diff --git a/Source/Doc/Architecture.md b/Source/Doc/Architecture.md
index aeff3143..1d430e74 100644
--- a/Source/Doc/Architecture.md
+++ b/Source/Doc/Architecture.md
@@ -1404,7 +1404,7 @@ The value corresponds to standard musical notes.  The value allows
 for selection of a quarter of a semitone by giving a value between 0
 and up to the drivers maximum supported value. The lowest note is (0).
 
-For the SN76490 chip, 0 corresponds to note A1# and the value 249 is
+For the SN76489 chip, 0 corresponds to note A1# and the value 249 is
 the maximum supported value, and it corresponds to note C7.
 
 ### Function 0x54 -- Sound Play (SNDPLAY)
diff --git a/Source/HBIOS/ay.asm b/Source/HBIOS/ay.asm
index 7deabcf0..6c03d2eb 100644
--- a/Source/HBIOS/ay.asm
+++ b/Source/HBIOS/ay.asm
@@ -57,10 +57,10 @@ AY_INIT1:
 	CALL	AY_BEEP
 AY_INIT2:
 	LD	D,AY_R7ENAB		; SET MIXER CONTROL / IO ENABLE
-	LD	E,$FF			; $FF - 11 111 111
-	CALL	AY_WRTPSG		; I/O PORTS DISABLED, NOISE CHANNEL C, B, A DISABLE, TONE CHANNEL C, B, A DISABLE
+	LD	E,$F8			; $FF - 11 111 111
+	CALL	AY_WRTPSG		; I/O PORTS DISABLED, NOISE CHANNEL C, B, A DISABLE, TONE CHANNEL C, B, A ENABLE
 ;  
-	LD	B,2
+	LD	B,3
 	LD	D,AY_R8AVOL		; SET VOLUME TO 0
 	LD	E,$00	
 AY_QUIET:
@@ -73,7 +73,7 @@ AY_QUIET:
 ;	
 AY_BEEP:
 	LD	D,AY_R2CHBP		; SET TONE PERIOD 
-	LD	E,$55			; CHANNEL B  - R00 & R01
+	LD	E,$55			; CHANNEL B  - R02 & R03
 	CALL	AY_WRTPSG		; $0055 = XXXX0000 01010101 
 	LD	D,AY_R3CHBP
 	LD	E,0
diff --git a/Source/HBIOS/ay38910.asm b/Source/HBIOS/ay38910.asm
index 56e48f39..8fe13b25 100644
--- a/Source/HBIOS/ay38910.asm
+++ b/Source/HBIOS/ay38910.asm
@@ -30,13 +30,10 @@ AY_RDAT		.EQU	$60
 ;
 ;	REGISTERS
 ;
-AY_R0CHAP	.EQU	$00
-AY_R1CHAP	.EQU	$01
 AY_R2CHBP	.EQU	$02
 AY_R3CHBP	.EQU	$03
 AY_R7ENAB	.EQU	$07
 AY_R8AVOL	.EQU	$08
-AY_R9BVOL	.EQU	$09 
 ;
 ;======================================================================
 ;
@@ -66,22 +63,9 @@ SBCV2004	.EQU	1		; USE SBC-V2-004 HALF CLOCK DIVIDER
 AY_TONECNT	.EQU	3		; COUNT NUMBER OF TONE CHANNELS
 AY_NOISECNT	.EQU	1		; COUNT NUMBER OF NOISE CHANNELS
 ;
-AY_CLKDIVIDER	.EQU	2
-AY_CLK		.EQU	CPUOSC / AY_CLKDIVIDER
-SN7RATIO	.EQU	AY_CLK * 100 / 32
-
-
-AY_FIRST_NOTE	.EQU	5827		; A1#
-AY_LAST_NOTE	.EQU	209300		; C7
-
-A1S		.EQU	SN7RATIO / AY_FIRST_NOTE
-C7		.EQU	SN7RATIO / AY_LAST_NOTE
-
-       .ECHO "AY-3-8910: range of A1# (period: "
-       .ECHO A1S
-       .ECHO ") to C7 (period: "
-       .ECHO C7
-       .ECHO ")\n"
+AY_PHICLK	.EQU	3579500
+AY_CLKDIV	.EQU	2
+AY_CLK		.EQU	AY_PHICLK / AY_CLKDIV
 ;
 #INCLUDE "audio.inc"
 ;
@@ -92,7 +76,7 @@ C7		.EQU	SN7RATIO / AY_LAST_NOTE
 ;	ANNOUNCE DEVICE ON CONSOLE. ACTIVATE DEVICE IF REQUIRED.
 ;	SETUP FUNCTION TABLES. SETUP THE DEVICE.
 ;	ANNOUNCE DEVICE WITH BEEP. SET VOLUME OFF.
-;	RETURN SUCCESS STATUS
+;	RETURN INITIALIZATION STATUS
 ;
 AY38910_INIT:
 	CALL	NEWLINE			; ANNOUNCE
@@ -111,38 +95,69 @@ AY38910_INIT:
 	LD	DE, AY_IDAT		; BC := FUNCTION TABLE ADDRESS
 	CALL	SND_ADDENT		; DE := INSTANCE DATA PTR
 ;
-	CALL	AY_RESET		; SET DEFAULT CHIP CONFIGURATION
-;	CALL	AY_BEEP			; PLAY INITIALIZATION BEEP
-;	CALL	AY_VOLUME_OFF		; MAKE QUIET
+	CALL	AY_INIT			; SET DEFAULT CHIP CONFIGURATION
 ;
-	RET
+	LD	E,$07			; SET VOLUME TO 50%
+	CALL	AY_SETV			; ON ALL CHANNELS
+;
+	LD	D,AY_R2CHBP		; BEEP ON CHANNEL B (CENTER)
+	LD	E,$55
+	CALL	AY_WRTPSG		; R02 = $55 = 01010101
+	LD	D,AY_R3CHBP
+	LD	E,$00
+	CALL	AY_WRTPSG		; R03 = $00 = XXXX0000
+;  
+	CALL	LDELAY			; HALF SECOND 
+;
+	LD	E,$00			; SET VOLUME OFF
+	CALL	AY_SETV			; ON ALL CHANNELS	
+;
+;	RET
 ;
 ;======================================================================
-;	SOUND DRIVER FUNCTION - RESET
+;	INITIALIZE DEVICE
 ;======================================================================
 ;
-AY_RESET:
-	AUDTRACE(TRACE_INIT)
-;
+AY_INIT:
 	LD	D,AY_R7ENAB		; SET MIXER CONTROL / IO ENABLE
 	LD	E,$F8			; $F8 - 11 111 000
 	CALL	AY_WRTPSG		; I/O PORTS = OUTPUT, NOISE CHANNEL C, B, A DISABLE, TONE CHANNEL C, B, A ENABLE
-
-;	CALL	AY_VOLUME_OFF		; TURN VOLUME OFF
-;	RET				; AND RETURN SUCCESS
-
-AY_VOLUME_OFF:
-	AUDTRACE(TRACE_VOLUME_OFF)
-
+	RET
+;
+;======================================================================
+;	SET VOLUME ALL CHANNELS
+;======================================================================
+;
+AY_SETV:
 	LD	B,AY_TONECNT		; NUMBER OF CHANNELS		
 	LD	D,AY_R8AVOL		; BASE REGISTER FOR VOLUME
-	LD	E,$00			; AMPLITUDE 0
-AY_V:
-	CALL	AY_WRTPSG		; CYCLING THROUGH ALL CHANNELS
+AY_SV:	CALL	AY_WRTPSG		; CYCLING THROUGH ALL CHANNELS
 	INC	D
-	DJNZ	AY_V
+	DJNZ	AY_SV
+	RET
 ;
-	XOR	A			; SIGNAL SUCCESS		
+;======================================================================
+;	SOUND DRIVER FUNCTION - RESET
+;
+;	INITIALIZE DEVICE. SET VOLUME OFF. RESET VOLUME AND TONE VARIABLES.
+;
+;======================================================================
+;
+AY_RESET:
+	AUDTRACE(TRACE_INIT)
+;
+	CALL	AY_INIT			; SET DEFAULT CHIP CONFIGURATION
+;
+	AUDTRACE(TRACE_VOLUME_OFF)
+	LD	E,0			; SET VOLUME OFF
+	CALL	AY_SETV			; ON ALL CHANNELS
+;
+	XOR	A			; SIGNAL SUCCESS
+	LD	(PENDING_VOLUME),A	; SET VOLUME TO ZERO
+	LD	H,A
+	LD	L,A
+	LD	(PENDING_PERIOD),HL	; SET TONE PERIOD TO ZERO
+;	
 	RET
 ;
 ;======================================================================
@@ -210,7 +225,7 @@ AY_NOTE:
 	LD	H, (HL)
 	LD	L, A
 
-	JR	AY_PERIOD		; APPLY PERIOD
+	JR	AY_PERIOD		; APPLY NOTE PERIOD
 
 AY_NOTE1:
 	OR	$FF			; NOT IMPLEMENTED YET
@@ -349,7 +364,6 @@ AY_APPLY_PRD:
 	LD	E,H			; WRITE THE UPPER
 	CALL	AY_WRTPSG       	; 8-BITS OF THE TONE PERIOD
 ;
-
 	POP	AF
 	POP	BC
 	POP	DE
@@ -391,8 +405,8 @@ AY_WRTPSG:
 ;
 ;======================================================================
 ;
-PENDING_PERIOD		.DW	0		; PENDING PERIOD (12 BITS)
-PENDING_VOLUME		.DB	0		; PENDING VOL (8 BITS)
+PENDING_PERIOD		.DW	0	; PENDING PERIOD (12 BITS)
+PENDING_VOLUME		.DB	0	; PENDING VOL (8 BITS)
 
 #IF AUDIOTRACE
 TRACE_INIT		.DB	"\r\nAY_INIT CALLED\r\n$"
@@ -405,262 +419,137 @@ TRACE_PERIOD_SET	.DB	"\r\nAY_PERIOD_SET CH: $"
 TRACE_PERIOD		.DB	", PERIOD: $"
 TRACE_NEWLINE		.DB	"\r\n$"
 #ENDIF
-
-; THE FREQUENCY BY QUATER TONE STARTING AT A1#
+;
+; THE FREQUENCY BY QUARTER TONE STARTING AT A1#
+;
+;======================================================================
+;	FREQUENCY TONE TABLE
+;======================================================================
+;
+;		PERIOD	OCTAVE	NOTE	MIDI#
+;
 AY3NOTETBL:
-	.DW	A1S
-	.DW	SN7RATIO / 5912
-	.DW	SN7RATIO / 5998
-	.DW	SN7RATIO / 6085
-	.DW	SN7RATIO / 6174
-	.DW	SN7RATIO / 6264
-	.DW	SN7RATIO / 6355
-	.DW	SN7RATIO / 6447
-	.DW	SN7RATIO / 6541
-	.DW	SN7RATIO / 6636
-	.DW	SN7RATIO / 6733
-	.DW	SN7RATIO / 6831
-	.DW	SN7RATIO / 6930
-	.DW	SN7RATIO / 7031
-	.DW	SN7RATIO / 7133
-	.DW	SN7RATIO / 7237
-	.DW	SN7RATIO / 7342
-	.DW	SN7RATIO / 7449
-	.DW	SN7RATIO / 7557
-	.DW	SN7RATIO / 7667
-	.DW	SN7RATIO / 7778
-	.DW	SN7RATIO / 7891
-	.DW	SN7RATIO / 8006
-	.DW	SN7RATIO / 8122
-	.DW	SN7RATIO / 8241
-	.DW	SN7RATIO / 8361
-	.DW	SN7RATIO / 8482
-	.DW	SN7RATIO / 8606
-	.DW	SN7RATIO / 8731
-	.DW	SN7RATIO / 8858
-	.DW	SN7RATIO / 8987
-	.DW	SN7RATIO / 9118
-	.DW	SN7RATIO / 9250
-	.DW	SN7RATIO / 9385
-	.DW	SN7RATIO / 9521
-	.DW	SN7RATIO / 9660
-	.DW	SN7RATIO / 9800
-	.DW	SN7RATIO / 9943
-	.DW	SN7RATIO / 10087
-	.DW	SN7RATIO / 10234
-	.DW	SN7RATIO / 10383
-	.DW	SN7RATIO / 10534
-	.DW	SN7RATIO / 10687
-	.DW	SN7RATIO / 10843
-	.DW	SN7RATIO / 11000
-	.DW	SN7RATIO / 11160
-	.DW	SN7RATIO / 11322
-	.DW	SN7RATIO / 11487
-	.DW	SN7RATIO / 11654
-	.DW	SN7RATIO / 11824
-	.DW	SN7RATIO / 11995
-	.DW	SN7RATIO / 12170
-	.DW	SN7RATIO / 12347
-	.DW	SN7RATIO / 12527
-	.DW	SN7RATIO / 12709
-	.DW	SN7RATIO / 12894
-	.DW	SN7RATIO / 13081
-	.DW	SN7RATIO / 13271
-	.DW	SN7RATIO / 13464
-	.DW	SN7RATIO / 13660
-	.DW	SN7RATIO / 13859
-	.DW	SN7RATIO / 14061
-	.DW	SN7RATIO / 14265
-	.DW	SN7RATIO / 14473
-	.DW	SN7RATIO / 14683
-	.DW	SN7RATIO / 14897
-	.DW	SN7RATIO / 15113
-	.DW	SN7RATIO / 15333
-	.DW	SN7RATIO / 15556
-	.DW	SN7RATIO / 15782
-	.DW	SN7RATIO / 16012
-	.DW	SN7RATIO / 16245
-	.DW	SN7RATIO / 16481
-	.DW	SN7RATIO / 16721
-	.DW	SN7RATIO / 16964
-	.DW	SN7RATIO / 17211
-	.DW	SN7RATIO / 17461
-	.DW	SN7RATIO / 17715
-	.DW	SN7RATIO / 17973
-	.DW	SN7RATIO / 18234
-	.DW	SN7RATIO / 18500
-	.DW	SN7RATIO / 18769
-	.DW	SN7RATIO / 19042
-	.DW	SN7RATIO / 19319
-	.DW	SN7RATIO / 19600
-	.DW	SN7RATIO / 19885
-	.DW	SN7RATIO / 20174
-	.DW	SN7RATIO / 20468
-	.DW	SN7RATIO / 20765
-	.DW	SN7RATIO / 21067
-	.DW	SN7RATIO / 21373
-	.DW	SN7RATIO / 21684
-	.DW	SN7RATIO / 22000
-	.DW	SN7RATIO / 22320
-	.DW	SN7RATIO / 22645
-	.DW	SN7RATIO / 22974
-	.DW	SN7RATIO / 23308
-	.DW	SN7RATIO / 23647
-	.DW	SN7RATIO / 23991
-	.DW	SN7RATIO / 24340
-	.DW	SN7RATIO / 24694
-	.DW	SN7RATIO / 25053
-	.DW	SN7RATIO / 25418
-	.DW	SN7RATIO / 25787
-	.DW	SN7RATIO / 26163
-	.DW	SN7RATIO / 26544
-	.DW	SN7RATIO / 26930
-	.DW	SN7RATIO / 27321
-	.DW	SN7RATIO / 27718
-	.DW	SN7RATIO / 28121
-	.DW	SN7RATIO / 28530
-	.DW	SN7RATIO / 28945
-	.DW	SN7RATIO / 29366
-	.DW	SN7RATIO / 29793
-	.DW	SN7RATIO / 30226
-	.DW	SN7RATIO / 30666
-	.DW	SN7RATIO / 31113
-	.DW	SN7RATIO / 31566
-	.DW	SN7RATIO / 32025
-	.DW	SN7RATIO / 32490
-	.DW	SN7RATIO / 32963
-	.DW	SN7RATIO / 33442
-	.DW	SN7RATIO / 33929
-	.DW	SN7RATIO / 34422
-	.DW	SN7RATIO / 34923
-	.DW	SN7RATIO / 35431
-	.DW	SN7RATIO / 35946
-	.DW	SN7RATIO / 36469
-	.DW	SN7RATIO / 36999
-	.DW	SN7RATIO / 37537
-	.DW	SN7RATIO / 38083
-	.DW	SN7RATIO / 38637
-	.DW	SN7RATIO / 39200
-	.DW	SN7RATIO / 39770
-	.DW	SN7RATIO / 40349
-	.DW	SN7RATIO / 40936
-	.DW	SN7RATIO / 41530
-	.DW	SN7RATIO / 42134
-	.DW	SN7RATIO / 42747
-	.DW	SN7RATIO / 43369
-	.DW	SN7RATIO / 44000
-	.DW	SN7RATIO / 44640
-	.DW	SN7RATIO / 45289
-	.DW	SN7RATIO / 45948
-	.DW	SN7RATIO / 46616
-	.DW	SN7RATIO / 47294
-	.DW	SN7RATIO / 47982
-	.DW	SN7RATIO / 48680
-	.DW	SN7RATIO / 49388
-	.DW	SN7RATIO / 50106
-	.DW	SN7RATIO / 50835
-	.DW	SN7RATIO / 51575
-	.DW	SN7RATIO / 52325
-	.DW	SN7RATIO / 53086
-	.DW	SN7RATIO / 53858
-	.DW	SN7RATIO / 54642
-	.DW	SN7RATIO / 55437
-	.DW	SN7RATIO / 56243
-	.DW	SN7RATIO / 57061
-	.DW	SN7RATIO / 57891
-	.DW	SN7RATIO / 58733
-	.DW	SN7RATIO / 59587
-	.DW	SN7RATIO / 60454
-	.DW	SN7RATIO / 61333
-	.DW	SN7RATIO / 62225
-	.DW	SN7RATIO / 63130
-	.DW	SN7RATIO / 64048
-	.DW	SN7RATIO / 64980
-	.DW	SN7RATIO / 65925
-	.DW	SN7RATIO / 66884
-	.DW	SN7RATIO / 67857
-	.DW	SN7RATIO / 68844
-	.DW	SN7RATIO / 69846
-	.DW	SN7RATIO / 70862
-	.DW	SN7RATIO / 71893
-	.DW	SN7RATIO / 72938
-	.DW	SN7RATIO / 73999
-	.DW	SN7RATIO / 75075
-	.DW	SN7RATIO / 76167
-	.DW	SN7RATIO / 77275
-	.DW	SN7RATIO / 78399
-	.DW	SN7RATIO / 79539
-	.DW	SN7RATIO / 80696
-	.DW	SN7RATIO / 81870
-	.DW	SN7RATIO / 83061
-	.DW	SN7RATIO / 84269
-	.DW	SN7RATIO / 85495
-	.DW	SN7RATIO / 86738
-	.DW	SN7RATIO / 88000
-	.DW	SN7RATIO / 89280
-	.DW	SN7RATIO / 90579
-	.DW	SN7RATIO / 91896
-	.DW	SN7RATIO / 93233
-	.DW	SN7RATIO / 94589
-	.DW	SN7RATIO / 95965
-	.DW	SN7RATIO / 97361
-	.DW	SN7RATIO / 98777
-	.DW	SN7RATIO / 100214
-	.DW	SN7RATIO / 101671
-	.DW	SN7RATIO / 103150
-	.DW	SN7RATIO / 104650
-	.DW	SN7RATIO / 106172
-	.DW	SN7RATIO / 107716
-	.DW	SN7RATIO / 109283
-	.DW	SN7RATIO / 110873
-	.DW	SN7RATIO / 112486
-	.DW	SN7RATIO / 114122
-	.DW	SN7RATIO / 115782
-	.DW	SN7RATIO / 117466
-	.DW	SN7RATIO / 119175
-	.DW	SN7RATIO / 120908
-	.DW	SN7RATIO / 122667
-	.DW	SN7RATIO / 124451
-	.DW	SN7RATIO / 126261
-	.DW	SN7RATIO / 128098
-	.DW	SN7RATIO / 129961
-	.DW	SN7RATIO / 131851
-	.DW	SN7RATIO / 133769
-	.DW	SN7RATIO / 135715
-	.DW	SN7RATIO / 137689
-	.DW	SN7RATIO / 139691
-	.DW	SN7RATIO / 141723
-	.DW	SN7RATIO / 143784
-	.DW	SN7RATIO / 145876
-	.DW	SN7RATIO / 147998
-	.DW	SN7RATIO / 150151
-	.DW	SN7RATIO / 152335
-	.DW	SN7RATIO / 154550
-	.DW	SN7RATIO / 156798
-	.DW	SN7RATIO / 159079
-	.DW	SN7RATIO / 161393
-	.DW	SN7RATIO / 163740
-	.DW	SN7RATIO / 166122
-	.DW	SN7RATIO / 168538
-	.DW	SN7RATIO / 170990
-	.DW	SN7RATIO / 173477
-	.DW	SN7RATIO / 176000
-	.DW	SN7RATIO / 178560
-	.DW	SN7RATIO / 181157
-	.DW	SN7RATIO / 183792
-	.DW	SN7RATIO / 186466
-	.DW	SN7RATIO / 189178
-	.DW	SN7RATIO / 191930
-	.DW	SN7RATIO / 194722
-	.DW	SN7RATIO / 197553
-	.DW	SN7RATIO / 200426
-	.DW	SN7RATIO / 203342
-	.DW	SN7RATIO / 206299
-	.DW	C7
+;	.DW	6842	;0		12
+;	.DW	6458	;0		13
+;	.DW	6096	;0		14
+;	.DW	5751	;0		15
+;	.DW	5430	;0		16
+;	.DW	5124	;0		17
+;	.DW	4838	;0		18
+;	.DW	4566	;0		19
+;	.DW	4309	;0		20
+	.DW	4068	;0	A0	21
+	.DW	3839	;0		22
+	.DW	3624	;0		23
+	.DW	3421	;1		24
+	.DW	3228 	;1		25
+	.DW	3047 	;1		26
+	.DW	2876 	;1		27
+	.DW	2715 	;1		28
+	.DW	2563 	;1		29
+	.DW	2419 	;1		30
+	.DW	2283 	;1		31
+	.DW	2155 	;1		32
+	.DW	2034 	;1		33
+	.DW	1920 	;1		34
+	.DW	1812	;1		35
+	.DW	1710	;2		36
+	.DW	1614 	;2		37
+	.DW	1524 	;2		38
+	.DW	1438 	;2		39
+	.DW	1357 	;2		40
+	.DW	1281 	;2		41
+	.DW	1209 	;2		42
+	.DW	1141 	;2		43
+	.DW	1077 	;2		44
+	.DW	1017 	;2		45
+	.DW	960  	;2		46
+	.DW	906	;2		47
+	.DW	855	;3		48
+	.DW	807 	;3		49
+	.DW	762 	;3		50
+	.DW	719 	;3		51
+	.DW	679 	;3		52
+	.DW	641 	;3		53
+	.DW	605 	;3		54
+	.DW	571 	;3		55
+	.DW	539 	;3		56
+	.DW	508 	;3		57
+	.DW	480 	;3		58
+	.DW	453	;3		59
+	.DW	428	;4		60
+	.DW	404 	;4		61
+	.DW	381 	;4		62
+	.DW	360 	;4		63
+	.DW	339 	;4		64
+	.DW	320 	;4		65
+	.DW	302 	;4		66
+	.DW	285 	;4		67
+	.DW	269 	;4		68
+	.DW	254 	;4		69
+	.DW	240 	;4		70
+	.DW	226	;4		71
+	.DW	214	;5		72
+	.DW	202 	;5		73
+	.DW	190 	;5		74
+	.DW	180 	;5		75
+	.DW	170 	;5		76
+	.DW	160 	;5		77
+	.DW	151 	;5		78
+	.DW	143 	;5		79
+	.DW	135 	;5		80
+	.DW	127 	;5		81
+	.DW	120 	;5		82
+	.DW	113	;5		83
+	.DW	107	;6		84
+	.DW	101 	;6		85
+	.DW	95  	;6		86
+	.DW	90  	;6		87
+	.DW	85  	;6		88
+	.DW	80  	;6		89
+	.DW	76  	;6		90
+	.DW	71  	;6		91
+	.DW	67  	;6		92
+	.DW	64  	;6		93
+	.DW	60  	;6		94
+	.DW	57	;6		95
+	.DW	53	;7		96
+	.DW	50 	;7		97
+	.DW	48 	;7		98
+	.DW	45 	;7		99
+	.DW	42 	;7		100
+	.DW	40 	;7		101
+	.DW	38 	;7		102
+	.DW	36 	;7		103
+	.DW	34 	;7		104
+	.DW	32 	;7		105
+	.DW	30 	;7		106
+	.DW	28	;7		107
+	.DW	27	;8		108
+	.DW	25 	;8		109
+	.DW	24 	;8		110
+	.DW	22 	;8		111
+	.DW	21 	;8		112
+	.DW	20 	;8		113
+	.DW	19 	;8		114
+	.DW	18 	;8		115
+	.DW	17 	;8		116
+	.DW	16 	;8		117
+	.DW	15 	;8		118
+	.DW	14	;8		119
+	.DW	13	;9		120
+	.DW	13	;9		121
+	.DW	12	;9		122
+	.DW	11	;9		123
+	.DW	11	;9		124
+	.DW	10	;9		125
+	.DW	9 	;9		126
+	.DW	9 	;9		127
+	.DW	8 	;9		128
 
 SIZ_AY3NOTETBL	.EQU	$ - AY3NOTETBL
-		.ECHO	"SN76489 approx "
-		.ECHO	SIZ_AY3NOTETBL / 2 / 4 /12
+		.ECHO	"AY-3-8910 approx "
+		.ECHO	SIZ_AY3NOTETBL / 2 / 12
 		.ECHO	" Octaves.  Last note index supported: "
 
 		.ECHO SIZ_AY3NOTETBL / 2
diff --git a/Source/HBIOS/sn76489.asm b/Source/HBIOS/sn76489.asm
index 0293dd15..5d849893 100644
--- a/Source/HBIOS/sn76489.asm
+++ b/Source/HBIOS/sn76489.asm
@@ -364,7 +364,7 @@ TRACE_PERIOD		.DB	", PERIOD: $"
 TRACE_NEWLINE		.DB	"\r\n$"
 #ENDIF
 
-; THE FREQUENCY BY QUATER TONE STARTING AT A1#
+; THE FREQUENCY BY QUARTER TONE STARTING AT A1#
 SN7NOTETBL:
 	.DW	A1S
 	.DW	SN7RATIO / 5912