Re: 512-byte OS Contest
Posted: Wed Dec 31, 2008 9:28 pm
FAT writing as in writing files to the FAT and root dir on the floppy.
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512-byte OS Contest
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Re: 512-byte OS Contest
Posted: Wed Dec 31, 2008 9:31 pm
ah, well i will see what i can do, tommarow
Re: 512-byte OS Contest
Posted: Thu Jan 01, 2009 12:24 am
I'm sort of surprised you're not more interested in this contest, but then again, maybe I shouldn't be.Brynet-Inc wrote:What an entirely pointless topic..
Anyway, I attempted something like this years ago, and didn't get terribly far in it, but I wish everyone else good luck, I think we'll end up with some good projects this time around!
-512
Re: 512-byte OS Contest
Posted: Thu Jan 01, 2009 1:42 am
Interesting co-inky-dink that your name is 512dev and you're replying to a topic about 512-byte OSes.. 
Re: 512-byte OS Contest
Posted: Thu Jan 01, 2009 2:03 am
Not exactly a coincidence, but I don't really feel like explaining right now, and it's largely irrelevant anyway considering that was a few years ago.
-512
-512
Re: 512-byte OS Contest
Posted: Thu Jan 01, 2009 4:19 am
Cool, 13 posts in almost 4 years...
Re: 512-byte OS Contest
Posted: Thu Jan 01, 2009 10:03 am
Eh so I haven't been as active posting here as I should be =/
-512
-512
Re: 512-byte OS Contest
Posted: Thu Jan 01, 2009 10:57 am
Just got an entry PM'd to me by Jacobbus, looks like some kind of pmode monitor!
Re: 512-byte OS Contest
Posted: Thu Jan 01, 2009 2:07 pm
It's meant to be something like a hex editor 
it allows you to edit the 4 GB addressable memory
it has one feature: by pressing enter the program at the selected location is executed
that's what makes it an OS I gues
the bad news is that the program has to be coded by hand using the hex-editor
more info in the Readme.txt in the .zip
it allows you to edit the 4 GB addressable memory
it has one feature: by pressing enter the program at the selected location is executed
that's what makes it an OS I gues the bad news is that the program has to be coded by hand using the hex-editor
more info in the Readme.txt in the .zip
Re: 512-byte OS Contest
Posted: Thu Jan 01, 2009 2:14 pm
Well, looks real nifty, good luck!
Re: 512-byte OS Contest
Posted: Fri Jan 02, 2009 11:05 pm
Are the entries only going to be tested on QEMU or Bochs? (I've currently no test machine to use, atm; should I make something up.)
Re: 512-byte OS Contest
Posted: Fri Jan 02, 2009 11:08 pm
Well, I test on Virtual PC for 16/32-bit stuff and Bochs 2.3.7 for long mode (*cough*E*cough) but I guess most will use Bochs and QEMU.
Re: 512-byte OS Contest
Posted: Fri Jan 02, 2009 11:09 pm
Okay, so that means they don't necessarily *have* to work on a real machine, then, yes?
Re: 512-byte OS Contest
Posted: Fri Jan 02, 2009 11:15 pm
Well, if they do work on RHW, I'd guess you could possibly get more votes from the public poll!
Re: 512-byte OS Contest
Posted: Sat Jan 03, 2009 5:25 am
Mine entry: Inflater's Tiny-D0S - DOS EXE launcher in 512 bytes
Link in attachment.
Regards
inflater
@Troy: The e-mail I've sent you was for a reason...
Code: Select all
;;; Instrunctions!!!
;;; 1. Prepare a blank FAT12 floppy disk, insert it in drive A:
;;; 2. Copy any EXEs you like to it (please note that DOS INT 21h is
not supported and the EXEs need to access ROM-BIOS ints to work, one
such executable is in the archive)
;;; 3. Run WRITE.BAT - the EXEs will be kept intact there
;;; 4. Reboot the computer with the floppy in drive
;;; The only DOS function emulated here is AH=0x4C - exit function, which
;;; is configured to jmp far [0:0x7c00], that will reload this "OS" from RAM.
;;; Give me another 512 bytes to emulate at least five INT 21h functions :-PRegards
inflater
@Troy: The e-mail I've sent you was for a reason...