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adefeo



Joined: 12 Jan 2004
Posts: 46
Location: Bellmore, Long Island, New York
adefeo
I'm making an announcement about my little OS named Metropolis. After a few days in development, I've released its first version. It doesn't do much, but it's a foundation for future versions to build on.

Metropolis 2006.R1 can be downloaded from http://512.bry.ath.cx/metro_releases/2006.R1.0/metro2k6R1.rar (66KB)

A Win32 Installer with Bochs 1.2 preloaded with Metro 2k6.R1 can be downloaded from http://512.bry.ath.cx/metro_releases/2006.R1.0/metrobe.exe (227KB)

It's a small realmode OS coded entirely in FASM.

Thanks,
Anthony

PS: The site is in development; it will be at http://512net.vze.com when finished. Also, forums are online at http://512net.vze.com/forum/


Description: Screenshot of Metropolis 2006.R1 in action.
Filesize: 48.97 KB
Viewed: 1690 Time(s)

metroshot.jpg




Last edited by adefeo on 06 Jan 2006, 22:57; edited 1 time in total
Post 03 Jan 2006, 23:36
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RedGhost



Joined: 18 May 2005
Posts: 443
Location: BC, Canada
RedGhost
most os's are more complicated and further along in development (i am not insulting) so i am glad you released this os source, it allowed me to examine and understand whats going on by following along with a very easy-to-read source, nice job thank you

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Post 04 Jan 2006, 23:10
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adefeo



Joined: 12 Jan 2004
Posts: 46
Location: Bellmore, Long Island, New York
adefeo
I know, thanks. And it's simple just for the fact that this is its first ever release, and only took 3 days to code and debug....
Post 05 Jan 2006, 01:30
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Dex4u



Joined: 08 Feb 2005
Posts: 1601
Location: web
Dex4u
Yes it best to keep it simple, even when it gets bigger, by breaking it down into small parts, nice work.
Post 05 Jan 2006, 23:55
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Redragon



Joined: 27 Nov 2004
Posts: 101
Location: U.S.
Redragon
the download link is broken

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Post 06 Jan 2006, 22:42
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adefeo



Joined: 12 Jan 2004
Posts: 46
Location: Bellmore, Long Island, New York
adefeo
Whoops, sorry, forgot to update it.
Here: http://512net.vze.com/metro_releases/2006.R1.0/
(goes to same place as http://512.bry.ath.cx/metro_releases/2006.R1.0/ )
Post 06 Jan 2006, 22:57
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DC740



Joined: 01 Oct 2004
Posts: 74
Location: Argentina
DC740
I tested it on my 286 with 2 MB ram and 25 Mhz and it boots ok (the first home made OS that boot on that machine) but when I hit enter it freezes...

by the way, nice work!!!
Post 07 Jan 2006, 18:20
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DC740



Joined: 01 Oct 2004
Posts: 74
Location: Argentina
DC740
ok, i thougth that you would fix the problem.... I was bored so i did it by myself... and I don't know why my 286 is not recognizing the repe movsb command... it freezes every time the OS executes it:
so this is the temporary fix... (repe should work, I don't know what's going on)
just replace the kernel code with this one:
Code:
compare_command_cls:
command_length equ 3

;@@@@@@@@@@@@@@@ Old loop
;#####################################

;mov di, cmdbuffer
;mov si, command_cls
;mov cx, command_length
;repe cmpsb
;##############################
;END OF old loop
;This works:
mov di, cmdbuffer
cmp [di],word 'cl'
jne @f
inc di
cmp [di],word 'ls'
jne @f
jmp cls
@@:

;compare_command_help:
mov di, cmdbuffer
cmp [di],word 'he'
jne @f
add di,2
cmp [di],word 'lp'
jne @f
jmp help
@@:

;compare_command_ver:
mov di, cmdbuffer
cmp [di],word 've'
jne @f
inc di
cmp [di],word 'er'
jne @f
jmp ver
@@:


;compare_command_halt:
mov di, cmdbuffer
cmp [di],word 'ha'
jne @f
add di,2
cmp [di],word 'lt'
jne @f
jmp halt
@@:

;compare_command_reboot:
mov di, cmdbuffer
cmp [di],word 're'
jne @f
add di,2
cmp [di],word 'bo'
jne @f
add di,2
cmp [di],word 'ot'
jne @f
jmp reboot
@@:
;jmp invalid_cmd


;invalid_cmd:
mov si, invalidcmd
call kprint
jmp commandready
    

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Post 27 Mar 2006, 17:15
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Octavio



Joined: 21 Jun 2003
Posts: 366
Location: Spain
Octavio
DC740 wrote:
ok, i thougth that you would fix the problem.... I was bored so i did it by myself... and I don't know why my 286 is not recognizing the repe movsb command
[/code]

'rep movsb' should work on your 286 else the computer will probably crash before the OS is loaded , but i think that you are confusing 'movsb' and 'cmpsb'.
Post 28 Mar 2006, 15:35
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DC740



Joined: 01 Oct 2004
Posts: 74
Location: Argentina
DC740
hehe yes, thats true, I ment "repe cmpsb"... anyway it doesn't work... I put this after and before the instruction:

;@@@@debug
pusha
mov esi,ERRORSTRING ; error string is something like "before repe cmpsb
call kprint ;this prints the string
popa

repe cmpsb

;@@@@debug
pusha
mov esi,ERRORSTRING2 ; after repe cmpsb | but this code is never executed :S
call kprint ;this prints the string
popa

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Post 28 Mar 2006, 17:18
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Octavio



Joined: 21 Jun 2003
Posts: 366
Location: Spain
Octavio
DC740 wrote:
hehe yes, thats true, I ment "repe cmpsb"... anyway it doesn't work...

run it with Dos debug ,if it crash at 'rep compsb' then you can say it is a hardware problem, but the most probable is that there is some bug in the program.
Post 29 Mar 2006, 07:53
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