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taud: extended tempo range

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minjaesong
2026-06-20 04:00:33 +09:00
parent 1173373789
commit 6eb73355ca
11 changed files with 101 additions and 49 deletions
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21
terranmon.txt
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@@ -119,14 +119,13 @@ MMIO
93 RO: Set beeper status (aka upload beeper command)
READING causes the side effect (and returns beeper status — 1 if a tone is currently sounding, 0 otherwise). WRITING DOES NOTHING
94..97 RW: Beeper command
0bPPPPPPPP 0bpppppp_QQ 0bAAAAAAAA 0bBBBBBBBB
94..99 RW: Beeper command
0bPPPPPPPP 0bpppppp_QQ 0bqqAABBCC 0baaaaaaaa 0bbbbbbbbb 0bcccccccc
PPPPPPPPpppppp: frequency divider (master clock: 3579545 / 16 Hz), determines pitch.
PPPPPPPPpppppp: 14-bit frequency divider (master clock: 3579545 / 16 Hz), determines pitch.
0: no sound
QQ: note effect
00: none
01: fixed arpeggio (rate = 60 Hz, second note is always divisor (P >>> 1))
10: two-note argeggio (rate = 60 Hz)
tick 1: base note at divisor P is played
tick 2: second note at divisor (P - (B << 8 | A)) is played
@@ -134,7 +133,12 @@ MMIO
tick 1: base note at divisor P is played
tick 2: second note at divisor (P - A) is played
tick 3: third note at divisor (P - A - B) is played
A/B: note effect arguments
01: four-note arpeggio (rate = 60 Hz)
tick 1: base note at divisor P is played
tick 2: second note at divisor (P - A) is played
tick 3: third note at divisor (P - A - B) is played
tick 4: fourth note at divisor (P - A - B - C) is played
Aa/Bb/Cc: note effect arguments (10-bit divisor delta for arpeggiator; byte 96 has high two bits)
1024..2047 RW: Reserved for integrated peripherals (e.g. built-in status display)
@@ -2942,7 +2946,10 @@ TODO:
reset on retrigger, so a true value means this note was released. A parent that ended naturally
(no release) still leaves the child to finish on its own.
[x] Some ways to decouple Sample+Inst and patterns into separate files (tsvm-doom needs separate file access; samplepack can be uploaded once on init)
[ ] The same VT-aware patch thing for all fullscreen apps, possibly made simple by only requiring one row of simple code
[x] The same VT-aware patch thing for all fullscreen apps, possibly made simple by only requiring one row of simple code
* DONE 2026-06-20. See `con.setFullscreen()`
[x] Taud double the BPM ceiling
* DONE 2026-06-20. BPM range 25..535 via `T $FFxx` + the song-table byte-8 high bit (tickrate now 7-bit).
TODO - list of demo songs that MUST ship with Microtone:
* 4THSYM (rename to Fourth Symmetriad) — excellent piece for demonstrating NNAs and filter envelopes
@@ -3199,7 +3206,7 @@ Endianness: Little
Uint8 Number of voices
Uint16 Number of patterns (0 is invalid. pattern bin length = numPats * 8 bytes)
Uint8 Initial BPM (bias of -25. 0x00=25, 0xFF=280)
Uint8 Initial Tickrate (0 is invalid)
Uint8 BPM high bit (bit 7; 0x100=281, 0x1FE = 535; `T FFxx` cannot put 0x1FF into BPM) + initial Tickrate (0 is invalid; bit 0..6)
Uint16 Current Tuning base note (1..65533). A4 (western default) is 0x5C00. C9 (tracker default) is 0xA000. If zero, assume the tracker default value
Float32 Frequency at the base note. Tracker default is 8363.0. If zero, assume the tracker default
Uint8 Flags for Global Behaviour (effect symbol '1')