synth-mod

Roland D-110 custom samples mod: swap the PCM mask ROMs for flash and load your own sounds. Record on your PC, burn, play. Works on hardware. Pairs with D-110 Rosetta OS.

Roland D-70 mod: custom OS with live synth pages, DLM page, new effects on the effects chip (drive, bit crush, decimator, rectifier, resonant filters), custom U-110 cards and a keyboard fix. Patches your own EPROM dumps. No Roland code included.

Roland D-110 mod: custom OS with arp, step sequencer, MIDI out, MIDI CC knobs, wave sequencing, mod matrix, unison, glide, chords. Bake it into your own ROM dumps. No Roland code included.

Casio SK-1 (SK1) mod: replace the preset ROM with an EEPROM and load your own sounds from WAVs or Akai/Roland sample CDs, with custom loops. Works on a real SK-1.

Yamaha PSS-270 mod: an Arduino Mega + ESP8266 takes over the YM2413 FM chip and the keys. MIDI in/out, arpeggiator, key menu, live FM tone editor with draggable envelopes, WiFi updates.

Roland PRO-E mod: Rosetta OS custom firmware with a Juno mode, Juno chorus / delay / lo-fi / drive on its reverb chip, SYNTH EDIT on the panel and new styles from MIDI. Tested on a real PRO-E. No Roland code included.