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27 lines
1.4 KiB
27 lines
1.4 KiB
9 years ago
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This is reSID, a reverse engineered software emulation of the MOS6581 SID
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(Sound Interface Device). This chip was used in the Commodore 64 computer.
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reSID is free software. See the file COPYING for copying permission.
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reSID is a C++ library containing a complete emulation of the SID chip.
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This library can be linked into programs emulating the MOS6510 MPU to
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play music made for the Commodore 64 computer. reSID has been successfully
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linked into VICE, a full-fledged Commodore 64 emulator, and SIDPLAY, a
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popular SID tune player. The VICE home page is:
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http://www.viceteam.org/
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A patch for SIDPLAY can be found on the SIDPLAY home page:
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http://www.geocities.com/SiliconValley/Lakes/5147/
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Various SID emulators exist, however reSID should still be of great
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interest to Commodore 64 nostalgics. The emulator engine is cycle-based,
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emulating the internal operations of the SID chip. SID's audio filter is
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modeled as an actual two-integrator-loop biquadratic filter circuit.
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The engine has been developed based on available information on SID, sampling
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of the OSC3 and ENV3 registers, filter theory, and meticulous testing.
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In short, a scientific approach has been taken to model the SID chip as
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accurately as possible.
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To our knowledge reSID is by far the most accurate SID emulator ever created.
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This comes at a price; what is considered a fairly fast CPU at the time of
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this writing is needed to run the emulator.
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