Porting OpenEmu

[emufan]

i try to fix the P96Base this way - example taken from aminet, which uses Picasso96Api.h

...
struct Library	*P96Base;

static int openlibs (void) {
P96Base = OpenLibrary("Picasso96API.library", 0);
	if (!P96Base) return FALSE;
};

static int openlibs (void);

int main(int argc, char *argv[])
{
  int retval;
  t_sr test;

	if (!openlibs()) {
		printf("cannot open Picasso96API.library");
		return ("lib error");
	}
...

it does build the binary, does load graphics, dos .. library but not Picasso96API.library (snoopdos)
gives a HALT3 in winuae which does freeze :/

#1) hmm, -lauto should do the trick,
*hmmm*

m68k-amigaos-gcc.exe -o AmiGeneratorT.exe *.o  -m68040 -noixemul -lm -lauto -Wall \
-fomit-frame-pointer -I. -Ihdr -Icpu68k -Icmz80 -Iym2612 -Isn76496 -D__USE_INLINE__
/opt/m68k-amigaos/lib/gcc/m68k-amigaos/6.3.1b/../../../../m68k-amigaos/bin/ld:
cannot find -lauto

without -lauto it cannot find P96Base :/
#2) damn, there is no libauto with gcc6,
AmiDevCpp does include libauto: /AmiDevCpp/usr/local/amiga/m68k-amigaos/lib/libauto.a
but it has problems with the source code

[emufan]

Originally Posted by nobody

Not so interesting system but maybe this could be ported too, I don't know if it exists already.

http://dcmo5.free.fr/v11/dcmo5v11en.html

zoned: dcmo5-68k-WIP.lha
zoned: dcto9p-68k-WIP.lha - Thomson TO9+ emulator

[nobody]

I tried them and sometimes they open a window and stuck or switch to full screen and crash with guru meditation (Amiga OS 3.9).

[emufan]

Originally Posted by nobody

I tried them and sometimes they open a window and stuck or switch to full screen and crash with guru meditation (Amiga OS 3.9).

hmm, did work here on wb/kick 3.1 030/882 winuae.

#1) one thing i dont understand, i build with -m68040 -noixemul -O2,
and i have to link in math lib (_ceil) , so i allways use -lm
is this correct, or do we need -lm881 ( which is not found ) or something?


#2) I rebuild dcto9p and dcmo5 with AmiDevCpp - just redownload from the zone
030 and 040 builds

[nobody]

After i installed AHI it worked this way (030 with and without FPU)

[emufan]

ah, good news - thnx testing

[matthey]

Originally Posted by emufan

#1) one thing i dont understand, i build with -m68040 -noixemul -O2,
and i have to link in math lib (_ceil) , so i allways use -lm
is this correct, or do we need -lm881 ( which is not found ) or something?

-lm is for GCC using direct FPU instructions

-lm881, -lm040, -lm060 is for vbcc direct FPU instructions
-lmieee is for vbcc using C= math libraries

[emufan]

Originally Posted by matthey

-lm is for GCC using direct FPU instructions

-lm881, -lm040, -lm060 is for vbcc direct FPU instructions
-lmieee is for vbcc using C= math libraries

thanks for that info

[emufan]

Vectrex 68k SDL RTG emulator - vecx
with sound and overlay support.
from shell/cli: vecx rom_name overlay_name

without an option it uses rom.dat, rom and overlay name are optional.

overlay image jpg or png, but somehow they are not transparent,
maybe dependend on screen depth ?!
resize window if overlay is not visible.

zoned: vecx-68k-WIP.lha

i think finaly an emulator which does run full speed.

[xboxown]

You are right. But what is the controller for this emulator (for the vecx-68k-wip) I mean? the other emulators simply do not work.

Hey emufan while we are discussing about emulators how difficult is it to port this? https://sourceforge.net/p/bluemsx/co...k/blueMSX/Src/

[nobody]

The only way i see for Megadrive emulation to run full speed is to write from the ground and use Amiga CPU (68030+) and AGA. But people with Vampire card could probably run these ports fine.

[emufan]

Originally Posted by xboxown

You are right. But what is the controller for this emulator (for the vecx-68k-wip) I mean? the other emulators simply do not work.

oh, sorry: default keys: a s d f + cursor keys || ESC will quit emulator

Hey emufan while we are discussing about emulators how difficult is it to port this? https://sourceforge.net/p/bluemsx/co...k/blueMSX/Src/

thats one nice emulator on windows machines. i'll have a look.
#1) i guess impossible, it does use OpenGL stuff.

In file included from ../../../Src/Sdl/bluemsxlite.c:59:0:
/cygdrive/d/SDL/include/SDL/SDL_opengl.h:46:60: fatal error:
GL/gl.h: No such file or directory

Originally Posted by nobody

The only way i see for Megadrive emulation to run full speed is to write from the ground and use Amiga CPU (68030+) and AGA. But people with Vampire card could probably run these ports fine.

thats beyond my abilities. it's much easier to convince some compiler to build 68k binaries from exisiting sources

[grelbfarlk]

Emufan could you go over again the libretro/retroarch stuff again? I read a little bit about it today and it's interesting they say they try to keep stuff C89 compatible.

[emufan]

Also what did you do to get a configure file out of dgen?

configure was included in the source archive.
I run it on my win7 box, using the toolchain of AmiDevCPP ( gcc 3.4.0 )
open a dosbox (cmd) cd to 'AmiDevCPP/bin' starting bash.exe
and adding locations of the gcc to $PATH.

export PATH=/cygdrive/d/AmiDevCpp/usr/local/amiga/bin:/cygdrive/d/AmiDevCpp/bin:$PATH

next i run

./configure --host=m68k-amigaos --disable-hqx --disable-scale2x

in the dgen src directory.

Originally Posted by grelbfarlk

Emufan could you go over again the libretro/retroarch stuff again? I read a little bit about it today and it's interesting they say they try to keep stuff C89 compatible.

hmm, I'll have a look

#1)
bad start:

$ CC=m68k-amigaos-gcc.exe CFLAGS="-ISDL/include" LDFLAGS="-LSDL/lib" \
./configure --host=m68k-amigaos --disable-dynamic
Checking operating system ... Cygwin
Checking for suitable working C compiler ... m68k-amigaos-gcc.exe does not work
Error: Cannot proceed without a working C compiler.

*hmm*

#2) there are some config files in retroarch/qb, checking for different systems,
there is no "m68k-amigaos" , so we have to poke that into them

#3) with a bit of cheating in retroarch/qb/qb.comp.sh - it does a test compile, and sets a value,
cc_works=1 and cxx_works=1 - so the script continued:

 ./configure --host=m68k-amigaos
Checking operating system ... Cygwin
Checking for suitable working C compiler ... m68k-amigaos-gcc.exe works
Checking for suitable working C++ compiler ... m68k-amigaos-g++.exe works
Checking for pkg-config ... none
Warning: pkg-config not found, package checks will fail.
Checking for availability of switch -std=gnu99 in m68k-amigaos-gcc.exe ... yes
Checking for availability of switch -Wno-unused-result in m68k-amigaos-gcc.exe ... yes
Checking for availability of switch -Wno-unused-variable in m68k-amigaos-gcc.exe ... yes
Error: Cygwin is not a supported platform.
See https://bot.libretro.com/docs/compilation/windows/

#4) some editing in retroarch/qb/config.libs.sh - disable Cygwin check, the configure finishes.
starting make, 2nd source file already gives errors:

In file included from frontend/frontend.c:25:0:
./libretro-common/include/retro_timers.h: In function ‘retro_sleep’:
./libretro-common/include/retro_timers.h:103:11: error:
            variable ‘tv’ has initializer but incomplete type
    struct timespec tv = {0};
           ^~~~~~~~

this was all done with gcc6, maybe an older gcc will work better. will try later

[grelbfarlk]

Yeah sorry I didn't see configure in the git but it was in the tar.gz. Ran that, seems to like my opengl version at least.

Originally Posted by emufan

hmm, I'll have a look

configure was included in the source archive.
I run it on my win7 box, using the toolchain of AmiDevCPP ( gcc 3.4.0 )
open a dosbox (cmd) cd to 'AmiDevCPP/bin' starting bash.exe
and adding locations of the gcc to $PATH.

export PATH=/cygdrive/d/AmiDevCpp/usr/local/amiga/bin:/cygdrive/d/AmiDevCpp/bin:$PATH

next i run

./configure --host=m68k-amigaos --disable-hqx --disable-scale2x

in the dgen src directory.

[grelbfarlk]

Originally Posted by emufan

configure was included in the source archive.
I run it on my win7 box, using the toolchain of AmiDevCPP ( gcc 3.4.0 )
open a dosbox (cmd) cd to 'AmiDevCPP/bin' starting bash.exe
and adding locations of the gcc to $PATH.

export PATH=/cygdrive/d/AmiDevCpp/usr/local/amiga/bin:/cygdrive/d/AmiDevCpp/bin:$PATH

next i run

./configure --host=m68k-amigaos --disable-hqx --disable-scale2x

in the dgen src directory.


hmm, I'll have a look

#1)
bad start:

$ CC=m68k-amigaos-gcc.exe CFLAGS="-ISDL/include" LDFLAGS="-LSDL/lib" \
./configure --host=m68k-amigaos
Checking operating system ... Cygwin
Checking for suitable working C compiler ... m68k-amigaos-gcc.exe does not work
Error: Cannot proceed without a working C compiler.

*hmm*

But I mean, I ... I am at a loss. The project is not clear to me, you grab the libretro package, and what that includes the gui, some emulator cores and that all together? I barely slept last night so my low comprehension is lower than it usually is.

[emufan]

Originally Posted by grelbfarlk

Yeah sorry I didn't see configure in the git but it was in the tar.gz. Ran that, seems to like my opengl version at least.

ok, allright

Originally Posted by grelbfarlk

But I mean, I ... I am at a loss. The project is not clear to me, you grab the libretro package, and what that includes the gui, some emulator cores and that all together? I barely slept last night so my low comprehension is lower than it usually is.

hehe, I have no clue, maybe we should run that thing on windows, to see what we can get

Originally Posted by emufan

this was all done with gcc6, maybe an older gcc will work better. will try later

I run 'make -k' so it does continue after "errors" - and it does build alot more.
it does have problems with timespec and a non available timer function.

[grelbfarlk]

I looked at this a bit more today. The individual engines or "cores" as they call them are more or less separate packages. The main libretro package is the backend and gui. So once that part is built then adding whichever cores you'd like to add would be next.

[grelbfarlk]

Trying dgen again and I get this on pbm2df.c (first one):
../sdl/pbm2df.c: In function `main':
../sdl/pbm2df.c:53: parse error before `unsigned'
../sdl/pbm2df.c:55: `pbm_contents' undeclared (first use in this function)
../sdl/pbm2df.c:55: (Each undeclared identifier is reported only once
../sdl/pbm2df.c:55: for each function it appears in.)

[emufan]

Originally Posted by grelbfarlk

Trying dgen again and I get this on pbm2df.c (first one):

this is just a stand-alone, support tool.
here on my cygwin/win7 box I build win binary manualy and removed the build instruction from the sdl/Makefile:
it's been a while, but i guess this is the section, i comment out those lines

.pbm.cpp:
	./$(PBM2DF) $< $@

$(PBM2DF):				\
#	$(DIR)/pbm22df.c			\
	$(DIR)/dgenfont_16x26.pbm	\
	$(DIR)/dgenfont_8x13.pbm	\
	$(DIR)/dgenfont_7x5.pbm
#	$(CC_FOR_BUILD) $(CFLAGS_FOR_BUILD) -o $@ $(DIR)/pbm22df.c

# $(BUILT_SOURCES): $(PBM2DF)

it will convert those pbm files to cpp: dgenfont_16x26.pbm -> dgenfont_16x26.cpp

so you may just build it on ur host machine, take the 3 pbm files and make those .cpp:
pbm22df dgenfont_16x26.pbm dgenfont_16x26.cpp
next copy the cpp files in sdl folder and edit sdl/Makefile the way I did it

#1) attached the amigaos 68k binary - needs ixemul.library
if you have your toolchain on your amiga os3 machine, you may just copy pbm2df to sdl/ folder
and make the changes to sdl/Makefile

#2) sound is not working, does freeze dgen if enabled: --> dgenrc:
bool_sound = no
and I get some feedback from the emulator, maybe some AHI problem, dunno yet.

#3) dgen/system.h:

#ifndef __MINGW32__
//#define DGEN_BASEDIR ".dgen"
#define DGEN_BASEDIR "s:dgen"
#define DGEN_RC "dgenrc"
#define DGEN_AUTORC "dgenrc.auto"
#define DGEN_DIRSEP "/"
#else
#define DGEN_BASEDIR "DGen"
#define DGEN_RC "dgen.cfg"
#define DGEN_AUTORC "dgen_auto.cfg"
#define DGEN_DIRSEP "\\/"
#endif

it does read now from s:dgen/dgenrc ( default was T:.dgen/dgenrc )

#4) success with Lion King MD/Genesis rom (.md) - does work, nice

#5) it did work before, now I remember, have to use F5 - CrapTV "swab" mode, to get correct colors
not yet on aminet due to the non working sounds issue. no idea what's wrong with this :/