diff --git a/Source/Apps/Tune/Tunes/LEMMIN01.VGM b/Source/Apps/Tune/Tunes/LEMMIN01.VGM
new file mode 100644
index 00000000..74b0cee9
Binary files /dev/null and b/Source/Apps/Tune/Tunes/LEMMIN01.VGM differ
diff --git a/Source/Apps/Tune/Tunes/PENGUI03.VGM b/Source/Apps/Tune/Tunes/PENGUI03.VGM
new file mode 100644
index 00000000..0d2c3625
Binary files /dev/null and b/Source/Apps/Tune/Tunes/PENGUI03.VGM differ
diff --git a/Source/Apps/Tune/Tunes/PITFAL02.VGM b/Source/Apps/Tune/Tunes/PITFAL02.VGM
new file mode 100644
index 00000000..92d56555
Binary files /dev/null and b/Source/Apps/Tune/Tunes/PITFAL02.VGM differ
diff --git a/Source/Apps/Tune/Tunes/TEDDY.VGM b/Source/Apps/Tune/Tunes/TEDDY.VGM
new file mode 100644
index 00000000..4d667ccd
Binary files /dev/null and b/Source/Apps/Tune/Tunes/TEDDY.VGM differ
diff --git a/Source/Apps/Tune/Tunes/TIGER02.VGM b/Source/Apps/Tune/Tunes/TIGER02.VGM
new file mode 100644
index 00000000..29146936
Binary files /dev/null and b/Source/Apps/Tune/Tunes/TIGER02.VGM differ
diff --git a/Source/Apps/Tune/Tunes/WONDER01.VGM b/Source/Apps/Tune/Tunes/WONDER01.VGM
new file mode 100644
index 00000000..d6efddc0
Binary files /dev/null and b/Source/Apps/Tune/Tunes/WONDER01.VGM differ
diff --git a/Source/HBIOS/Config/SBC_max.asm b/Source/HBIOS/Config/SBC_max.asm
index ab57620a..fe1957ec 100644
--- a/Source/HBIOS/Config/SBC_max.asm
+++ b/Source/HBIOS/Config/SBC_max.asm
@@ -63,3 +63,5 @@ SDENABLE	.SET	TRUE		; SD: ENABLE SD CARD DISK DRIVER (SD.ASM)
 PRPENABLE	.SET	TRUE		; PRP: ENABLE ECB PROPELLER IO BOARD DRIVER (PRP.ASM)
 ;
 AY38910ENABLE	.SET	TRUE		; AY: AY-3-8910 / YM2149 SOUND DRIVER
+;
+SN7ENABLE	.SET	TRUE		; SN : SN76489 DRIVER
diff --git a/Source/HBIOS/cfg_dyno.asm b/Source/HBIOS/cfg_dyno.asm
index f2c034cc..5a4ce268 100644
--- a/Source/HBIOS/cfg_dyno.asm
+++ b/Source/HBIOS/cfg_dyno.asm
@@ -187,6 +187,7 @@ UFENABLE	.EQU	FALSE		; UF: ENABLE ECB USB FIFO DRIVER (UF.ASM)
 SN76489ENABLE	.EQU	FALSE		; SN76489 SOUND DRIVER
 AUDIOTRACE	.EQU	FALSE		; ENABLE TRACING TO CONSOLE OF SOUND DRIVER
 SN7CLK		.EQU	CPUOSC / 4	; DEFAULT TO CPUOSC / 4
+SNMODE		.EQU	SNMODE_NONE	; DRIVER MODE: SNMODE_[NONE|RC2014|VGM]
 ;
 AY38910ENABLE	.EQU	FALSE		; AY: AY-3-8910 / YM2149 SOUND DRIVER
 AY_CLK		.EQU	CPUOSC / 4	; DEFAULT TO CPUOSC / 4
diff --git a/Source/HBIOS/cfg_ezz80.asm b/Source/HBIOS/cfg_ezz80.asm
index 6914d777..24713e83 100644
--- a/Source/HBIOS/cfg_ezz80.asm
+++ b/Source/HBIOS/cfg_ezz80.asm
@@ -229,6 +229,7 @@ UFENABLE	.EQU	FALSE		; UF: ENABLE ECB USB FIFO DRIVER (UF.ASM)
 SN76489ENABLE	.EQU	FALSE		; SN76489 SOUND DRIVER
 AUDIOTRACE	.EQU	FALSE		; ENABLE TRACING TO CONSOLE OF SOUND DRIVER
 SN7CLK		.EQU	CPUOSC / 4	; DEFAULT TO CPUOSC / 4
+SNMODE		.EQU	SNMODE_NONE	; DRIVER MODE: SNMODE_[NONE|RC2014|VGM]
 ;
 AY38910ENABLE	.EQU	FALSE		; AY: AY-3-8910 / YM2149 SOUND DRIVER
 AY_CLK		.EQU	CPUOSC / 4	; DEFAULT TO CPUOSC / 4
diff --git a/Source/HBIOS/cfg_master.asm b/Source/HBIOS/cfg_master.asm
index cf909f77..0c38bef2 100644
--- a/Source/HBIOS/cfg_master.asm
+++ b/Source/HBIOS/cfg_master.asm
@@ -296,6 +296,7 @@ UFBASE		.EQU	$0C		; UF: REGISTERS BASE ADR
 SN76489ENABLE	.EQU	FALSE		; SN76489 SOUND DRIVER
 AUDIOTRACE	.EQU	FALSE		; ENABLE TRACING TO CONSOLE OF SOUND DRIVER
 SN7CLK		.EQU	CPUOSC / 4	; DEFAULT TO CPUOSC / 4
+SNMODE		.EQU	SNMODE_NONE	; DRIVER MODE: SNMODE_[NONE|RC2014|VGM]
 ;
 AY38910ENABLE	.EQU	FALSE		; AY: AY-3-8910 / YM2149 SOUND DRIVER
 AY_CLK		.EQU	CPUOSC / 4	; DEFAULT TO CPUOSC / 4
diff --git a/Source/HBIOS/cfg_mbc.asm b/Source/HBIOS/cfg_mbc.asm
index 663d310a..12b3f19c 100644
--- a/Source/HBIOS/cfg_mbc.asm
+++ b/Source/HBIOS/cfg_mbc.asm
@@ -228,6 +228,7 @@ UFBASE		.EQU	$0C		; UF: REGISTERS BASE ADR
 SN76489ENABLE	.EQU	FALSE		; SN76489 SOUND DRIVER
 AUDIOTRACE	.EQU	FALSE		; ENABLE TRACING TO CONSOLE OF SOUND DRIVER
 SN7CLK		.EQU	CPUOSC / 4	; DEFAULT TO CPUOSC / 4
+SNMODE		.EQU	SNMODE_NONE	; DRIVER MODE: SNMODE_[NONE|RC2014|VGM]
 ;
 AY38910ENABLE	.EQU	FALSE		; AY: AY-3-8910 / YM2149 SOUND DRIVER
 AY_CLK		.EQU	CPUOSC / 4	; DEFAULT TO CPUOSC / 4
diff --git a/Source/HBIOS/cfg_mk4.asm b/Source/HBIOS/cfg_mk4.asm
index ac49671d..5e5ea085 100644
--- a/Source/HBIOS/cfg_mk4.asm
+++ b/Source/HBIOS/cfg_mk4.asm
@@ -229,6 +229,7 @@ UFBASE		.EQU	$0C		; UF: REGISTERS BASE ADR
 SN76489ENABLE	.EQU	FALSE		; SN76489 SOUND DRIVER
 AUDIOTRACE	.EQU	FALSE		; ENABLE TRACING TO CONSOLE OF SOUND DRIVER
 SN7CLK		.EQU	CPUOSC / 4	; DEFAULT TO CPUOSC / 4
+SNMODE		.EQU	SNMODE_NONE	; DRIVER MODE: SNMODE_[NONE|RC2014|VGM]
 ;
 AY38910ENABLE	.EQU	FALSE		; AY: AY-3-8910 / YM2149 SOUND DRIVER
 AY_CLK		.EQU	CPUOSC / 4	; DEFAULT TO CPUOSC / 4
diff --git a/Source/HBIOS/cfg_n8.asm b/Source/HBIOS/cfg_n8.asm
index f62e7c14..86569b96 100644
--- a/Source/HBIOS/cfg_n8.asm
+++ b/Source/HBIOS/cfg_n8.asm
@@ -227,6 +227,7 @@ FIFO_BASE	.EQU	$0C		; UF: REGISTERS BASE ADR
 SN76489ENABLE	.EQU	FALSE		; SN76489 SOUND DRIVER
 AUDIOTRACE	.EQU	FALSE		; ENABLE TRACING TO CONSOLE OF SOUND DRIVER
 SN7CLK		.EQU	CPUOSC / 4	; DEFAULT TO CPUOSC / 4
+SNMODE		.EQU	SNMODE_NONE	; DRIVER MODE: SNMODE_[NONE|RC2014|VGM]
 ;
 AY38910ENABLE	.EQU	FALSE		; AY: AY-3-8910 / YM2149 SOUND DRIVER
 AY_CLK		.EQU	CPUOSC / 4	; DEFAULT TO CPUOSC / 4
diff --git a/Source/HBIOS/cfg_rcz180.asm b/Source/HBIOS/cfg_rcz180.asm
index 5a7e91b7..eaf2141d 100644
--- a/Source/HBIOS/cfg_rcz180.asm
+++ b/Source/HBIOS/cfg_rcz180.asm
@@ -241,6 +241,7 @@ UFENABLE	.EQU	FALSE		; UF: ENABLE ECB USB FIFO DRIVER (UF.ASM)
 SN76489ENABLE	.EQU	FALSE		; SN76489 SOUND DRIVER
 AUDIOTRACE	.EQU	FALSE		; ENABLE TRACING TO CONSOLE OF SOUND DRIVER
 SN7CLK		.EQU	CPUOSC / 4	; DEFAULT TO CPUOSC / 4
+SNMODE		.EQU	SNMODE_NONE	; DRIVER MODE: SNMODE_[NONE|RC2014|VGM]
 ;
 AY38910ENABLE	.EQU	FALSE		; AY: AY-3-8910 / YM2149 SOUND DRIVER
 AY_CLK		.EQU	CPUOSC / 4	; DEFAULT TO CPUOSC / 4
diff --git a/Source/HBIOS/cfg_rcz280.asm b/Source/HBIOS/cfg_rcz280.asm
index 882dfb43..625f5e32 100644
--- a/Source/HBIOS/cfg_rcz280.asm
+++ b/Source/HBIOS/cfg_rcz280.asm
@@ -257,6 +257,7 @@ UFENABLE	.EQU	FALSE		; UF: ENABLE ECB USB FIFO DRIVER (UF.ASM)
 SN76489ENABLE	.EQU	FALSE		; SN76489 SOUND DRIVER
 AUDIOTRACE	.EQU	FALSE		; ENABLE TRACING TO CONSOLE OF SOUND DRIVER
 SN7CLK		.EQU	CPUOSC / 4	; DEFAULT TO CPUOSC / 4
+SNMODE		.EQU	SNMODE_NONE	; DRIVER MODE: SNMODE_[NONE|RC2014|VGM]
 ;
 AY38910ENABLE	.EQU	FALSE		; AY: AY-3-8910 / YM2149 SOUND DRIVER
 AY_CLK		.EQU	CPUOSC / 4	; DEFAULT TO CPUOSC / 4
diff --git a/Source/HBIOS/cfg_rcz80.asm b/Source/HBIOS/cfg_rcz80.asm
index 5c2c5825..4fbb3501 100644
--- a/Source/HBIOS/cfg_rcz80.asm
+++ b/Source/HBIOS/cfg_rcz80.asm
@@ -246,6 +246,7 @@ UFENABLE	.EQU	FALSE		; UF: ENABLE ECB USB FIFO DRIVER (UF.ASM)
 SN76489ENABLE	.EQU	FALSE		; SN76489 SOUND DRIVER
 AUDIOTRACE	.EQU	FALSE		; ENABLE TRACING TO CONSOLE OF SOUND DRIVER
 SN7CLK		.EQU	CPUOSC / 4	; DEFAULT TO CPUOSC / 4
+SNMODE		.EQU	SNMODE_RCZ80	; DRIVER MODE: SNMODE_[NONE|RC2014|VGM]
 ;
 AY38910ENABLE	.EQU	FALSE		; AY: AY-3-8910 / YM2149 SOUND DRIVER
 AY_CLK		.EQU	CPUOSC / 4	; DEFAULT TO CPUOSC / 4
diff --git a/Source/HBIOS/cfg_sbc.asm b/Source/HBIOS/cfg_sbc.asm
index 830ab4fc..19508f59 100644
--- a/Source/HBIOS/cfg_sbc.asm
+++ b/Source/HBIOS/cfg_sbc.asm
@@ -227,7 +227,8 @@ UFBASE		.EQU	$0C		; UF: REGISTERS BASE ADR
 ;
 SN76489ENABLE	.EQU	FALSE		; SN76489 SOUND DRIVER
 AUDIOTRACE	.EQU	FALSE		; ENABLE TRACING TO CONSOLE OF SOUND DRIVER
-SN7CLK		.EQU	CPUOSC / 4	; DEFAULT TO CPUOSC / 4
+SN7CLK		.EQU	3575950		; DEFAULT OSCILLATOR
+SNMODE		.EQU	SNMODE_VGM	; DRIVER MODE: SNMODE_[NONE|RC2014|VGM]
 ;
 AY38910ENABLE	.EQU	FALSE		; AY: AY-3-8910 / YM2149 SOUND DRIVER
 AY_CLK		.EQU	CPUOSC / 4	; DEFAULT TO CPUOSC / 4
diff --git a/Source/HBIOS/cfg_scz180.asm b/Source/HBIOS/cfg_scz180.asm
index 265ea1e2..82daba78 100644
--- a/Source/HBIOS/cfg_scz180.asm
+++ b/Source/HBIOS/cfg_scz180.asm
@@ -236,6 +236,7 @@ UFENABLE	.EQU	FALSE		; UF: ENABLE ECB USB FIFO DRIVER (UF.ASM)
 SN76489ENABLE	.EQU	FALSE		; SN76489 SOUND DRIVER
 AUDIOTRACE	.EQU	FALSE		; ENABLE TRACING TO CONSOLE OF SOUND DRIVER
 SN7CLK		.EQU	CPUOSC / 4	; DEFAULT TO CPUOSC / 4
+SNMODE		.EQU	SNMODE_NONE	; DRIVER MODE: SNMODE_[NONE|RC2014|VGM]
 ;
 AY38910ENABLE	.EQU	FALSE		; AY: AY-3-8910 / YM2149 SOUND DRIVER
 AY_CLK		.EQU	CPUOSC / 4	; DEFAULT TO CPUOSC / 4
diff --git a/Source/HBIOS/sn76489.asm b/Source/HBIOS/sn76489.asm
index 812ea274..e7aa315b 100644
--- a/Source/HBIOS/sn76489.asm
+++ b/Source/HBIOS/sn76489.asm
@@ -12,9 +12,18 @@
 ; CONSTANTS
 ;======================================================================
 ;
+#IF (PLATFORM == PLT_SBC) & (SNMODE == SNMODE_VGM)
+SN76489_PORT_LEFT	.EQU	$C6	; PORTS FOR ACCESSING THE SN76489 CHIP (LEFT)
+SN76489_PORT_RIGHT	.EQU	$C7	; PORTS FOR ACCESSING THE SN76489 CHIP (RIGHT)
+;SN7CLK			.EQU	3575950	; CLOCK SPEED DRIVING THE SN76489 CHIPS
+#ENDIF
 
+#IF (PLATFORM == PLT_RCZ80) & (SNMODE == SNMODE_RCZ80)
 SN76489_PORT_LEFT	.EQU	$FF	; PORTS FOR ACCESSING THE SN76489 CHIP (LEFT)
 SN76489_PORT_RIGHT	.EQU	$FB	; PORTS FOR ACCESSING THE SN76489 CHIP (RIGHT)
+;SN7CLK			.EQU	CPUOSC/4; DEFAULT TO CPUOSC / 4
+#ENDIF
+
 SN7_IDAT		.EQU	0
 SN7_TONECNT		.EQU	3	; COUNT NUMBER OF TONE CHANNELS
 SN7_NOISECNT		.EQU	1	; COUNT NUMBER OF NOISE CHANNELS
@@ -263,7 +272,7 @@ SN7_APPLY_VOL:				; APPLY VOLUME TO BOTH LEFT AND RIGHT CHANNELS
 
 #IFDEF SBCV2004
 	LD	A,(HB_RTCVAL)
-	OR	%11110111		; SBC-V2-004+ CHANGE TO
+	AND	%11110111		; SBC-V2-004+ CHANGE TO
 	OUT	(RTCIO),A		; NORMAL CLOCK SPEED
 #ENDIF
 
@@ -308,7 +317,7 @@ SN7_APPLY_PRD:
 
 #IFDEF SBCV2004
 	LD	A,(HB_RTCVAL)
-	OR	%11110111		; SBC-V2-004+ CHANGE TO
+	AND	%11110111		; SBC-V2-004+ CHANGE TO
 	OUT	(RTCIO),A		; NORMAL CLOCK SPEED
 #ENDIF
 
@@ -345,7 +354,7 @@ SN7_APPLY_PRD:
 
 #IFDEF SBCV2004
 	LD	A,(HB_RTCVAL)
-	OR	%11110111		; SBC-V2-004+ CHANGE TO
+	AND	%11110111		; SBC-V2-004+ CHANGE TO
 	OUT	(RTCIO),A		; NORMAL CLOCK SPEED
 #ENDIF
 
@@ -403,7 +412,7 @@ SNT_PLAY		.DB	"\r\nSN7_PLAY CH: $"
 SNT_REGWR		.DB	"\r\nOUT SN76489, $"
 #ENDIF
 
-; THE FREQUENCY BY QUARTER TONE STARTING AT A0# OCATVE 0
+; THE FREQUENCY BY QUARTER TONE STARTING AT A0# OCTAVE 0
 ; USED TO MAP EACH OCTAVE (DIV BY 2 TO JUMP AN OCTAVE UP)
 ; FIRST PLAYABLE NOTE WILL BE $2E
 ; ASSUMING A CLOCK OF 1843200 THIS MAPS TO
diff --git a/Source/HBIOS/std.asm b/Source/HBIOS/std.asm
index 5630860c..8aee5ca4 100644
--- a/Source/HBIOS/std.asm
+++ b/Source/HBIOS/std.asm
@@ -200,7 +200,7 @@ SDMODE_MK4	.EQU	7		; MARK IV
 SDMODE_SC	.EQU	8		; SC (Steve Cousins)
 SDMODE_MT	.EQU	9		; MT (Shift register SPI WIZNET for RC2014)
 ;
-; SOUND CHIP MODE SELECTIONS
+; AY SOUND CHIP MODE SELECTIONS
 ;
 AYMODE_NONE	.EQU	0
 AYMODE_N8	.EQU	1		; N8 BUILT-IN SOUND
@@ -210,6 +210,12 @@ AYMODE_RCZ180	.EQU	4		; RC2014 SOUND MODULE BY ED BRINDLEY ON Z180
 AYMODE_MSX	.EQU	5		; RC2014 SOUND MODULE REV6 BY ED BRINDLEY ON Z80/Z180 AT MSX PORTS
 AYMODE_LINC	.EQU	6		; LINC Z50 AY SOUND CARD
 ;
+; SN SOUND CHIP MODE SELECTIONS
+; 
+SNMODE_NONE	.EQU	0
+SNMODE_RCZ80	.EQU	1		; RC2014 SOUND MODULE
+SNMODE_VGM	.EQU	2		; VGM ECB BOARD
+;
 ; TMS VIDEO MODE SELECTIONS
 ;
 TMSMODE_NONE	.EQU	0