Demoscene Productions


Colorbepp 2 (2015) +video
Osaka (2014) +video
Colorbepp (2013)

Also check out my numerous music disks in the music section.


Music Sequencers and Softsynths


HoustonTracker 2 - native music editor for TI-82/83/83+/84+ and compatible calculators
HoustonTracker - native music editor for TI-73/82/83/83+/84+, now abandoned
MDAL - tracker-like music markup language for low-level sound drivers
rom2pwm - experimental 64 byte 1-bit noise/glitch synth for ZX Spectrum
TPSFX2 - monophonic PC Speaker synthesizer for MS-DOS that I wrote in high school


Sound Routines


Dragon/Tandy CoCo
pcmplay - 4 tone channels (wavetable synthesis)

IBM PC (PC Speaker)
cheabop 0.1 - crappy PC speaker routine for Linux

Fairchild VES/Channel F
sleizsa duo - First ever multi-channel sound driver for this machine. 2 tone channels (pulse-interleaving), click drums

Sharp PC-1403(H)
Osaka-II - 2 tone channels (pulse-interleaving), synth drums

Texas Instruments Z80-based Graphing Calculators
rawp-ti - 2 tone channels (wavetable synthesis), click drums
TI 1-Bit Pack 0.3 - ports of various ZX Spectrum 1-bit routines

Texas Instruments 68k-based Graphing Calculators
qed68 - 4 channel PCM sample module player

ZX-81
1k2b - First ever multi-channel sound driver for the unexpanded ZX81. 2 tone channels (pulse-interleaving), click drums, runs in 1K of RAM

ZX Spectrum (beeper)
anteater - 2 tone channels (pulse-interleaving), phase modulation, click drums
Beepertoy v0.1 - meta-engine, includes various PFM, pulse-interleaving, and wavetable cores
BetaPhase - test implementation of fast 13-bit PuInt technique, 3 channels, phasing, slides
fluidcore - 4 channels of fairly accurate wavetable synthesis
nanobeep - 2 tone channels (PFM/pin pulse accumulation) and 1 click drum in 83 bytes
ntropic - 2 tone channels (pulse-interleaving), 1 noise channel (PWM/ROM noise), click drums
Octode 2k15 - 8 tone channels (PFM), limited volume control, click drums
Octode 2k16 - 8 tone channels (digital square wave), volume-controllable click drums
Octode PWM - 8 tone channels (pulse-interleaving), limited duty control, click drums
PhaserX - 2 tone channels (pulse-interleaving), advanced duty modulation, phasing, noise
PhaseSqueek - 1-4 tone channels (PFM/pulse-interleaving hybrid), advanced timbre control, tick-based fx tables, noise
povver - 3 tone channels, phase-offset volume control, customizable click drums
poww - crude 2-channel wavetable synthesis
qaop - 2 channels of fairly accurate wavetable synthesis with overdrive
quattropic - 4 tone channels (pulse-interleaving), variable pulse width, can also play noise, pitch slides
rawp - 2 channels of moderately accurate wavetable synthesis
Squeeker Plus - 4 tone channels (PFM/pulse-interleaving hybrid), per-tick duty envelopes, noise
Tritone FX - 3 tone channels (pulse-interleaving), variable duty, tick-based effects, noise
wtbeep - 3 tone channels, 32 realtime generated waveforms, customizable click drums
wtfx - 2 tone channels of very accurate wavetable synthesis
xtone - 6 tone channels (pulse-interleaving), variable duty, click drums
yawp - 3 tone channels, moderately accurate wavetable synthesis
zbmod - 3 channel sample player

ZX Spectrum (AY/beeper)
squeekAY - 3 channels beeper (Squeeker-type hybrid synthesis, with duty control) + 3 channels AY with volume envelopes and buzzer



Speech Synthesizers


ZSpeak - speech synthesizer for ZX Spectrum (beeper)
ZSpeak-TI - speech synthesizer for Z80-based TI calculators


Documentation


SC61860 (ESR-H) CPU mnemonics