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| From | Jonathan de Boyne Pollard <J.deBoynePollard-newsgroups@NTLWorld.COM> |
| User-Agent | Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.9.2.13) Gecko/20101207 Thunderbird/3.1.7 |
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| Newsgroups | comp.os.os2.setup.video, comp.os.os2.programmer.misc, comp.os.os2.misc, comp.os.os2.beta |
| Subject | Re: What support for Plug-and-Play does your virtual machine have? |
| References | <IU.D20110126.T110040.P1026.Q1@J.de.Boyne.Pollard.localhost> <gjxI70UYBlcC-pn2-IpTBCy9SodZ4@trevor2.dsl.pipex.com> <IU.D20110128.T140311.P19611.Q0@J.de.Boyne.Pollard.localhost> <gjxI70UYBlcC-pn2-v2OPx7frLGzV@trevor2.dsl.pipex.com> |
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| Lines | 28 |
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| NNTP-Posting-Date | Wed, 02 Feb 2011 00:07:36 UTC |
| Organization | virginmedia.com |
| Date | Tue, 01 Feb 2011 22:51:01 +0000 |
| Xref | csiph.com comp.os.os2.setup.video:66 comp.os.os2.programmer.misc:1292 comp.os.os2.misc:2090 comp.os.os2.beta:165 |
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> This is VirtualBox 2.0.4 btw but I don't think it changes - still > works on 4.0.0 which is the latest that I've tried (USB is another > matter which is why I'm still on 2.0.4). > Versions are important. (-: I've tracked down the source for the ROM image that VirtualBox uses. It doesn't have, as I surmised, Plug-and-Play support. Interestingly, there's a common ancestry here with the ROM image used by Bochs, from an earlier version of which the VirtualBox source was taken, and which (since then) gained skeleton Plug-and-Play support somewhere in between version 2.4 and version 2.4.5. VirtualBox hasn't kept track with the Bochs improvements, it seems. What Bochs has isn't enough for real world use, however, so even if VirtualBox caught up with Bochs it wouldn't be enough. It only implements the version check. All other functions fail with an error. This is pretty useless. So I suppose that we're lucky that no-one with Bochs 2.4.5 spoke up. (-: This is exceedingly annoying, because these virtual machines don't operate like real machines in this regard. (Real machines have had fully implemented Plug-and-Play firmware support as standard since the late 1990s.) But its one more datum supporting the point that I've long made that x86 virtual machines don't set out to exactly duplicate real hardware.
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Re: What support for Plug-and-Play does your virtual machine have? Jonathan de Boyne Pollard <J.deBoynePollard-newsgroups@NTLWorld.COM> - 2011-02-01 22:51 +0000
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