Install: ./instalar-linux.sh jangada-0.9.6.fwsc, or the web installer. Same sound as 0.9.4. Replaces 0.9.5.
The second core, safely (#4; the second core found by @keremimo in Melodee and shipped in X0X by @charlesvestal)
The FM-1's chip has two cores. With both, the synth parts are split between them, and the same patch takes about a third less CPU (31% → 21% on our test load). The sound is bit-for-bit the same.
Not every FM-1 can run both cores at the supply it ships with. Some chips misread their RAM and crash. 0.9.5 raised the supply on every unit. After @keremimo's warning that this could damage someone else's chip, 0.9.6 makes it a choice. MENU > 2ND CORE, read at power-on:
- AUTO (default): both cores at the stock supply. If the second core misreads even once, it's stopped before it runs anything else, the FM-1 carries on with one core, and the setting turns itself to OFF.
- OFF: one core.
- BOOST: raises the chip's supply first (core 1.38 V, DC-DC 1.50 V), for units that need it. This is above the chip maker's own profile and the chip's limits are not public: use it at your own risk. On our unit it took the second core from crashing in seconds to a 33-minute session with no errors.
If your FM-1 shows "IT MISREAD: ONE CORE NOW" under 2ND CORE, it's one of the units that needs more supply. It works fine on one core, as it always has. The measurements are in BUILDING.md.
Full Changelog: v0.9.4...v0.9.6