Prysm 1.1

Prysm 1.1: VCA OPEN now works like an analog synth's VCA bias.

Install: the web installer (Chrome or Edge), or python3 tools/fm1_install.py prysm-1.1.fwsc. Manual: docs/MANUAL.md. Your saved sounds and patterns carry over (same patch format as 1.0).

Changed

• Turn OPEN up and the oscillators sound at once, with no key: the whole sound, FM, filter and all, at the pitch they were last played at (C3 when nothing has been played since power-on).
• The drone responds live: while a voice drones, its modulator, filter and mod envelopes hold as if its key were down, so AMT, ENV and every other knob change it as you turn them. A looping mod envelope keeps looping.
• Voices that went quiet earlier no longer come back on their old notes when you open OPEN.

Unchanged: keys play over the drone, notes you let go drone on (a chord becomes a drone chord), and OPEN back to 0 fades it out.

From ETCH: restore the official firmware first. If an FM-1 does not start after an update, hold OCT- while switching it on (the rescue updater). Community firmware, not made or supported by M-VAVE: install at your own risk. GPL-3.0.