mirror of
https://github.com/RaySollium99/picodrive.git
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76 lines
2.8 KiB
Markdown
76 lines
2.8 KiB
Markdown
This is yet another SEGA 8 bit and 16 bit console emulator for emulating most
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of the hardware SEGA has published up to and including the 32X.
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Emulated 16 bit systems: Mega Drive/Genesis, Sega/Mega CD, 32X, Pico.
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Emulated 8 bit systems: SG-1000, SC-3000, Master System/Mark III, Game Gear.
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PicoDrive was originally written having ARM-based handheld devices
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in mind, but later had got various improvements for other architectures
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too, like SH2 recompilers for MIPS (mips32r2), ARM64 (armv8), RISC-V (RV64IM)
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and PowerPC (G4/2.03).
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PicoDrive was the first emulator ever to properly emulate Virtua Racing and
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its SVP chip.
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Currently the main development happens in the
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[irixxxx's fork](https://github.com/irixxxx/picodrive),
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[notaz's repo](https://github.com/notaz/picodrive) isn't updated as much.
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### compiling
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For platforms for which release builds are supplied the most easy way is to
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use the release script in tools/release.sh. See the release script for details.
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To make a platform build use
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> tools/release.sh [version] [platforms...]
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This will deliver a file for each platform in a the release-[version] directory.
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A list of platforms is in the release script.
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If you want to build an executable for a unixoid platform not listed in the
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platform list, try using
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> configure --platform=generic
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If DRC is available for the platform, it should be enabled automatically.
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For gp2x, wiz, and caanoo you may need to compile libpng first.
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After configure, compile with
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> make
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### helix MP3 decoder for ARM
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For 32 bit ARM platforms, the optimized helix MP3 decoder can be used to play
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MP3 audio files with CD games. The helix source files are however not supplied
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due to licensing issues. If you have legally obtained the sources, put them in
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the platform/common/helix directory.
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To compile the helix sources, set CROSS_COMPILE to your cross compiler prefix
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(e.g. arm-linux-gnueabi-) and LIBGCC to your cross compiler's libgcc.a
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(e.g. /usr/lib/gcc-cross/arm-linux-gnueabi/4.7/libgcc.a), and compile with
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> make -C platform/common/helix CROSS_COMPILE=$CROSS_COMPILE LIBGCC=$LIBGCC
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This will result in a shared library named ${CROSS_COMPILE}helix_mp3.so. Copy
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this as libhelix.so to where the PicoDrive binary is on the target device.
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Also, the support for helix must be enabled in PicoDrive by compiling with
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> make PLATFORM_MP3=1
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This switch is automatically enabled for Gamepark Holdings devices (gp2x,
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caanoo and wiz). Without installing libhelix.so those devices will not play
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MP3 audio.
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### installing
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The release scripts produces zip files which need to be installed on the
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target device manually. Usually that means unpacking the file to some
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directory on the device storage or on an SD card. See device specific
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descriptions on the net.
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Send bug reports, fixes etc to <derkub@gmail.com>
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