formalfred

FM-1 simulator the real firmware

Off. Power on to boot the firmware (browser audio needs a click).

Off
line out

The proofs, watched the theorems' statements, checked on the running machine

The theorems are about the Lean. The C that calls it and the compiler are trusted; here twelve of the statements are also asserted at the point the C uses the Lean's answer. A failure could only come from those trusted parts.

theoremchecksstate
power on first

Keys: computer rows Z–/ play from C4 and Q–T from C5, or click the keys. - and = are OCT- and OCT+. Space is PLAY, Esc is HOME, [ and ] turn Select, PageUp and PageDown step through the patches. Knobs: scroll wheel, drag up or down, click the left or right half, or arrow keys when focused. Hover a button for what it does. A link with ?patch=N loads that patch at power on.