My wording of that was poor. I was confident that reading leaked DOS
source was bad, I wanted to make sure that the IBM XT reference manual
(containing the 5150 ROM BIOS listing) and Undocumented DOS were okay.
On Sat, Jan 3, 2015 at 11:18 AM, Jim Hall <[email protected]> wrote:
>
>
>> > Obviously reading leak MS/DR-DOS source code is bad, but I want to
>> > make sure.
>> >
>> Those are of course off-limits. (Well, a bit questionable in case of
>> DR-DOS, I don't know what exactly the license said when it was briefly
>> available as OpenDOS)
>>
>>
> Yes, these are off-limits.
>
> If you download and study the MS-DOS source code, you should not
> contribute code to FreeDOS afterwards. We want to avoid any suggestion that
> FreeDOS has been "tainted" by this proprietary code. Note that Microsoft
> released the source code to an early MS-DOS (version 1, I think?) in March,
> 2014. But we have consistently asked that FreeDOS developers should not
> download this.
>
> Also, DR-DOS was released as OpenDOS at one point, as Ralf says. OpenDOS
> used a very strange license that basically said "you may look, but do not
> touch." You were allowed to study the source code to OpenDOS, but could not
> use it in other projects, and could not modify the source code to fix bugs
> or make it do something else. For this reason, OpenDOS is not really "open
> source software," and I ask that FreeDOS developers do not download and
> study the OpenDOS source code.
>
> DR-DOS has not released any source code under the name "DR-DOS." So if
> anyone finds source code to DR-DOS, you should assume this is illegally
> leaked and not look at it.
>
>
> Jim
>
>
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--
--Andy
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