Re: DOSBox debugger
Posted on 2023-02-27, 12:30
Maybe BPINT can be used.
Re: Several VESA video modes aren't working in DOS Box
Posted on 2023-02-21, 07:27
https://www.philscomputerlab.com/dos-benchmark-pack.html
Re: Early Cirrus Logic drivers for Windows 3.0
Posted on 2023-01-17, 17:45
QEMU Cirrus CL-GD5446 support is still broken in combination with Windows for Workgroups 3.x It works: https://virtuallyfun.com/2011/03/29/windoom-wing-win32s-on-windows-3-1-on-qemu/comment-page-1/#comment-319206 Although in qemu 7.0, the mouse cursor disappeared following this git commit: https:// …
Re: Software comparison
Posted on 2023-01-12, 22:49
It’s relatively painless to build a DJGPP cross-compiler on Linux, which is then much more painless to use.
Re: Software comparison
Posted on 2023-01-12, 21:57
It is itself a poor port of all kinds of Unix stuff to DOS, so you are much better off just running it natively on Linux (or Windows). where "it" references "stuff" ;). The only two things that come to mind that where first-class DJGPP runnables, are Quake and early DOSDoom, both of which are games …
Re: Software comparison
Posted on 2023-01-12, 17:21
Gmlb256 wrote on 2023-01-12, 16:21: DJGPP is a prime example, never had proper support outside of DOS despite cross-compiling being available. How so? It is itself a poor port of all kinds of Unix stuff to DOS, so you are much better off just running it natively on Linux (or Windows).
Re: Clone WinXP using file based copy.
Posted on 2023-01-09, 17:44
Cool approach, thanks for sharing!
Re: Duke3D Atomic Edition BUILD.EXE
Posted on 2022-12-20, 18:25
But why do you even want to run build.exe? Wasn’t the game executable called duke3d.exe?
Re: DOSBox-X branch
Posted on 2022-12-20, 08:34
That's dumb. That code is never compiled/used for 64-bit x86, so the situation that it's trying to prevent can never occur. Also, in FreeBSD, from where the patch was taken, as per the pull request description, it uses "a" (the eax register). I cannot find any discussion about this. This seems to …
Re: OT: Help needed w/ optimizing lz77 compressor
Posted on 2022-12-03, 12:17
What’s the purpose of this nit-picking? Every desktop CPU that runs Win11 is likely in the same performance range, by an order of magnitude. A few minutes for less than 1MB is so slow that I agree it is embarrassingly slow ;). I just tried gzip on a 4MB file, and it took 0.1 seconds. I would have a …
Re: OT: Help needed w/ optimizing lz77 compressor
Posted on 2022-12-02, 16:12
How slow is too slow? How does your code compare to gzip, speed-wise?
Re: Best Windows 95 Version For 486 66MHz
Posted on 2022-12-01, 13:48
I got a Pentium 66 in 1995, and it had 16MB of RAM, which was considered quite luxurious for home use at that time, so I would be very surprised about 32MB in a 486.
Re: Error [35] unexpected interrupt=004F in DOS4GW.EXE. In dos4gw games like FIFA 97 and Duke Nukem 3D
Posted on 2022-12-01, 12:01
Just run dos4gw and give the exe as the argument (I think .exe is not even required): Copy code to clipboard 1 dos4gw duke3d
Re: Error [35] unexpected interrupt=004F in DOS4GW.EXE. In dos4gw games like FIFA 97 and Duke Nukem 3D
Posted on 2022-11-29, 16:38
Namrok wrote on 2022-11-29, 15:55: I believe you can always use a newer version of DOS4GW. True. And you should also be able to run it with DOS32A.
Re: Error [35] unexpected interrupt=004F in DOS4GW.EXE. In dos4gw games like FIFA 97 and Duke Nukem 3D
Posted on 2022-11-29, 15:18
This looks very curious. Do you have any weird network drivers installed? Try without network. Try without everything (smartdrv, emm386, himem). Does DOOM work?
Re: DOS C interface to asm function?
Posted on 2022-11-25, 07:52
Actually just declaring the function and calling it from somewhere and looking at the resulting assembler code should give you everything you need. Most C compilers provide an option for ASM output, eg. "gcc -S" Yes, but disassembly is often more readable, at least to me, because it is not littered …
Re: DOS C interface to asm function?
Posted on 2022-11-24, 16:24
Just write the function in C, then disassemble it, and you will be able to figure out which parameters go where from it. If not, then I question your ability to write the entire function in assembler in the first place.
Re: REP + String instructions behavior
Posted on 2022-11-17, 16:58
The ISR needs to preserve the registers, otherwise it is just broken. And yes, of course it can modify the running state by changing registers. The wording might be a bit unfortunate, but EIP definitely needs to point at the REP prefix. The term "the string instruction" must definitely be meant to …
Re: 15 FPS Doom 2 with Pentium MMX 200
Posted on 2022-10-26, 08:55
Re: Windows 2000 abnormal behavior
Posted on 2022-09-14, 11:31
So it accesses the floppy drive when it’s disabled in device manager? This is indeed strange.
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