Author Topic: MS-DOS source is officially released  (Read 21561 times)

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Offline willrandship

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Re: MS-DOS source is officially released
« Reply #15 on: April 12, 2014, 12:40:11 am »
FYI all x86 CPUs support the 16 bit mode. Nowadays the common way to implement it is through hardware emulation (read: it looks like normal operation but it's slower than 32 or 64 bit modes would be) by using microcode instructions. They basically have a CPU inside the CPU that executes bigger instructions as a series of smaller instructions. As such, they take several cycles to complete, but since modern CPUs are several hundred times faster than a 33 MHz machine, it shouldn't be an issue.

Offline Streetwalrus

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Re: MS-DOS source is officially released
« Reply #16 on: April 12, 2014, 03:12:28 am »
Oh nice. If this micro code the thing that emulates CISC on a RISC too ?

Offline josh landers

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Re: MS-DOS source is officially released
« Reply #17 on: April 14, 2014, 12:47:48 pm »
Isn't DOS 16 bit x86 though ?
Yes but i think a person need only buy a 16 bit processer for it to work, or just ajust the code to be 32 bit.
Judging from the terms you may not distribute ms dos nor derivative works, so if you make a gui for it it will be only for you to use.
Also right,
Judging from the terms you may not distribute ms dos nor derivative works, so if you make a gui for it it will be only for you to use.
Well, you could make it into a patch, then you are free to distribute it.
This can even be done in an installer that automatically downloads DOS and applies the patch.

Incorrect, you can not do that. Its not TI-care.org, its MS-care.org... ;)





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Offline TIfanx1999

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Re: MS-DOS source is officially released
« Reply #18 on: April 14, 2014, 03:03:05 pm »
Wow, those are reallllllllllyyy old versions of DOS. Something newer would have been nice, but it's still super cool. :D

Offline Keoni29

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Re: MS-DOS source is officially released
« Reply #19 on: April 14, 2014, 05:15:52 pm »
Microsoft STILL distributes ms dos 6...
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Offline Streetwalrus

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Re: MS-DOS source is officially released
« Reply #20 on: April 14, 2014, 07:53:24 pm »
For free though isn't it ?

Offline Keoni29

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Re: MS-DOS source is officially released
« Reply #21 on: April 14, 2014, 08:02:45 pm »
They still distribute dos, but not windows xp :P
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Offline Streetwalrus

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Re: MS-DOS source is officially released
« Reply #22 on: April 14, 2014, 08:11:36 pm »
Talk about consistence. :P

Offline Juju

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Re: MS-DOS source is officially released
« Reply #23 on: April 15, 2014, 01:21:19 am »
Yep, MS-DOS 6 is still in the MSDN store.

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Offline Keoni29

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Re: MS-DOS source is officially released
« Reply #24 on: April 15, 2014, 02:52:11 am »
Hmmm I don't like this bit:
Quote
If you create Derivative Works, you grant to Microsoft a non-exclusive, perpetual, irrevocable, royalty-free, assignable, sublicenseable license to reproduce, distribute, publicly display, modify, use, make, have made, import, and sell such Derivative Works.
This licence doesn't encourage modifying the os to suit your own needs. If I wanted to make an operating system I'd use a linux kernel instead of modding ms dos.
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Offline Streetwalrus

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Re: MS-DOS source is officially released
« Reply #25 on: April 15, 2014, 04:22:26 am »
Indeed. It's Microsoft after all. But I don't know if they really care.

Offline Juju

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Re: MS-DOS source is officially released
« Reply #26 on: April 15, 2014, 04:34:08 am »
Actually, seems they're encouraging usage of the code more for educational and research purposes, as in, a CS teacher might use it to teach assembly and/or how to make a basic operating system. They might even ask their students to e.g. add a custom command into command.com as an assignment.

Microsoft actually cares a lot about education.

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Offline Streetwalrus

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Re: MS-DOS source is officially released
« Reply #27 on: April 15, 2014, 04:47:39 am »
That is nice at least. But the rules are very restrictive for such an old piece of software few people care about.

Offline SpiroH

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Re: MS-DOS source is officially released
« Reply #28 on: April 15, 2014, 09:30:40 am »
..
Microsoft actually cares a lot about education.
Cough, cough, watya mean? as a potential market? that, i might just agree otherwise i'd say they couldn't care less.

That is nice at least. But the rules are very restrictive for such an old piece of software few people care about. 8)
well, some oldie concepts last for centuries, as you well know... so, can we make any use of it? :P

Offline Streetwalrus

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Re: MS-DOS source is officially released
« Reply #29 on: April 15, 2014, 09:36:18 am »
That is nice at least. But the rules are very restrictive for such an old piece of software few people care about. 8)
Why did you add the sunglasses ? :P
Also, that's true. But the way they put it sounds like "we released the source, you can take a look at it but if you change the smallest byte, it's ours". So there's no use for that. :/