Search found 642 matches

by ComputerHunter
Mon Sep 21, 2020 1:54 am
Forum: DOS to Windows 3.xx
Topic: Microsoft Windows 1.0 Development Release #5 research thread
Replies: 77
Views: 23697

Re: Microsoft Windows 1.0 Development Release #5 research thread

Early .SYM Documentation This isn't really DR5 specific but since I've only reversed the first 2 major versions of the format (2.08-3.10), this thread seems to be the best place. As far as I know, there is only one .SYM file in DR5 - MB.SYM. MB (Module Boot) is the old Windows loader that loads KER...
by ComputerHunter
Mon Sep 14, 2020 4:00 am
Forum: DOS to Windows 3.xx
Topic: Generic MS-DOS 2.11 for Windows 1.x
Replies: 7
Views: 539

Re: Generic MS-DOS 2.11 for Windows 1.x

I managed to build the entire source tree before but it does not produce identical results because the source code was modified by TeleVideo. I once worked on fixing the code to produce binary-identical files but gave up after getting to COMMAND.COM (or MSDOS.SYS, can't remember). Basically have to ...
by ComputerHunter
Sat Sep 05, 2020 6:36 am
Forum: DOS to Windows 3.xx
Topic: Has anyone successfully pried the BDOS out of 86-DOS 1.0?
Replies: 14
Views: 2261

Re: Has anyone successfully pried the BDOS out of 86-DOS 1.0?

Well, file extraction should be pretty easy, considering it uses 32-byte directory entries and FAT12. DiskExplorer will have no troubles reading the disk as long as the correct profile is used (86-DOS and MS-DOS disks are different). Adding a BPB sometimes does not work well because many tools assum...
by ComputerHunter
Sat Sep 05, 2020 1:25 am
Forum: DOS to Windows 3.xx
Topic: Has anyone successfully pried the BDOS out of 86-DOS 1.0?
Replies: 14
Views: 2261

Re: Has anyone successfully pried the BDOS out of 86-DOS 1.0?

There is no way you can make MS-DOS 1.25 read 86-DOS 1.x disks or vice versa. DOS 1.x did not support BPB and adding one will destroy the (128-byte) boot sector. Of course it is possible to load the image with tools like WinImage after adding a BPB but the disk will never boot again. 86-DOS disks ar...
by ComputerHunter
Thu Sep 03, 2020 12:36 pm
Forum: DOS to Windows 3.xx
Topic: Has anyone successfully pried the BDOS out of 86-DOS 1.0?
Replies: 14
Views: 2261

Re: Has anyone successfully pried the BDOS out of 86-DOS 1.0?

In the early days, DOS was made up of 4 parts, boot sector (BOOT.ASM), DOS BIOS (DOSIO.ASM), DOS kernel (86DOS.ASM) and Command Interpreter (COMMAND.ASM). The boot sector and DOS kernel used to reside in the reserved tracks before FAT (prior to 86-DOS 1.10) but since more functionalities were added ...
by ComputerHunter
Mon Aug 31, 2020 9:18 am
Forum: Windows 9x, ME
Topic: How can I get the Windows 95 GUI on a floppy disk?
Replies: 7
Views: 562

Re: How can I get the Windows 95 GUI on a floppy disk?

You can take out all unneeded files. A good idea to keep the Windows Trinity (GDI, KERNEL and USER), some drivers and config files. Shell doesn't have to be Program Manager so you can take that one out as well. I suggesting working with the mini Windows 3.1 from various Windows 9x discs.
by ComputerHunter
Mon Aug 31, 2020 9:05 am
Forum: DOS to Windows 3.xx
Topic: Windows 1.x - overlapping windows
Replies: 5
Views: 628

Re: Windows 1.x - overlapping windows

How did you figure this out? Experimentation? Yeah, failed a few times before I got it right. I originally thought modifying the window style alone is enough but it turned out that some parameters also needs to be modified. If I recall correctly, the creator of ToastyTech has said this but in less ...
by ComputerHunter
Sat Aug 29, 2020 12:39 pm
Forum: DOS to Windows 3.xx
Topic: Windows 1.x - overlapping windows
Replies: 5
Views: 628

Windows 1.x - overlapping windows

Since Windows 1.x did not have overlapping window support, most programs were forced to use "tiled" windows. In order to make an overlapping window, the developer must use WS_POPUP instead of WS_TILED. Of course WS_POPUP creates a popup window that will be on top of all other windows and most applic...
by ComputerHunter
Sat Aug 29, 2020 9:48 am
Forum: DOS to Windows 3.xx
Topic: Generic MS-DOS 2.11 for Windows 1.x
Replies: 7
Views: 539

Re: Generic MS-DOS 2.11 for Windows 1.x

Since Microsoft did not ship any good OEM Format modules (the generic one can only clear FAT and zero root directory) with the OAK, I have unlinked FORMAT.COM (from my generic MS-DOS 2.11) into 3 object files to help you with customizing DOS. You can download them here . I have of course fully rever...
by ComputerHunter
Thu Aug 27, 2020 1:29 pm
Forum: Windows 9x, ME
Topic: Debug Symbols
Replies: 5
Views: 372

Re: Debug Symbols

.SYM appears to be the early debug symbols used by SYMDEB. You can convert a .MAP generated by the Object Linker into a .SYM using MAPSYM. I don't believe the format is currently documented anywhere but it is pretty easy to work out the address and function names. It should be sufficient for manuall...
by ComputerHunter
Tue Aug 25, 2020 10:17 pm
Forum: DOS to Windows 3.xx
Topic: MS-DOS 2.11 Toshiba OEM
Replies: 3
Views: 298

Re: MS-DOS 2.11 Toshiba OEM

Is it possible to install a MS-DOS version that does not work and upload the virtual hard drive?
by ComputerHunter
Tue Aug 25, 2020 10:15 pm
Forum: DOS to Windows 3.xx
Topic: Generic MS-DOS 2.11 for Windows 1.x
Replies: 7
Views: 539

Re: Generic MS-DOS 2.11 for Windows 1.x

Then something screwed up on your side. It works perfectly fine on VMware for me (I used it for my Windows 1.0 Alpha Release VM). If you don't see the invalid disk message, then probably something happened before it even got to the boot sector (or everything worked but DOS BIOS screwed up). Hmm? Do ...
by ComputerHunter
Tue Aug 25, 2020 2:02 pm
Forum: DOS to Windows 3.xx
Topic: Generic MS-DOS 2.11 for Windows 1.x
Replies: 7
Views: 539

Generic MS-DOS 2.11 for Windows 1.x

Since everyone suddenly became interested in installing early Windows 1.x pre-releases again recently, I have seen a number of people getting confused about which MS-DOS 2.x OEM to choose. I can see that most people are use the AT&T or Toshiba OEM on VMware for no real reason apart from "it works". ...
by ComputerHunter
Fri Aug 21, 2020 10:10 am
Forum: DOS to Windows 3.xx
Topic: Installing Windows 1.0 Alpha
Replies: 5
Views: 430

Re: Installing Windows 1.0 Alpha

Because IBM PC-DOS is an OEM release itself. It was the MS-DOS source compiled with the IBM switch on and if I recall correctly, it handles the CLS command and switch character differently (of course branding as well). I do not have much of the MS-DOS 2.11 (IBM PC-DOS 2.10) OAK but I do have the ent...
by ComputerHunter
Fri Aug 21, 2020 9:06 am
Forum: DOS to Windows 3.xx
Topic: Installing Windows 1.0 Alpha
Replies: 5
Views: 430

Re: Installing Windows 1.0 Alpha

When there is something pre-made, use it please. Basically all versions of IBM or MS-DOS 2.x will work. Alpha Release does perform a complex-ish check but can sometimes be bypassed by patching the Windows kernel. For you information, according to all the analysis of Windows 1.x disks I have done, Mi...
by ComputerHunter
Thu Aug 20, 2020 10:00 am
Forum: DOS to Windows 3.xx
Topic: Microsoft Windows 1.0 Development Release #5 research thread
Replies: 77
Views: 23697

Re: Microsoft Windows 1.0 Development Release #5 research thread

Introducing the first successful Windows 1.0 DR5 dark mode patch I originally patched GDI.EXE (inverted the solid colors) and WINDOWS.EXE but there weren't enough space for me to use white text so it looked awful. Inverting the text colors and bitmap patterns by patching DISPLAY.EXE gives a relativ...
by ComputerHunter
Tue Aug 11, 2020 10:17 pm
Forum: Download Requests/Offers
Topic: [REQUEST] Various rare Windows wallpapers
Replies: 20
Views: 1244

Re: [REQUEST] Various rare Windows wallpapers

Why not use this? https://mega.nz/file/lR00XIgB#sV4c11C4I ... 3Y_owGavlY

It also includes all the screensaver resources as well. There is an information HTML that tells you about the details of every picture.
by ComputerHunter
Tue Aug 11, 2020 8:51 am
Forum: Windows 2000, NT, XP
Topic: How is one supposed to run IA-64 versions of Windows on an x64 system?
Replies: 8
Views: 754

Re: How is one supposed to run IA-64 versions of Windows on an x64 system?

SKI developed by Hewlett-Packard is an IA-64 instruction set simulator and probably the best you can get. It is not a full system emulator so useless if you want to run IA-64 stuff. Prashant Vaibhav worked on IA-64 emulation roughly 10 years ago but I don't think the project survived for long. Full ...
by ComputerHunter
Fri Aug 07, 2020 8:25 am
Forum: Download Requests/Offers
Topic: Windows NT 3.1 Beta 2 Alpha CPU ISO
Replies: 17
Views: 973

Re: Windows NT 3.1 Beta 2 Alpha CPU ISO

Why not just share the ISO? It is a beta so (hopefully) it will get added to the FTP as the guidelines stated ISOs are fine for betas. ISOs converted to MDF/MDS does not make a difference so probably not the best option.
by ComputerHunter
Wed Aug 05, 2020 11:48 am
Forum: Download Requests/Offers
Topic: [Offer] Windows 95 build 818
Replies: 7
Views: 941

Re: [Offer] Windows 95 build 818

Wouldn't it be better to use CDIMAGE?
Image
by ComputerHunter
Mon Aug 03, 2020 1:16 pm
Forum: DOS to Windows 3.xx
Topic: Compiling apps for Windows 1.0 Alpha Release, Beta Release and Premiere Edition
Replies: 3
Views: 624

Re: Compiling apps for Windows 1.0 Alpha Release, Beta Release and Premiere Edition

Since both Alpha Release and Beta Release supported the use of medium model libraries, I decided to add some patched medium libraries to the toolchains. I have tested them on both Alpha Release and Beta Release so they should be working. I have already updated the links. I noticed that the Beta Rele...
by ComputerHunter
Sat Aug 01, 2020 1:22 pm
Forum: DOS to Windows 3.xx
Topic: Compiling apps for Windows 1.0 Alpha Release, Beta Release and Premiere Edition
Replies: 3
Views: 624

Compiling apps for Windows 1.0 Alpha Release, Beta Release and Premiere Edition

After months of testing and researching, we can finally compile apps for Windows 1.0 Alpha Release, Beta Release and Premiere Edition! Windows 1.0 Alpha Release came with all the Windows libraries, development utilities and sample source code but because we don't have the Microsoft C Compiler 3.00 W...
by ComputerHunter
Tue Jul 28, 2020 10:14 am
Forum: DOS to Windows 3.xx
Topic: List of Windows Versions
Replies: 8
Views: 912

Re: List of Windows Versions

My list for major Windows 1.0 pre-release builds (a lot of guess work): Development Release #1 - 05/29/1984 Development Release #2 - 06/25/1984 Development Release #3 - 07/??/1984 Development Release #4 - 09/06/1984 Development Release #5 - 10/31/1984 Alpha Release - 01/31/1985 Beta Release - 05/08/...
by ComputerHunter
Fri Jul 24, 2020 11:00 am
Forum: General Discussion
Topic: Is x86 dying?
Replies: 20
Views: 1340

Re: Is x86 dying?

What do you mean by x86? The original 8086 from 1978? x86-32? x86-64? I think it will take a while for the entire x86 family to die. 16-bit ones are pretty much dead now, 32-bit ones are still alive and maybe will survive for a few more years.
by ComputerHunter
Tue Jul 21, 2020 12:46 pm
Forum: Windows Vista, 7, 8.x, 10
Topic: Boot screen location in Windows 8, 8.1 and 10
Replies: 8
Views: 775

Re: Boot screen location in Windows 8, 8.1 and 10

If I recall correctly, some older versions of Windows stores all logos in a (??) WIM file and the WIM file gets stored as a resource in one of the DLLs. I could be completely wrong though.