From d9143e93979e9531d64f9b5067f7e3fed5f78d0e Mon Sep 17 00:00:00 2001
From: Teuthida255 <33849310+Teuthida255@users.noreply.github.com>
Date: Fri, 21 Jun 2019 14:45:06 -0700
Subject: [PATCH 1/2] Fixed 5B Instrument Recording

---
 Source/InstrumentRecorder.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/Source/InstrumentRecorder.cpp b/Source/InstrumentRecorder.cpp
index 10ab9c1f..54cd4766 100644
--- a/Source/InstrumentRecorder.cpp
+++ b/Source/InstrumentRecorder.cpp
@@ -216,7 +216,8 @@ void CInstrumentRecorder::RecordInstrument(const unsigned Tick, CView *pView)		/
 					}
 					break;
 				case SNDCHIP_S5B:
-					Val = 0x1F & REG(0x06) | (0x10 & REG(0x08 + ID)) << 1
+					//0x1F accounts for inverted noise period value
+					Val = 0x1F & (0x1F - REG(0x06)) | (0x10 & REG(0x08 + ID)) << 1
 						| (0x01 << ID & ~REG(0x07)) << (6 - ID) | (0x08 << ID & ~REG(0x07)) << (4 - ID); break;
 				}
 				break;
@@ -404,4 +405,4 @@ void CInstrumentRecorder::FinalizeRecordInstrument()
 			N163Inst->SetSample(0, j, 0);
 		break;
 	}
-}
\ No newline at end of file
+}

From bd238581a74dcee8ca39e75cda721148136c5ac8 Mon Sep 17 00:00:00 2001
From: jimbo1qaz <jimbo1qaz@gmail.com>
Date: Thu, 27 Jun 2019 21:08:13 -0700
Subject: [PATCH 2/2] Fix math?

---
 Source/InstrumentRecorder.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Source/InstrumentRecorder.cpp b/Source/InstrumentRecorder.cpp
index 54cd4766..6faa2170 100644
--- a/Source/InstrumentRecorder.cpp
+++ b/Source/InstrumentRecorder.cpp
@@ -217,7 +217,7 @@ void CInstrumentRecorder::RecordInstrument(const unsigned Tick, CView *pView)		/
 					break;
 				case SNDCHIP_S5B:
 					//0x1F accounts for inverted noise period value
-					Val = 0x1F & (0x1F - REG(0x06)) | (0x10 & REG(0x08 + ID)) << 1
+					Val = 0x1F - (0x1F & REG(0x06)) | (0x10 & REG(0x08 + ID)) << 1
 						| (0x01 << ID & ~REG(0x07)) << (6 - ID) | (0x08 << ID & ~REG(0x07)) << (4 - ID); break;
 				}
 				break;