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04-02-25 07:34 AM |
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| Main - msg db 'Computer Address',0xa - operating system talk (2) |
| Ailure |
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Retired Staff
 Buzzy Beetle Red pandas and stuff Level: 43    
Posts: 226/398 EXP: 552357 Next: 12689 Since: 01-01-12 Last post: 2828 days Last view: 1030 days |
Well those CPU's have no backwards compatibility with x86 so on those it was probably done with hardware emulation. I don't recall hearing about Win16 being able to run in the powerPC version of Win NT 4, so any citations on that?
Win NT is apparently designed to be portable though. The last time they ported it to a non-X86 platform was with the X-box 360 I belive, and no Windows mobile platforms does not count (it's not the same OS base). ____________________ AIM: gamefreak1337, MSN: Emil_sim@spray.se, XMPP: ailure@xmpp.kafuka.org, YouTube
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| Nicole |
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Administrator
Goddess of the Apocalypse Level: 201
Posts: 696/14042 EXP: 115730304 Next: 1416324 Since: 01-03-12 From: Boston, MA Last post: 599 days Last view: 598 days |
♥696 ✿4837 ★29 Posted by Ailure If I recall correct Win16 does use some processor functions that are forbidden in 64-bit mode (since AMD tried to clear some of x86's cruft), and Microsoft decided that it wasn't worth fixing... But I mean, progman is a Win32 program on NT, isn't it? So it's not directly connected to that. |
| Lili~ ♥ |
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Normal User
Queen Lesbian of Kafuka Level: 161
Posts: 996/8412 EXP: 53646108 Next: 467009 Since: 01-06-12 Last post: 3095 days Last view: 1618 days |
Posted by Ailure I remember reading about someone who actually installed NT4 on his Motorola PowerStack2 and tried out stuff with it. Now if I could find that article again... Posted by Nicole Indeed, the Program Manager was recompiled as a 32-bit program (as was the File Manager). |
| Emuz |
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Site Administrator
 11 Hit Combo: Mother's Rosario Level: 109
Posts: 663/3393 EXP: 13751971 Next: 207674 Since: 12-30-11 From: Akron, Ohio; USA Last post: 245 days Last view: 2 days |
One thing I will say with Windows 8 is, I loved the changes they did with "Desktop". The enhancements with multi monitor setups was a welcome change. As for Metro, frankly I didn't find myself using it must on the beta. I could see how it would be nice on a tablet, but the keyboard and mouse kind don't mesh exactly. They did do a good job with what they have, but still feels like the wrong tools for the job.
As always I'll be testing it at each step, being the OS hobbyist that I am.  The Dynamic Profile Administrator™"Never Knows Best" Note: if you can see this my layout broke. ALL THE CREDITS WILL BE REVEALED!! 'Victory Noriko' by @thatsheepagain. 'Chibi Dance Noriko' by @Haru__Kitsu. 'Deity's Night Out (Featuring Gabbie)' by @thatsheepagain Noriko Emotes by @Haru__Kitsu. Side Bar Noriko by @thatsheepagain 'Noriko's Nature Walk' by @projectTiGER_ Emotive Noriko by @thatsheepagain. "Space Candy Noriko" by BerryVerrine. "Super Sharp Noriko" by Xionfes. A gift illustration from the wonderful EverKinzPony! "Magical Girl Noriko" by @cute_hospital! "Patient Chibi Noriko" by @Ruii_ki! 'Dapper '60s Noriko' by @thatsheepagain. 'Shiny Chibi Noriko' by @inioli. 'Flower Veil Noriko' by @Sushiee_. 'Noriko in Realism' by @_Sarybuu. 'Noriko's Midnight Adventure' by @projectTiGER_ 'Yukata Noriko' by @yunyunmaru_ 'Birthday Wishes Noriko' by @thatsheepagain |
| Kiyoshi |
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Normal User
HEY HEY HEY STAY OUTTA MAH SHED Level: 65
Posts: 964/1016 EXP: 2252629 Next: 82999 Since: 01-02-12 Last post: 4726 days Last view: 4697 days |
Posted by AilureFalse, due to the way AMD64/EM64T works. Pointers are very different, and the processors can't switch to 16-bit in a 64-bit environment, but low-level emulation (bochs, dosbox, virtualbox) is very possible, while high-level like ntvdm or vdmsound is not. Remember 32-bit apps can run natively in a 64-bit environment. Anything that runs in kernel mode, like a driver, needs to be 64-bit. Mac OS X goes around this limitation by using both a 32-bit and 64-bit kernel at the same time. Posted by AilureWhat was the "e" in Wine for? Windows 7 Professional and higher have Windows XP Mode for this, which integrates very nicely in your start menu. VirtualBox is often the better option though, especially in seamless mode. Also, hardware virtualization (AMD-V/VT-x) even makes it possible to run a 64-bit Linux on a 32-bit Windows XP! ____________________ I don't give a flying feather |
| Nadia |
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Normal User
Axew Level: 23
Posts: 35/93 EXP: 62366 Next: 5357 Since: 01-05-12 From: Denmark Last post: 2484 days Last view: 1402 days |
WINE: WINE Is Not an Emulator
Also look at this. |
| Lili~ ♥ |
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Normal User
Queen Lesbian of Kafuka Level: 161
Posts: 1003/8412 EXP: 53646108 Next: 467009 Since: 01-06-12 Last post: 3095 days Last view: 1618 days |
Posted by Kiyoshi ntvdm does have low-level emulation available, else they could have never gotten it to work on non-Intel architectures like the MIPS, which has no compatibility whatsoever with Win16. They were just too lazy to fix it up and port it to Win64, that is all. |
| Kiyoshi |
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Normal User
HEY HEY HEY STAY OUTTA MAH SHED Level: 65
Posts: 973/1016 EXP: 2252629 Next: 82999 Since: 01-02-12 Last post: 4726 days Last view: 4697 days |
Posted by Liliana Posted by Nina '"Wine is not just an emulator" is more accurate.' Sounds kinda like the way OS/2 did Win3.1, using an API subsystem. There is another way, a translation layer like Win32s, but this is very slow. In these modern times, PC emulators can use the hardware virtualization of processors as well, allowing for hypervisors and multiple OSes at the same time. Looking at the most relevant part of the Wikipedia article, only protected mode 16-bit code can run in Long mode, so that covers Win3.1 apps for the CPU limitation. 64-bit Windows has wrapper code for some old 16-bit installers though, but even if they could somehow get Win3.1 apps working normally (and they probably can't because of the memory mapping involved), Windows XP mode is by far the better option, since it can run DOS apps as well. Real mode DOS apps can run perfectly in DOSBox. The best example of a game relying heavily on Real Mode is Lemmings in High Performance PC mode, as this had lots of glitches on both Win3.1 and OS/2 3.0, and DOSBox runs it quite well. I don't know of any DOS games that use V86 mode (this would be quite silly as it was made for task switching and semi-parallel multi-tasking in the first place). There are DOS games that use protected mode, but they all use reflectors (DOS4GW, PMODE, CWSDPMI) that can rapidly switch between Real Mode and Protected Mode when DOS services are needed. ____________________ I don't give a flying feather |
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