plusieurs utilisateurs;
* Détection et récupération des dysfonctionnements;
* Surveiller les performances et assurer une gestion optimale des ressources systèmes.
Sans système d'exploitation votre ordinateur est inopérant: c'est une boite vide !
#### Comment utiliser COS2000 ?
COS2000 n'a pas pour but d'être utilisé en production. Il s'agit d'un système en cours de
développement que vous pouvez néanmoins tester sur un ordinateur physique ou de préférence sur une machine virtuelle.
Il est nécessaire de compiler le système avant de démarrer celui-ci à partir d'un périphérique amovible (clé usb).
#### Sur quel ordinateur fonctionne t'il ?
COS2000 est compatible avec tout ordinateur compatible PC comprenant un processeur compatible 80x86.
#### Ai-je le droit de le copier, de le modifier, de le réutiliser, de le vendre ?
COS2000 est sous licence GPL v3.0, en simplifiant un peu :
* COPIER - OUI
* MODIFIER - OUI
* REUTILISER - OUI en citant l'auteur
* VENDRE - NON
![logo](https://www.gnu.org/graphics/gplv3-127x51.png)
Les détails se trouvent dans le fichier `LICENSE.md`
> “La connaissance s'acquiert par l'expérience,
> tout le reste n'est que de l'information..
>
> ― Albert Einstein
> ― Mathématicien, Physicien

9
asm.bat Executable file
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@echo off
del system.bin
ren id.com system.bin
tasm boot.asm /t/x/m4
tlink boot.obj /x
del boot.obj
exe2boot.com
del boot.exe
cosinit.com

164
boot.asm Executable file
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boots segment
.386
org 000h
assume cs:boots,ds:boots
start:
jmp boot
bootdb db 'COS2000A' ;ID Formatage
dw 512 ;octet/secteur
db 1 ;secteur/cluster
dw 1 ;secteur reserv‚
db 2 ;nb de FAT
dw 224 ;nb secteur rep racine
dw 2880 ;nb secteur du volume
db 0F0h ;ID support
dw 9 ;secteur/FAT
dw 18 ;secteur/piste
dw 2 ;nb de tˆte
dw 0 ;distance 1er sect et sect masse
db 0,0,0,0,0,0,0,0,29h ;?
db 01,02,03,04 ;no de serie
db 'COS2000 ' ;nom de volume
db 'FAT16 ' ;FAT
specialboot:
db 0 ;Secteur Systeme
errorloading db 'The disk inserted in the floppy drive is not a system disk !!',0dh,0
okloading db 'COS is loading',0dh,0
errorboot:
mov si,offset errorloading
call showstr
mov ah,0
int 16h
int 19h
boot:
cli
mov ax,07C0h
mov ds,ax
mov ax,09000h
mov ss,ax
mov sp,0FFFFh
mov ax,1000h
mov es,ax
sti
xor ax,ax
xor dx,dx
int 13h
jc errorboot
mov si,offset okloading
call showstr
mov cx,13
mov bx,100h
call readsector
jc errorboot
mov cx,es:[bx+26]
call readsector
jc errorboot
add bx,512
inc cx
call readsector
jc errorboot
db 2eh,0ffh,1eh
dw offsets
Offsets dw 100h
dw 1000h
ret
DiskSectorsPerTrack dw 18
DiskTracksPerHead dw 80
DiskHeads dw 2
;===================================Afficher un int EDX a l'‚cran================
ShowInt:
push eax edx esi di es
mov di,xy
mov ax,0B800h
mov es,ax
mov eax,edx
mov esi,10
decint2:
xor edx,edx
div esi
add dl,'0'
mov dh,colors
mov es:[di],dx
sub di,2
cmp ax,0
jne decint2
sub di,2
mov xy,di
pop es di esi edx eax
ret
xy dw 20
colors db 4
ReadSector:
push cx dx si
mov AX, CX
xor DX, DX
div DiskSectorsPerTrack
mov CL, DL ;{ Set the sector }
and CL, 63 ;{ Top two bits are bits 8&9 of the cylinder }
xor DX, DX
div DiskTracksPerHead
mov CH, DL ;{ Set the track bits 0-7 }
mov AL, DH
ror AL, 1
ror AL, 1
and AL, 11000000b
or CL, AL ;{ Set bits 8&9 of track }
xor dX, DX
div DiskHeads
mov DH, DL ;{ Set the head }
inc CL
mov SI, 4
TryAgain:
mov AL, 1
mov DL, 0
mov AH, 2
int 13h
jnc Done
dec SI
jnz TryAgain
Done:
pop si dx cx
ret
showcrlf:
push ax bx
mov ax, 0E0Dh
xor bx, bx
int 10h
mov al, 0Ah
int 10h
pop bx ax
ret
showstr:
push ax bx si
again:
lodsb
or al,al
jz fin
cmp al,0Dh
jne noret
call showcrlf
jmp again
noret:
mov ah,0Eh
mov bx,07h
int 10h
jmp again
fin:
pop si bx ax
ret
end start

217
cosinit.asm Executable file
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.model tiny
.486
smart
.code
org 0100h
start:
jmp CopyCOS
DiskSectorsPerTrack dw 18
DiskTracksPerHead dw 80
DiskHeads dw 2
NameBoot db 'Boot.bin',0
Namesystem db 'System.bin',0
Message db 0Ah,0Dh,'Installation of the COS (Celyn Operating System) !!',0Ah,0Dh,'Written By Horde Nicolas',0Ah,0Dh,'Copyright 2000',0Ah,0Dh
db 0Ah,0Dh,'Create boot sector$'
systfile db 0Ah,0Dh,'Creating file allocation table 16 bits$'
systfile2 db 0Ah,0Dh,'Creating file information table 32 bytes$'
systfile3 db 0Ah,0Dh,'Creating operating system files$'
Errormsg db 0Ah,0Dh,0Ah,0Dh,'An error has stopped the copying process !',0Ah,0Dh,'$'
Ok db 0Ah,0Dh,0Ah,0Dh,'The boot sector and the system files had been succefully copied.',0Ah,0Dh, 'To try COS reboot with this system disk',0Ah,0Dh,0Ah,0Dh,'$'
entrie db 'System file',0
db 'sys',0,0
dw 1234h
dw 1234h
dw 1234h
dw 1234h
db 0h
dw 32
dw 512
dw 0h
dw 0
CopyCOS:
mov ah,09
mov dx,offset message
int 21h
jc error
mov ax,3D00h
mov dx,offset nameboot
int 21h
jc error
mov bx,ax
mov ax,4202h
xor cx,cx
xor dx,dx
int 21h
jc error
cmp dx,0
jne error
cmp ax,512
jne error
mov ax,4200h
xor cx,cx
xor dx,dx
int 21h
jc error
mov ah,3fh
mov cx,512
mov dx,offset buffer
int 21h
jc error
mov ah,3eh
int 21h
jc error
mov cx,0
mov bx,dx
call writesector
jne error
mov ah,09
mov dx,offset systfile
int 21h
jc error
mov cx,512/4
mov di,bx
mov eax,0
rep stosd
mov cx,13
fatanymore:
call writesector
jne error
dec cx
cmp cx,1
ja fatanymore
mov di,bx
mov ax,0FFF0h
mov cx,13
rep stosw
mov ax,0FFFFh
stosw
mov word ptr [bx+32*2],33
mov word ptr [bx+33*2],0FFFFh
mov cx,1
call writesector
jne error
mov ah,09
mov dx,offset systfile2
int 21h
jc error
mov cx,13
mov bx,offset entrie
call writesector
jne error
mov ah,09
mov dx,offset systfile3
int 21h
jc error
mov ax,3D00h
mov dx,offset namesystem
int 21h
jc error
mov bx,ax
mov ax,4202h
xor cx,cx
xor dx,dx
int 21h
jc error
cmp dx,0
jne error
sub ax,1 ;+512
cmp ax,0
jl error
shr ax,9
inc ax
mov bp,ax
mov ax,4200h
xor cx,cx
xor dx,dx
int 21h
jc error
mov ah,3fh
mov cx,0FFFFh
mov dx,offset buffer
int 21h
jc error
mov bx,dx
mov cx,32
syst:
call writesector
jne error
add bx,512
inc cx
dec bp
jnz syst
mov ah,09
mov dx,offset ok
int 21h
jc error
ret
error:
mov ah,09
mov dx,offset errormsg
int 21h
ret
WriteSector:
push cx dx si
mov AX, CX
xor DX, DX
div DiskSectorsPerTrack
mov CL, DL ;{ Set the sector }
and CL, 63 ;{ Top two bits are bits 8&9 of the cylinder }
xor DX, DX
div DiskTracksPerHead
mov CH, DL ;{ Set the track bits 0-7 }
mov AL, DH
ror AL, 1
ror AL, 1
and AL, 11000000b
or CL, AL ;{ Set bits 8&9 of track }
xor DX, DX
div DiskHeads
mov DH, DL ;{ Set the head }
inc CL
mov SI, 4
TryAgain:
mov AL, 1
mov DL, 0
mov AH, 3
int 13h
jnc Done
dec SI
jnz TryAgain
Done:
mov cl, AH
mov ah,9
mov dx,offset sign
int 21h
cmp cl,0
pop si dx cx
ret
sign db '.$'
buffer db 512 dup (0)
end start

67
exe2boot.asm Executable file
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.model tiny
.486
smart
.code
org 0100h
start:
jmp transform
NameBoot db 'Boot.exe',0
nameboot2 db 'Boot.bin',0
buffer db 510 dup (0)
dw 0AA55h
message db 0ah,0dh,'Transformation of boot.com to boot.bin...',0ah,0dh,'By Horde Nicolas',0ah,0dh,'Copyright 2000',0ah,0dh,'$'
ok db 0ah,0dh,'The transformation was done succefully !',0ah,0dh,'$'
errormsg db 0ah,0dh,'Some errors has been detected !',0ah,0dh,'$'
transform:
mov ah,09
mov dx,offset message
int 21h
mov ax,3D00h
mov dx,offset nameboot
int 21h
jc error
mov bx,ax
mov ax,4202h
xor cx,cx
xor dx,dx
int 21h
jc error
cmp dx,0
jne error
mov ax,4200h
xor cx,cx
mov dx,512
int 21h
jc error
mov ah,3fh
mov cx,512
mov dx,offset buffer
int 21h
jc error
mov ah,3eh
int 21h
jc error
mov ah,3ch
xor cx,cx
mov dx,offset nameboot2
int 21h
jc error
mov ah,40h
mov cx,512
mov dx,offset buffer
int 21h
jc error
mov ah,09
mov dx,offset ok
int 21h
ret
error:
mov ah,09
mov dx,offset errormsg
int 21h
ret
end start

367
id.asm Executable file
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.model tiny
.386c
.code
org 0100h
colores equ 7
logoY equ 064h
logo2X equ 0A0h
logo2Y equ 064h
ecartlogo2 equ 13Eh
logocoordsize equ 0B40h
logo2coordsize equ 26Ch
zoomout equ 43h
start:
;mov ax,cs
mov ax,01000h
mov ds,ax
mov es,ax
mov gs,ax
mov ax,13h
int 10h
mov dx,3C8h
mov al,7
out dx,al
inc dx
xor al,al
out dx,al
out dx,al
out dx,al
mov si,offset logo2text
call showstr
mov ax,0A000h
mov ds,ax
push ds
push es
push gs
mov di,logo2coord
mov cx,logo2coordsize
xor si,si
xor dx,dx
xor bx,bx
loopcoord2:
lodsb
or al,al
jz nothingcoord2
mov ax,dx
sub ax,5Ah
stosw
mov ax,bx
sub ax,14h
stosw
inc gs:nblogo2
nothingcoord2:
add dx,3
cmp dx,0BAh
jne short loc_3
xor dx,dx
add si,102h
add bx,4
loc_3:
loop loopcoord2
pop ds
call zerocurs
mov si,offset data6
call showstr
pop es
pop ds
mov cx,logocoordsize
xor si,si
xor dx,dx
xor bx,bx
loopcoord:
lodsb
or al,al
jz nothingcoord
mov ax,dx
sub ax,32h
stosw
mov ax,bx
shl ax,1
sub ax,1Eh
stosw
inc gs:nblogo
nothingcoord:
inc dx
inc dx
cmp dx,60h
jne short loc_6
xor dx,dx
add si,110h
inc bx
loc_6:
loop loopcoord
push ds
pop es
push gs
pop ds
masterloop:
inc logox ;++++
inc data_10
mov bl,data_10
xor bh,bh
mov al,data_1[bx]
cbw
mov data_11,ax
add bl,zoomout
mov al,data_1[bx]
cbw
mov data_12,ax
mov cx,nblogo2
push cx
push cx
mov si,logo2coord
showlogo2:
lodsw
mov data_7,ax
lodsw
mov data_8,ax
mov data_9,0FFCEh
push cx
push si
mov si,offset data_8
push si
mov di,offset data_9
call sub_1
mov si,offset data_7
call sub_1
pop di
call sub_1
pop si
mov ax,100h
imul data_7
mov bx,data_9
add bx,140h
idiv bx
add ax,logo2X
mov bp,ax
mov ax,100h
imul data_8
mov bx,data_9
add bx,140h
idiv bx
add ax,logo2Y
mov bx,140h
imul bx
add ax,bp
mov di,ax
push si
sub si,logo2coord
shr si,1
mov ds:data_16e[si],di
pop si
mov bx,data_9
mov cl,4
shr bx,cl
pop cx
mov al,17h
sub al,bl
mov ah,al
stosw
add di,ecartlogo2
stosw
loop showlogo2
pop si
shl si,1
shl si,1
add si,logo2coord
mov cx,nblogo
showlogo:
push cx
lodsw
imul data_12
mov di,ax
lodsw
imul data_11
sub di,ax
mov cl,7
sar di,cl
add di,logoX
mov bx,di
sub si,4
lodsw
imul data_11
mov di,ax
lodsw
imul data_12
add di,ax
sar di,cl
add di,logoy
mov ax,140h
imul di
add ax,bx
mov di,ax
pop cx
mov ax,cx
shl ax,1
mov bx,data_17e
add bx,ax
mov [bx],di
mov al,28h
stosb
loop showlogo
mov dx,3DAh
synchro:
in al,dx
test al,8
jnz synchro
synchroagain:
in al,dx
test al,8
jz synchroagain
mov si,data_16e
pop cx
add cx,nblogo
add cx,14h
showlogo2effect:
lodsw
mov di,ax
xor ax,ax
stosw
add di,ecartlogo2
stosw
loop showlogo2effect
in al,60h
cmp al,1
je endofprog
jmp masterloop
endofprog:
mov ax,3
int 10h
int 20h
ret
sub_1 proc near
mov ax,[si]
imul data_12
mov bp,ax
mov ax,[di]
imul data_11
sub bp,ax
mov cl,7
sar bp,cl
push bp
mov ax,[si]
imul data_11
mov bp,ax
mov ax,[di]
imul data_12
add bp,ax
sar bp,cl
mov [di],bp
pop ax
mov [si],ax
retn
sub_1 endp
showcrlf:
push ax bx
mov ax, 0E0Dh
xor bx, bx
int 10h
mov al, 0Ah
int 10h
pop bx ax
ret
zerocurs:
push ax bx dx
mov ah,02h
mov bh,0
mov dx,0
int 10h
pop dx bx ax
ret
showstr:
push ax bx si
again:
lodsb
or al,al
jz fin
cmp al,0Dh
jne noret
call showcrlf
jmp again
noret:
mov ah,0Eh
mov bx,colores
int 10h
jmp again
fin:
pop si bx ax
ret
logoX dw 0A0h ;++++
data_1 db 0
db 03h, 06h, 09h, 0Ch, 10h, 13h
db 16h, 19h, 1Ch, 1Fh
db '"%(+.1369<?ADGILNQSUXZ\^`bdfhjkm'
db 'opqstuvxyzz{|}}~~~'
db 7 dup (7Fh)
db '~~~}}|{zzyxvutsqpomkjhfdb`^\ZXUS'
db 'QNLIGDA?<9631.+(%"'
db 1Fh, 1Ch, 19h, 16h, 13h, 10h
db 0Ch, 09h, 06h, 03h, 00h,0FDh
db 0FAh,0F7h,0F4h,0F0h,0EDh,0EAh
db 0E7h,0E4h,0E1h,0DEh,0DBh,0D8h
db 0D5h,0D2h,0CFh,0CDh,0CAh,0C7h
db 0C4h,0C1h,0BFh,0BCh,0B9h,0B7h
db 0B4h,0B2h,0AFh,0ADh,0ABh,0A8h
db 0A6h,0A4h,0A2h,0A0h, 9Eh, 9Ch
db 9Ah, 98h, 96h, 95h, 93h, 91h
db 90h, 8Fh, 8Dh, 8Ch, 8Bh, 8Ah
db 88h, 87h, 86h, 86h, 85h, 84h
db 83h, 83h, 82h, 82h, 82h, 81h
db 81h, 81h, 81h, 81h, 81h, 81h
db 82h, 82h, 82h, 83h, 83h, 84h
db 85h, 86h, 86h, 87h, 88h, 8Ah
db 8Bh, 8Ch, 8Dh, 8Fh, 90h, 91h
db 93h, 95h, 96h, 98h, 9Ah, 9Ch
db 9Eh,0A0h,0A2h,0A4h,0A6h,0A8h
db 0ABh,0ADh,0AFh,0B2h,0B4h,0B7h
db 0B9h,0BCh,0BFh,0C1h,0C4h,0C7h
db 0CAh,0CDh,0CFh,0D2h,0D5h,0D8h
db 0DBh,0DEh,0E1h,0E4h,0E7h,0EAh
db 0EDh,0F0h,0F4h,0F7h,0FAh,0FDh
logo2text db 'Cos 2000' ,0
data6 db 'Speedy', 0dh,0dh
data61 db 'System' ,0dh,0Dh
data62 db 'Inside' ,0
data_7 dw 0
data_8 dw 0
data_9 dw 0
data_10 db 0
data_11 dw 0
data_12 dw 0
nblogo2 dw 0
nblogo dw 0
data_15 = $ ;*
data_16 = $+9C4h ;*
data_17 = $+0B2Ch ;*
logo2coord = offset data_15 ;*
data_16e = offset data_16 ;*
data_17e = offset data_17 ;*
end start