VOGONS

Search

Common searches

Search results

Display options

Display options

Re: DOSBox-X branch

Posted on 2022-06-12, 01:11

Is it me or Disney Sound Source is broken again? Coktel's games I tried that support Intersound MDO clone don't work anymore at least (it works with latest svn build like the EmuCR one). Please can somebody add this problem (and broken Ps1 audio card too) to Dosbox-x github? I registered some time …

Re: DOSBox-X branch

Posted on 2022-06-05, 19:01

Read the recent commit on the BOUND instruction. Searched further and noted a post on its implementation. Seems there is a distinct 80188 cpu type. "Technically, x86 does have hardware bounds-checking: the BOUND instruction was introduced in 1982 in the Intel 80188 (as well as the Intel 286 and …

Re: DOSBox-X branch

Posted on 2022-05-03, 18:18

Hi, I hope this is a good place to post this question. With 'standard' Dosbox and the ECE version, Hercules mode allows me to run old Accolade racing games, notably Grand Prix Circuit. DosBox-x is superior and I prefer to use it, but the game won't launch. You go back to dos right after selecting …

Re: DOSBox-X branch

Posted on 2022-04-15, 18:19

Thanks for the DDK hint, indeed I might find a clue here. > Are you doing I/O access directly or are you doing the I/O out as IN/OUT instructions where Windows 3.1 can see it? I don’t understand - I have extended port 0x60 and 0x64 emulation. I mean does the interrupt handler use the IN/OUT …

Re: DOSBox-X branch

Posted on 2022-04-15, 16:47

The only known problem with DOSBox-X is an unresolved issue where the PS/2 mouse emulation is not always able to keep interrupts working under Windows 3.1 if you start a DOS VM in any way, which apparently includes any compile or build steps in Microsoft Visual C++.

Re: DOSBox-X branch

Posted on 2022-04-15, 16:35

- PS/2 AUX port emulation. This enables DOS programs and OSes to work that don't use INT 33h and communicate directly with the PS/2 mouse connected to the keyboard controllers "AUX" port. This code is wired in so that INT 33h emulation is enabled by default, but shut down the instant the "reset" …

Re: DOSBox-X branch

Posted on 2022-04-09, 00:27

Speaking of old SVGA emulation, Anyone know how to fix the yellow tinting screen when using SDL2 build of DOSBox-X? I get that whenever I want to use more than 256 colors in Windows. Run DOSBox-X with --debug or specify debug level logging. It should tell you what SDL/SDL2 returned when it asked …

Re: DOSBox-X branch

Posted on 2022-03-28, 08:21

I'm posting this here because while working on S3 and S3 ViRGE emulation I found something about the Trio64 emulation that SVN might be interested in. In the command word to draw a line, there is a bit that controls whether the line includes or omits the last pixel. The code as it was before my …

Re: DOSBox-X branch

Posted on 2022-02-27, 16:16

I have a question for anyone with a S3 ViRGE PCI card and a Windows 3.1/95/98 install: When you go into Display properties and select video mode, does the dropdown say "Truecolor (24-bit)" or "Truecolor (32-bit)"? Or is "Truecolor (32-bit)" never an option anywhere with ViRGE cards? S3 ViRGE …

Re: DOSBox-X branch

Posted on 2022-02-25, 17:08

https://sourceforge.net/p/dosbox/code-0/4446/ Creative Artist has the same "basement" screen that Creative Writer does. A fix was committed for those awhile ago. Still though, the DOSBox-X implementation (srcdata&readmask)==readmask seems to work just as well and it better follows S3 documentation. …

Re: DOSBox-X branch

Posted on 2022-02-25, 16:09

I just made a fix to S3 accelerated XGA emulation that DOSBox SVN might be interested in. There's a case where a rectangular pattern blit can use display memory as a pattern source to select foreground and background. DOSBox SVN, and that code inherited by DOSBox-X, make an educated guess by …

Re: DOSBox-X branch

Posted on 2022-01-17, 22:06

Another question: am I supposed to use latest dosbox-x with internal mt32 emulation or external munt driver? I noticed that using external one emulation is better: all the games I tried seem to play mt32 tunes at lower (wrong) pitch if I use the internal one. Either is fine, but if the pitch is …

Re: DOSBox-X branch

Posted on 2022-01-17, 04:02

Myloch wrote on 2022-01-17, 02:31: Is it me or ps1 audiocard emulation is totally broken in latest dosbox-x build(s)? I don't have any test cases for PS/1 audio card emulation, so if that code has bitrotted, then it needs to be noted in the issue tracker.

Re: DOSBox-X branch

Posted on 2022-01-12, 18:05

hello i have a small question. i want to run the game Sideline with dosbox-x http://sideline.ghegs.com/ the game needs jemmex to run but i cannot get jemmex to work with dosbox-x when i disable ems and start to run jemms with "jemmex noems load" i get the message: "xmm already installed" seems a …

Re: DOSBox-X branch

Posted on 2021-11-01, 01:01

There is an interesting list of differences between the 8086 and 386 cpu: https://pdos.csail.mit.edu/6.828/2008/readings/i386/s14_07.htm Examples: "The 80386 can generate the largest negative number as a quotient for the IDIV instruction. The 8086/8088 causes exception zero instead." "The setting …

Re: DOSBox-X branch

Posted on 2021-11-01, 00:59

I can confirm here on my Linux development system with GCC that modern processors can also handle IDIV without faulting with a result of 0x80000000 # x86_64 gcc -o idiv idiv.c # i686 gcc -m32 -o idiv idiv.c #include #include int main() { volatile int32_t r; __asm__ __volatile__ ( "mov $-2,%%edx\n" " …

Re: DOSBox-X branch

Posted on 2021-10-31, 05:37

If I'm reading this correctly, what DOSBox-X needs to do on divide by zero is return to the following instruction if cputype=8086, and the faulting instruction otherwise? Does the 80186 also return to the faulting instruction?

Re: DOSBox-X branch

Posted on 2021-10-05, 15:23

Yeah, they match. Games I am testing: Need For Speed II SE (available on myabandonware), FIFA 98 Road To World Cup, FIFA 99. They run fine without sound. When there is a sb16 or sb16vibra, chaos ensues. For example, Dosbox-x crashed when I simply moved the Windows volume slider to max. When running …

Page 2 of 45

Go to top of page Go to top of page
Close window
Close window