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- Newsgroups: comp.os.msdos.programmer
- Path: sparky!uunet!microsoft!hexnut!jenk
- From: jenk@microsoft.com (Jen Kilmer)
- Subject: Re: MSDOS 5.0 vs other DOS 5s : Bug?
- Message-ID: <1992Sep11.053942.11620@microsoft.com>
- Date: 11 Sep 92 05:39:42 GMT
- Organization: Microsoft Corporation
- References: <bjorn.myrland.90.716051993@sipaa.sintef.no>
- Keywords: MSDOS, bug
- Lines: 56
-
- In article <bjorn.myrland.90.716051993@sipaa.sintef.no> bjorn.myrland@sipaa.sintef.no (Bjorn Myrland) writes:
- >I have a problem that I hope at least one of you out there could shed some
- >light on. We have a program that functions very well when run on machines
- >with all other DOSs than Microsoft's own DOS 5. It runs ok on DOS 3.3, 4 and
- >on OEM versions of DOS 5, but *not* on the original MSDOS 5.
-
- Key issue is WHICH oem versions of DOS 5. Some OEMs license MS-DOS in
- much the same form that you, the enduser, receives it. Others receive
- selected source code (IO.SYS & other hardware dependent stuff). Finally,
- those who want to pay Microsoft major $$$ receive the source code to
- everything.
-
- No, these oems are not required to inform Microsoft of the changes
- that they make. Some of them are kind enough to send microsoft
- workarounds for proprietary features of their hardware/ROM BIOS;
- others are kind enough to send microsoft their fixes to MS-DOS bugs.
-
- >A call to Microsoft's MSDOS technical support did not do much good. The MS
- >guy believed that the OEM versions were all based on Microsoft's code, with
- >only minor changes.
-
- Most have only minor changes, particularily with the later versions.
- DOS 2 routinely have major changes; 3...well, you ever notice how
- some MS-DOSes could create partitions larger than 32M? Microsoft didn't
- write that.
-
- If it's not an OEM version of DR-DOS, it originated with Microsoft.
-
- >Furthermore, no revisions of MSDOS 5 have ever been
- >issued (i.e. no 5.01 etc). If this is the case, then my application should
- >run equally good or bad on all DOSs, which it obviously does not.
- >
- >There is a bug in my application, no doubt, but with some rather odd
- >properties that I partly will have to explain to the users who cannot
- >run the program even on plain vanilla machines with the original MSDOS
- >5 installed. So, could somebody help me clear up on these DOS matters a
- >little bit? For example:
- >
- > - Who licences DOS code from who?
- > - Who uses IBMBIOS.COM/IBMDOS.COM and who uses IO.SYS/MSDOS.SYS ?
-
- IBM has traditionally named their files IBMBIO.COM/IBMDOS.COM. Some
- OEMs have also followed this tradition, in part because of applications
- that wouldn't recognize IO.SYS/MSDOS.SYS (nice, real nice).
-
- > - Are there any known functional differences between the different
- > DOS brands? Any of the OEMs having bug-fixed the original
- > MSDOS code?
-
- None that I know of. Note the above, that OEMs do not have to report
- changes to Microsoft.
-
-
- -jen
- Ms Dos Enduser Support // Microsoft pays me to answer the phone, not post.
- I am not named Bill, I am not very rich, and I do not speak for Microsoft.
-