Cycle-exact SID playback.
No compromises.
ultraSID plays the HVSC the way real hardware does - every register write, every cycle. With curated 6581 filter settings per author, seekable tunes, and search-as-you-type across the whole collection.
Features
Built for people who know the chip
Accurate first, comfortable second - and no trade-off between the two.
Cycle-exact emulation
State-of-the-art SID and CPU emulation. Tunes play like on real hardware.
Curated 6581 filters
Hand-tuned filter settings for the most popular SID authors.
Full HVSC integration
Instant search while you type, song lengths, and STIL - the whole collection at your fingertips.
Scrubbing
Jump to any position in a tune, like in any regular media player.
CRT simulation
Title screens and game screenshots for the tune you're playing, through faithful PAL and NTSC emulation.
Chip visualization
Watch each voice and the filter live while the music plays.
Under the hood
An honest stack
libSidplayEZ
Emulation by Toddler-Boy/libSidplayEZ.
HVSC
Requires the High Voltage SID Collection.
Open source
Free to use, read, and improve.