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Re: Privateer 2 slow down in space

Posted on 2021-02-23, 06:31

Have you tried DOSBox-X with both the fixed cycle setting and a customized vmemdelay value other than 0 (such as -1 or 1000)? PCem by default would generally account for the video memory delay. Wing Commander for DOS has a similar issue, but there was a report that the vmemdelay option does not …

Re: IPX Access from Image

Posted on 2021-01-06, 17:28

Is there any demand for a client/server setup in the above emulators? Is that a viable option for real time games in emulation? Also, how many players are robustly supported by IPX in a peer-to-peer setup? I have not seen any (thorough) reports about it. I think that the play by email option in some …

Re: DOSBox-X branch

Posted on 2020-11-30, 20:47

I tested further. It occurs in PCem with the S3 card, but the flicker is less as expected from dosbox surface output and vesa_* machine types. Then I booted Win95 guest inside dosbox and ran it from a dos box. That showed flickering, too (in the game portion of the window). The evidence weighs …

Re: DOSBox-X branch

Posted on 2020-11-30, 19:31

Arthandas wrote on 2020-11-30, 18:03: ..it flickers just the same even with machine=vgaonly. May test with output=surface and machine=vesa_oldvbe in both dosbox SVN and -X. This assumes a Windows host for dosbox.

Re: DOSBox-X branch

Posted on 2020-11-28, 22:38

In that case, it seems that they deprecated the old API for a new API by renaming the functions. 😀 Seems that the native build for Big Sur has no major practical advantage yet over the Intel build in its emulation layer, although your native build is important to maintain even if that is the case.

Re: DOSBox-X branch

Posted on 2020-11-28, 21:49

These are fixes from recent SDL12 commits to provide audio compatibility with builds for macOS 11.0 ("Big Sur"): --- a/src/audio/macosx/SDL_coreaudio.c Sun Jul 05 22:11:10 2020 +0300 +++ b/src/audio/macosx/SDL_coreaudio.c Fri Jul 17 17:44:34 2020 -0400 @@ -193,7 +208,7 @@ return; } - result = …

Re: DOSBox-X branch

Posted on 2020-11-28, 21:00

Because the Apple M1 emulation will not mix and match between architectures, it may be worthwhile to improve the voodoo emulation, perhaps even add banshee. Here is also a 3dfx voodoo patch against previous code in dosbox-x for hints. There was a recent update to that code in dosbox-x that …

Re: DOSBox-X branch

Posted on 2020-11-28, 11:19

This typecast is optimized out by VS2019's compiler in Release builds, causing only the low 32 bits to be written in any case and a crash when executing the dynamically generated code. Here is another vs2019 issue with type conversion (probably also optimization related): https://developercommunity …

Re: pentium_fast \ cpu type?

Posted on 2020-10-26, 00:10

Another possible factor is the specific compiler's optimization of the code. It is possible for a compiler to have a better tested compilation of code for its default settings and - 1. have a bug in compiling for a non-default cpu type or 2. an expectation that the cpu can decode more than one …

Re: DOSBox-X branch

Posted on 2020-07-26, 02:22

This may help from writing outside the writecache with normal5x/6x: diff -rupN dosbox-orig/src/gui/render_scalers.cpp dosbox/src/gui/render_scalers.cpp --- dosbox-orig/src/gui/render_scalers.cpp +++ dosbox/src/gui/render_scalers.cpp @@ -30,9 +30,9 @@ Bit16u Scaler_ChangedLines[SCALER_MAXHEI Bitu …

Re: DOSBox-X branch

Posted on 2020-07-26, 02:17

Here is a change to consider in the case where a game searches for mode 0x068 and it is not found. It may lead to a reset to an unintended mode in that case. diff -rupN dosbox-orig//src/ints/int10_modes.cpp dosbox/src/ints/int10_modes.cpp --- dosbox-orig//src/ints/int10_modes.cpp +++ dosbox/src/ …

Re: DOSBox-X branch

Posted on 2020-07-26, 02:13

This may help from writing outside the writecache with normal5x/6x: diff -rupN dosbox-orig/src/gui/render_scalers.cpp dosbox/src/gui/render_scalers.cpp --- dosbox-orig/src/gui/render_scalers.cpp +++ dosbox/src/gui/render_scalers.cpp @@ -30,9 +30,9 @@ Bit16u Scaler_ChangedLines[SCALER_MAXHEI Bitu …

Re: DOSBox-X branch

Posted on 2020-07-26, 02:08

Here is a change to consider in the case where a game searches for mode 0x068 and it is not found. It may lead to a reset to an unintended mode in that case. diff -rupN dosbox-orig//src/ints/int10_modes.cpp dosbox/src/ints/int10_modes.cpp --- dosbox-orig//src/ints/int10_modes.cpp +++ dosbox/src/ints …

Re: DOSBox-X branch

Posted on 2020-07-26, 01:47

There is a nes emulator for dos that causes repeated logs of unhandled INT2F calls, they correspond to the enabling and disabled of critical sections in Win31. diff -rupN dosbox-orig/src/dos/dos_misc.cpp dosbox/src/dos/dos_misc.cpp --- dosbox-orig/src/dos/dos_misc.cpp +++ dosbox/src/dos/dos_misc.cpp …

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