@jmarsh Another report: with dynamic core, I can't run "setup.exe" of the game "screamer2", i.e. installing from CD fine, but then running of "setup.exe" from installed game fail with dynamic core, but works ok with the normal core. But running setup.exe with normal core, and then switch to the …

@jmarsh About those "colors" issues: TombRaider in the intro have them too: http://kas1e.mikendezign.com/aos4/dosbox/dosbox_badcolors_tombraider.jpg It's not that this bug happens everywhere, of course not, just a moment in 3 apps: hugi diskamg, and 2 games: 11 hours and now intro in tomb raider. …

@jmarsh Also, TombRaider fails to runs with Dynamic core on PPC. Just showing black screen (while with normal showing animation), and then when I hit "ESC" (when should have a menu), then with the dynamic core I have "ERROR: Could not allocate enough memory" and exit. While with "normal" core all …

@jmarsh Not sure if you in interest about as well, but I have to work win95 img and that works fine over core:normal, but once I set core:dynamic, then it fails to boot (just black screen after window95 loading screen disappear). I tested on win32 the same image, and it works on x86 with both normal …

@jmarsh Maybe you will be in interest: I made a short video on how with your PPC dynamic core I run some "greedy" stuff on my machine. I had to use 1920x1080 to capture all fine, so also use big scalers (like normal4x) which eat CPU, so in reality when full-screen modes are "original" things even …

What does it mean "some ppc box"? I just test it on amigaos4 which is powerpc (big-endian) cpu, if you in interest see: https://en.wikipedia.org/wiki/AmigaOS_4 By speed yeah, it seems that for you with opengl mode there of no big issues. Btw, i also noticed now, that swithing to/from window/ …

Do you mean fat_driver endian patch? I apply that one yep. But should it make any differences to FPS speed in whole DOSBox? Btw, what I also noticed, that I never reach 100% CPU loading, not with "normal", not with "dynamic". Maybe it somehow related to "pressure on the cache"? For example for doom …

Also, I noticed that in comparison with SDL1 build, with both core:normal, or core:dynamic, speed is better. With SDL2 build I see loosing of few fps.

Edit a bit previous post. Strange that on my setup (some ppc box) with vsync=false i have 50% speed drop. But i not sure if it because of SDL2 at all, probabaly just because of dosbox use opengl as blitter and update textures each frame.

Is that patch tested with the OpenGL output too? Aren't there issues with speed drop when used OpenGL output in DOSBox with that path applied? It seems as opengl in dosbox it just a blitter it mean that texutres updated everyframe, which mean in turn that there will be speed drop in compare with …

@jmarsh May I ask if you can share your other big-endian speed-improvement changes not-related to dynarec ? I mean in first post you say that "There are some other big-endian improvements that can be made that get it up to 4.0 but I haven't included them here as they aren't related to dynrec.", will …

I just applied the SDL2 patch on DOSBox (from https://www.vogons.org/viewtopic.php?p=803011#p803011 ) and so far all by freezes gone. So, I tried now Mortal Kombat 3 with and without jit: with your jit is start to be for sure MUCH better and fluid. Visually, on "core:normal" i have let's say 25-30 …

Yeah, it seems that DOSBox freezes just because of any reason. For example, right now it freezes even with "normal" core when I just run it another time, and type "mount c c". Another time it freezes in PCPBench too on exit, even when I use core:normal. So there indeed something with dosbox …

It seems that when I have set "fixed" number of CPU cycles nothing changes absolutely. I.e. if I set for example 5000 cycles, but use NORMAL or DYNAMIC core, nothing changes with pcnbench numbers, just the same. But, if I set cycles to "max", then there is definitely a difference. On my 2ghz CPU I …

Yes, you were right of course. That : cache_code_start_ptr=(Bit8u*)AllocVecTags(CACHE_TOTAL+CACHE_MAXSIZE+PAGESIZE_TEMP-1+PAGESIZE_TEMP, AVT_Type, MEMF_EXECUTABLE, TAG_DONE); + include of proto/exec.h makes it compiles, and make it run with core:dynamic without a crash ! Now, I am trying to find …

Ok, thanks, will ask our developers about. If things will go easy route , then probably all what we need its in cpu/core_dynrec/cache.h, in the cache_init(), add some amigaos4 ifdef, so cache_code_start_ptr= _not_malloc_but_something_for_memory_execute(CACHE_TOTAL+CACHE_MAXSIZE+PAGESIZE_TEMP-1+ …

@jmarsh Collected some more info. I have 2 PPC based machines which work under AmigaOS4, one of them is Pegasos2 with "true" ppc32 (i assume those ones were in some old PPC Macs too): Motorola MPC 7447/7457 running on 1ghz. And another machine is a more or less fresh one, AmigaONEx5000 which P5020 …

@jmarsh I tried to use your patch for AmigaOS4 (PPC32, BIG-Endian). All that I do now is: 1). download today's SVN DOSBox code 2). put your path to root of DOSBox directory and do "patch -p1 < ppc_dynrec.diff". All fine, no errors. 3). ./autogen.sh ./configure --build=x86_64 --host=ppc-amigaos -- …