curioustorvald/tsvm
1
0
Fork 0
mirror of https://github.com/curioustorvald/tsvm.git synced 2026-06-17 09:54:04 +09:00
Code Issues Packages Projects Releases Wiki Activity

midi2taud: loop point detection and forced-loop

Browse Source
This commit is contained in:
minjaesong
2026-06-16 23:04:51 +09:00
parent 930e867b3e
commit c3702fb597
5 changed files with 315 additions and 29 deletions
Download Patch File Download Diff File Expand all files Collapse all files

47
terranmon.txt
View File

@@ -256,7 +256,24 @@ MMIO
0b 0000 00rc (r: TTY Raw mode, c: Cursor blink)
7 RW
Graphics-mode attributes
0b 0000 rrrr (r: Resolution/colour depth)
0b 00ii 000t (t: disable text, i: interlaced mode)
When interlace is enabled (i > 0), the layers are overlaind in the checkerboard pattern, allowing blending.
On graphics mode 2, the pattern is:
[L1 L2]
[L2 L1]
for all nonzero i.
On graphics mode 3, the pattern is:
i=1 [L1 L2]
[L2 L1] (where L1: mid-low layer, L2: mid-high layer; low-layer is drawn behind, high-layer is drawn over)
i=2 [L1 L2]
[L3 L1] (where L1: low layer, L2: mid-low layer, L3: mid-high layer; high-layer is always drawn over)
i=3 [L1 L2]
[L3 L4]
On the other graphics modes, the flag has no effect and always zero when read
8 RO
Last used colour (set by poking at the framebuffer)
9 RW
@@ -266,17 +283,18 @@ MMIO
11 RO
Number of Banks, or VRAM size (1 = 256 kB, max 4)
12 RW
Graphics Mode
0: 560x448, 256 Colours, 1 layer
1: 280x224, 256 Colours, 4 layers
2: 280x224, 4096 Colours, 2 layers
3: 560x448, 256 Colours, 2 layers (if bank 2 is not installed, mode change will not happen)
4: 560x448, 4096 Colours, 1 layer (if bank 2 is not installed, mode change will not happen)
5: 560x448, 15-bit colour, 1 layer (if bank 2 is not installed, mode change will not happen)
8: 560x448, 24-bit colour, 1 layer (if bank 3 and 4 are not installed, mode change will not happen)
4096 is also known as "direct colour mode" (4096 colours * 16 transparency -> 65536 colours)
Two layers are grouped to make a frame, "low layer" contains RG colours and "high layer" has BA colours,
Red and Blue occupies MSBs
0b 0000 mmmm, where:
mmmm: Graphics Mode
0: 560x448, 256 Colours, 1 layer
1: 280x224, 256 Colours, 4 layers
2: 280x224, 4096 Colours, 2 layers
3: 560x448, 256 Colours, 2 layers (if bank 2 is not installed, mode change will not happen)
4: 560x448, 4096 Colours, 1 layer (if bank 2 is not installed, mode change will not happen)
5: 560x448, 15-bit colour, 1 layer (if bank 2 is not installed, mode change will not happen)
8: 560x448, 24-bit colour, 1 layer (if bank 3 and 4 are not installed, mode change will not happen)
4096 is also known as "direct colour mode" (4096 colours * 16 transparency -> 65536 colours)
Two layers are grouped to make a frame, "low layer" contains RG colours and "high layer" has BA colours,
Red and Blue occupies MSBs
13 RW
Layer Arrangement
If 4 layers are used:
@@ -2879,7 +2897,8 @@ TODO:
detaching, mirroring the existing active-branch. parent.keyOff survives deactivation and is
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.
[ ] Some ways to decouple Sample+Inst and patterns into separate files (tsvm-doom needs separate file access; samplepack can be uploaded once on init)
[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
TODO - list of demo songs that MUST ship with Microtone:
* 4THSYM (rename to Fourth Symmetriad) — excellent piece for demonstrating NNAs and filter envelopes
@@ -3028,7 +3047,7 @@ Play Head Flags
Byte 31..32: instruction
1000xxxx yyyyyyyy (BAK000) - Go back 0bxxxxyyyyyyyy patterns
1001xxxx yyyyyyyy (FWD000) - Skip forward 0bxxxxyyyyyyyy patterns
1111xxxx yyyyyyyy (JMP000) - Go to absolute pattern number 0bxxxxyyyyyyyy
1111xxxx yyyyyyyy (JMP000) - Go to absolute pattern number 0bxxxxyyyyyyyy (decoded by AudioAdapter as of 2026-06-15; emitted by midi2taud --loop / loop-marker conversion to jump back to the loop-start cue)
00000010 00xxxxxx (LEN 00) - Pattern length for this cue (0..63), where 0: 1 row, 63: 64 rows (decoded by AudioAdapter as of 2026-05-05; emitted by xm2taud / it2taud for non-multiple-of-64 source patterns)
00000001 00000000 - Halt (HALT ) - Play the full length of the pattern then stop the playback
00000001 01xxxxxx - Halt at x (HALT00) - Play the specified length of the pattern then stop the playback. x = 0 is identical to regular HALT. (decoded by AudioAdapter as of 2026-06-14; emitted as the final cue by midi2taud / it2taud / xm2taud so a partial last bar halts at its own length)