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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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15
assets/disk0/tvdos/bin/taut.js
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@@ -826,8 +826,9 @@ function loadTaud(filePath, songIndex) {
const numVoices = sys.peek(ptr + entryOff + 4) & 0xFF
const numPats = (sys.peek(ptr + entryOff + 5) & 0xFF) |
((sys.peek(ptr + entryOff + 6) & 0xFF) << 8)
const bpmStored = sys.peek(ptr + entryOff + 7) & 0xFF
const tickRate = sys.peek(ptr + entryOff + 8) & 0xFF
const tickPacked = sys.peek(ptr + entryOff + 8) & 0xFF
const bpmStored = (sys.peek(ptr + entryOff + 7) & 0xFF) | ((tickPacked & 0x80) << 1) // bit 7 of byte 8 = BPM high bit
const tickRate = tickPacked & 0x7F
const patBinCompSize = _peekU32LE(ptr, entryOff + 18)
const cueSheetCompSize = _peekU32LE(ptr, entryOff + 22)
@@ -914,8 +915,8 @@ function loadTaudSongList(filePath) {
numVoices: sys.peek(ptr + entryOff + 4) & 0xFF,
numPats: (sys.peek(ptr + entryOff + 5) & 0xFF) |
((sys.peek(ptr + entryOff + 6) & 0xFF) << 8),
bpm: ((sys.peek(ptr + entryOff + 7) & 0xFF) + 25),
tickRate: sys.peek(ptr + entryOff + 8) & 0xFF,
bpm: ((sys.peek(ptr + entryOff + 7) & 0xFF) + 25 + ((sys.peek(ptr + entryOff + 8) & 0x80) << 1)), // bit 7 of byte 8 = BPM high bit
tickRate: sys.peek(ptr + entryOff + 8) & 0x7F,
mixerflags: sys.peek(ptr + entryOff + 15) & 0xFF,
songGlobalVolume: sys.peek(ptr + entryOff + 16) & 0xFF,
songMixingVolume: sys.peek(ptr + entryOff + 17) & 0xFF,
@@ -2726,8 +2727,10 @@ function simulateRowState(ptnDat, uptoRow) {
}
else if (effop === OP_T) {
const hi = (effarg >>> 8) & 0xFF
if (hi !== 0) {
bpm = Math.max(25, Math.min(280, hi + 0x19))
if (hi === 0xFF) {
bpm = Math.max(25, Math.min(535, (effarg & 0xFF) + 0x118)) // T $FFxx — extended tempo
} else if (hi !== 0) {
bpm = Math.max(25, Math.min(535, hi + 0x19))
} else {
const low = effarg & 0xFF
if ((low & 0xF0) === 0x00 || (low & 0xF0) === 0x10) memTSlide = low