3314e88244
I'd like the readme to not look weird in notaz/picodrive when I merge all the changes, where it will be unclear who the 1st person pronoun refers to. Several people have put quite some effort into it, so I think it's best not to highlight anyone. Also remove the old readme which has become outdated.
4.1 KiB
This is yet another Megadrive / Genesis / Sega CD / Mega CD / 32X / SMS emulator, which was originally written having ARM-based handheld devices in mind, but later had got various improvements for other architectures too, like SH2 recompilers for MIPS (mips32r2), ARM64 (armv8), RISC-V (RV64IM) and PowerPC (G4/2.03).
PicoDrive was the first emulator ever to properly emulate Virtua Racing and it's SVP chip.
Currently the main development happens in the irixxxx's fork, notaz's repo isn't updated as much.
compiling
A list of platforms for which this is possible can be obtained with
configure --help
If you want to build an executable for a unixoid platform not listed in the platform list, just use
configure --platform=generic
If DRC is available for the platform, it should be enabled automatically.
For other platforms using a cross-compiling toolchain I used this, assuming $TC points to the appropriate cross compile toolchain directory:
| platform | toolchain | configure command |
|---|---|---|
| gp2x,wiz,caanoo | open2x | CROSS_COMPILE=arm-open2x-linux- CFLAGS="-I$TC/gcc-4.1.1-glibc-2.3.6/arm-open2x-linux/include" LDFLAGS="--sysroot $TC/gcc-4.1.1-glibc-2.3.6/arm-open2x-linux -L$TC/gcc-4.1.1-glibc-2.3.6/arm-open2x-linux/lib" ./configure --platform=gp2x |
| gp2x,wiz,caanoo | open2x with ubuntu arm gcc 4.7 | CROSS_COMPILE=arm-linux-gnueabi- CFLAGS="-I$TC/gcc-4.1.1-glibc-2.3.6/arm-open2x-linux/include" LDFLAGS="-B$TC/gcc-4.1.1-glibc-2.3.6/lib/gcc/arm-open2x-linux/4.1.1 -B$TC/gcc-4.1.1-glibc-2.3.6/arm-open2x-linux/lib -L$TC/gcc-4.1.1-glibc-2.3.6/arm-open2x-linux/lib" ./configure --platform=gp2x |
| dingux | dingux | CROSS_COMPILE=mipsel-linux- CFLAGS="-I$TC/usr/include -I$TC/usr/include/SDL" LDFLAGS="--sysroot $TC -L$TC/lib" ./configure --platform=dingux |
| dingux | dingux with ubuntu mips gcc 5.4 | CROSS_COMPILE=mipsel-linux-gnu- CFLAGS="-I$TC/usr/include -I$TC/usr/include/SDL" LDFLAGS="-B$TC/usr/lib -B$TC/lib -Wl,-rpath-link=$TC/usr/lib -Wl,-rpath-link=$TC/lib" ./configure --platform=dingux |
| retrofw | retrofw | CROSS_COMPILE=mipsel-linux- CFLAGS="-I $TC/include -I $TC/include/SDL -Wno-unused-result" LDFLAGS="--sysroot $TC/mipsel-buildroot-linux-uclibc/sysroot" ./configure --platform=retrofw |
| gcw0 | gcw0 | CROSS_COMPILE=mipsel-gcw0-linux-uclibc- CFLAGS="-I$TC/usr/mipsel-gcw0-linux-uclibc/sysroot/usr/include -I$TC/usr/mipsel-gcw0-linux-uclibc/sysroot/usr/include/SDL" LDFLAGS="--sysroot $TC/usr/mipsel-gcw0-linux-uclibc/sysroot" ./configure --platform=gcw0 |
| rg350 | rg350 | CROSS_COMPILE=mipsel-linux- CFLAGS="-I$TC/usr/include -I$TC/usr/include/SDL" LDFLAGS="--sysroot $TC -L$TC/lib" ./configure --platform=rg350 |
| miyoo | miyoo | CROSS_COMPILE=arm-miyoo-linux-uclibcgnueabi- CFLAGS="-I$TC/arm-miyoo-linux-uclibcgnueabi/sysroot/usr/include -I$TC/arm-miyoo-linux-uclibcgnueabi/sysroot/usr/include/SDL" LDFLAGS="--sysroot $TC/arm-miyoo-linux-uclibcgnueabi/sysroot" ./configure --platform=miyoo |
For gp2x, wiz, and caanoo you may need to compile libpng first.
After configure, compile with
make
helix MP3 decoder for ARM
For 32 bit ARM platforms, there is the possibility to compile the helix MP3 decoder into a shared library to be able to use MP3 audio files with CD games. The helix source files aren't supplied because of licensing issues. However, if you have obtained the sources, put them into the platform/common/helix directory, set CROSS to your cross compiler prefix (e.g. arm-linux-gnueabi-) and LIBGCC to your cross compiler's libgcc.a (e.g. /usr/lib/gcc-cross/arm-linux-gnueabi/4.7/libgcc.a), and compile with
make -C platform/common/helix CROSS=$CROSS LIBGCC=$LIBGCC
Copy the resulting ${CROSS}helix_mp3.so as libhelix.so to the directory where the PicoDrive binary is.
installing
You need to install the resulting binary onto your device manually. For opendingux, gcw0, and rg350, copy the opk to your SD card. For gp2x, wiz, and caanoo, the easiest way is to unpack PicoDrive_191.zip on your SD card and replace the PicoDrive binary. For legacy dingux, unpack the dge zip and copy the files to your SD card.
Send bug reports, fixes etc to derkub@gmail.com