From 0c48d67ef6fe5b5bd0825ffae6fd71de698e5ba1 Mon Sep 17 00:00:00 2001
From: Electric Keet <ElectricKeet@users.noreply.github.com>
Date: Wed, 19 Jul 2023 18:35:08 -0700
Subject: [PATCH] Much better NES DPCM pitch table!

---
 doc/7-systems/nes.md | 37 +++++++++++++++++++------------------
 1 file changed, 19 insertions(+), 18 deletions(-)

diff --git a/doc/7-systems/nes.md b/doc/7-systems/nes.md
index c1b7c4c7f..2b81c2a87 100644
--- a/doc/7-systems/nes.md
+++ b/doc/7-systems/nes.md
@@ -122,24 +122,25 @@ reference: [NESdev](https://www.nesdev.org/wiki/APU_Length_Counter)
 
 ## DPCM frequency table
 
+"value" is for DefleMask compatability.
 
-value | NTSC freq | NTSC note  |  PAL freq |  PAL note  
------:|----------:|:----------:|----------:|:----------:
- `00` |  4181.7Hz | C-8  -  2¢ |  4177.4Hz | C-8  -  4¢
- `01` |  4709.9Hz | D-8  +  4¢ |  4696.6Hz | D-8  -  1¢
- `02` |  5264.0Hz | E-8  -  3¢ |  5261.4Hz | E-8  -  4¢
- `03` |  5593.0Hz | F-8  +  2¢ |  5579.2Hz | F-8  -  3¢
- `04` |  6258.0Hz | G-8  -  4¢ |  6023.9Hz | G-8  - 70¢
- `05` |  7046.4Hz | A-8  +  2¢ |  7044.9Hz | A-8  +  1¢
- `06` |  7919.4Hz | B-8  +  4¢ |  7917.2Hz | B-8  +  3¢
- `07` |  8363.4Hz | C-9  -  2¢ |  8397.0Hz | C-9  +  5¢
- `08` |  9419.9Hz | D-9  +  4¢ |  9446.6Hz | D-9  +  9¢
- `09` | 11186.1Hz | F-9  +  2¢ | 11233.8Hz | F-9  +  9¢
- `0A` | 12604.0Hz | G-9  +  8¢ | 12595.5Hz | G-9  +  7¢
- `0B` | 13982.6Hz | A-9  - 12¢ | 14089.9Hz | A-9  +  1¢
- `0C` | 16884.6Hz | C-10 + 15¢ | 16965.4Hz | C-10 + 23¢
- `0D` | 21306.8Hz | E-10 + 17¢ | 21315.5Hz | E-10 + 18¢
- `0E` | 24858.0Hz | G-10 - 16¢ | 25191.0Hz | G-10 +  7¢
- `0F` | 33143.9Hz | C-11 - 18¢ | 33252.1Hz | C-11 - 12¢
+value | tracker | NTSC freq | NTSC pitch |  PAL freq | PAL pitch  
+-----:|:-------:|----------:|:----------:|----------:|:----------:
+ `00` |  `C-3`  |  4181.7Hz | C-8  -  2¢ |  4177.4Hz | C-8  -  4¢
+ `01` |  `D-3`  |  4709.9Hz | D-8  +  4¢ |  4696.6Hz | D-8  -  1¢
+ `02` |  `E-3`  |  5264.0Hz | E-8  -  3¢ |  5261.4Hz | E-8  -  4¢
+ `03` |  `F-3`  |  5593.0Hz | F-8  +  2¢ |  5579.2Hz | F-8  -  3¢
+ `04` |  `G-3`  |  6258.0Hz | G-8  -  4¢ |  6023.9Hz | G-8  - 70¢
+ `05` |  `A-3`  |  7046.4Hz | A-8  +  2¢ |  7044.9Hz | A-8  +  1¢
+ `06` |  `B-3`  |  7919.4Hz | B-8  +  4¢ |  7917.2Hz | B-8  +  3¢
+ `07` |  `C-4`  |  8363.4Hz | C-9  -  2¢ |  8397.0Hz | C-9  +  5¢
+ `08` |  `D-4`  |  9419.9Hz | D-9  +  4¢ |  9446.6Hz | D-9  +  9¢
+ `09` |  `F-4`  | 11186.1Hz | F-9  +  2¢ | 11233.8Hz | F-9  +  9¢
+ `0A` |  `G-4`  | 12604.0Hz | G-9  +  8¢ | 12595.5Hz | G-9  +  7¢
+ `0B` |  `A-4`  | 13982.6Hz | A-9  - 12¢ | 14089.9Hz | A-9  +  1¢
+ `0C` |  `C-5`  | 16884.6Hz | C-10 + 15¢ | 16965.4Hz | C-10 + 23¢
+ `0D` |  `E-5`  | 21306.8Hz | E-10 + 17¢ | 21315.5Hz | E-10 + 18¢
+ `0E` |  `G-5`  | 24858.0Hz | G-10 - 16¢ | 25191.0Hz | G-10 +  7¢
+ `0F` |  `C-6`  | 33143.9Hz | C-11 - 18¢ | 33252.1Hz | C-11 - 12¢
 
 reference: [NESdev](https://www.nesdev.org/wiki/APU_DMC#Pitch_table)
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