Homebrew Running MS-DOS 6.22 on 3DS

Mnecraft368

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Hi,

Im sure some of you saw you could run DosBox on 3DS using retroarch.
This let us run things like Windows 1/2/3.1/95/98 etc (all non NT)

So i was messing with dosbox on pc and got MS-DOS to work on DosBox (Dos-Seption) when i decided to retry windows 95 on 3ds, it failed cos my sd card is tiny af. So then i looked at my MS-DOS img and thought of a bright idea :)

So yeah I got MS-DOS 6.22 running on a 3DS. You cant do anything with the lack of a keyboard so its just a POC. It runs fine execpt it takes a few momments to check HIMEM (HIMEM is checking extended memory) but it gets to the prompt perfectly fine. If i really wanted i could add cmds to autoexec.bat to maybe run a dos application (or virus couph couph LSD).

Anyway enouph chatting, here is a screenie :)
uUluKFN.png

So I hope you enjoyed reading cause im pretty sure nobody tried this yet.
Enjoy :)

I might release a download for the .bat file to run this, and the retroarch version made by shutterbug (libretro one doesnt work currently) BUT i will not release an MS-DOS.img file! Buy the disketes and then look up a tutorial of running MS-DOS in DosBox, you should then have an img file with dos installed to it, use this with dosbox 3ds and the real dosbox on pc/everything else
 
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D

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To emulate the keyboard, Simply set the User 1 Device Type to "Mapper" in the 'Controls' tab, and set the desired keyboard keys to the desired buttons in the second-half of the 'Options' tab (the half where there are "RetroPad" values you can set).
You can see the 'Controls' and 'Options' tabs after you pause emulation.

I'm very suprised not many people know about this!
 

Mnecraft368

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ok ill try that

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To emulate the keyboard, Simply set the User 1 Device Type to "Mapper" in the 'Controls' tab, and set the desired keyboard keys to the desired buttons in the second-half of the 'Options' tab (the half where there are "RetroPad" values you can set).
You can see the 'Controls' and 'Options' tabs after you pause emulation.

I'm very suprised not many people know about this!
im confused, there isnt any "Mapper" option in the user 1 input settings.
 

Mnecraft368

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Yes there is. You sure you're looking in the right place?

View attachment 71861
this doesnt help. im using a 3ds sir (thought it was psvita sorry)

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this doesnt help. im using a 3ds sir
does it help im not using the latest "official" one.

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sir im not using the latest version let me download
 

Mnecraft368

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What? This has nothing to do with the Vita. :lol: That was a screenshot of me in the 'Controls' tab after I paused emulation (using the button combo)


Then which one are you using?
the download from this: http://gbatemp.net/threads/windows-on-the-new-3ds.407756/

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libretro one didnt do sh!t when i tried it at first

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ok i think the latest might work this time! *crosses fingers* :huh:

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yet again, if i try open the batch file it just goes to a menu saying "No Items."
 

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uUluKFN.png
Code:
[SPOILER="Screenshot"]
[IMG]http://i.imgur.com/uUluKFN.png[/IMG]
[/SPOILER]
Don't thank me
 

Mnecraft368

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i will thank you for letting me notify voxel instead of constantly double posting.
ok so i downloaded the latest thing and running the batch file says "No Items" after i click on it. This is the same thing as last time so if you can help me voxel then pls do cos idk how to use retro arch

--------------------- MERGED ---------------------------

attempt to fix #1 in progress
failed
GOD DAMMIT
ok guys libretro_dosbox sucks it doesnt work no matter what
(starts new help thread)
 
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voxel pls help u got retroarch setup how af does it work???
The problem is, I don't believe that either Windows 95/98 or MS-DOS work in the latest retroarch builds. Shutterbug2000's fork must have not been implemented into the latest builds yet, so there's nothing you can really do except continue using his older builds with no input, or wait for developers to add in support for Win95/58 and MS-DOS into the latest builds...
 

Mnecraft368

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The problem is, I don't believe that either Windows 95/98 or MS-DOS work in the latest retroarch builds. Shutterbug2000's fork must have not been implemented into the latest builds yet, so there's nothing you can really do except continue using his older builds with no input, or wait for developers to add in support for Win95/58 and MS-DOS...
then how do you get to the dosbox prompt? i can only get the green start window open, i cant get the dosbox prompt AT ALL
 
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then how do you get to the dosbox prompt? i can only get the green start window open, i cant get the dosbox prompt AT ALL
Because the "Mapper" input type simply doesn't exist in Shutterbug's build. (The one you were using that MS-DOS managed to work on.)
 

Mnecraft368

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Because the "Mapper" input type simply doesn't exist in Shutterbug's build. (The one you were using that MS-DOS managed to work on.)
um im confused what are you talking about? in the current lastest build if i try run a .bat file it will simply do nothing, i cant get to even the help box that dosbox shows up (blue thing)
P.S. dosbox itself can boot .img files so it should work fine, i belive it has been done before

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im going to get a quick video up to show it off then I have to do homework/sleep :(
 
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um im confused what are you talking about? in the current lastest build if i try run a .bat file it will simply do nothing, i cant get to even the help box that dosbox shows up (blue thing)
P.S. dosbox itself can boot .img files so it should work fine, i belive it has been done before
Sorry, I misunderstood your post, that's why it didn't make sense. :wink:

In newer Retroarch builds, the .img files do boot, but just end up crashing during bootup and don't fully work at all.
I couldn't tell you exactly why batch files don't do anything; possibly due to it still not being implemented.

Don't forget that Shutterbug forked the DOSBox retroarch project with the intention of solely getting Windows OSs working, therefore he would've had to add some extra things to get the Windows boot stuff fully working, and that's maybe why batch files work better (if, at all) in the older builds.
 

Mnecraft368

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Sorry, I misunderstood your post, that's why it didn't make sense. :wink:

In newer Retroarch builds, the .img files do boot, but just end up crashing during bootup and don't fully work at all.
I couldn't tell you exactly why batch files don't do anything; possibly due to it still not being implemented.

Don't forget that Shutterbug forked the DOSBox retroarch project with the intention of solely getting Windows OSs working, therefore he would've had to add some extra things to get the Windows boot stuff fully working, and that's maybe why batch files work better (if, at all) in the older builds.
then how do i get to the dosbox prompt?
 

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