Update nascom.asm

Source/HBIOS/nascom.asm

@@ -4461,13 +4461,13 @@ PLAY:	CALL    GETINT          ; GET OCTAVE
 	LD	A,(HL)		; LOAD 2ND ARG
 	INC	HL		; IN DE
 	LD	E,A		; WHICH IS THE 
-	LD	A,(HL)		; DURATION
+	LD	A,(HL)		; PITCH
 	LD	D,A
 
 	PUSH	DE		; SETUP ARGS IN HL
 	POP	HL		; AND DE
-	POP	DE
-
+	POP	DE		; DE = FREQUENCY
+				; HL = PITCH
 	LD	A,8		; DIVIDE THE
 	SUB	B		; FREQUENCY BASED
 	JR	Z,SPK_OCTOK	; ON THE OCTAVE
@@ -4482,18 +4482,21 @@ SPK_OCTDIV:
 	JR	NC,SPK_OCTOK	; SET TO MAXIMUM
 	LD	HL,$FFFF	; IF OVERFLOW
 
-SPK_OCTOK:		
+SPK_OCTOK:
+
+	CALL	DISP
+
 	POP	BC		; MULTIPLY CHL X B
-	PUSH	DE		; SAVE
+	PUSH	HL		; SAVE
 
-	EX	DE,HL
 	LD	C,0
 	LD	H,C
 	LD	L,C
+	CCF
 MULSKP:	ADD	HL,DE
-	JR	NC,MULDLP
+	JR	NC,MULDLP 
 	INC	C
-MULDLP:	DJNZ	MULSKP
+MULDLP:	DJNZ	MULSKP		; DIVIDE BY 8
 
 	SRL	C		; 0>C>C	; BCHL = BCHL / 2
 	RR	H		; C>H>C ;
@@ -4506,7 +4509,10 @@ MULDLP:	DJNZ	MULSKP
 	RR	L		; C>L>C	;
 
 	POP	DE
-;
+	EX	DE,HL
+
+	CALL	DISP
+
 ;	The following SPK_BEEPER routine is a modification of code from 
 ;	"The Complete SPECTRUM ROM DISSASSEMBLY" by Dr Ian Logan & Dr Frank O’Hara
 ;	https://www.esocop.org/docs/CompleteSpectrumROMDisassemblyThe.pdf
@@ -4580,12 +4586,12 @@ RTCVAL	.DB	0
 SET_DUR_TBL:
 	LD	B,BF_SYSGET		; GET CPU SPEED
 	LD	C,BF_SYSGET_CPUINFO	; FROM HBIOS
-	RST	08
+	RST	08			; IN DE
 
 	PUSH	DE			; SAVE FOR CALCULATION
 	POP	BC			; - CPUKHZ - (2 * CPUKHZ)
 
-	LD	H,E			; DEHL = HL * 256
+	LD	H,E			; DEHL = DE * 256
 	LD	E,D
 	LD	D,0
 	LD	L,D
@@ -4602,7 +4608,12 @@ FRQ_AJ1:SLA	C		; C<C<0	; DEHL = DEHL - (2 * CPUKHZ)
 	SBC	HL,BC
 	JR	NC,FRQ_AJ2
 	DEC	DE
-FRQ_AJ2:PUSH	HL			; DEHL = CPUKHZ / 8) / FREQUENCY
+
+FRQ_AJ2:	; AT THIS POINT DEHL = CPUKHZ * 125 E.G.  9982 KHZ * 125 = 0012:DE14
+
+;	CALL	DISP
+
+	PUSH	HL			; DEHL = CPUKHZ / 8) / FREQUENCY
 	POP	IX			; HLIX = DENOMINATOR
 	EX	DE,HL
 
@@ -4633,17 +4644,13 @@ DIV_CANSUB:
 	DEC	A
 	JR	NZ, DIV_LP		; IX = RESULT
 
-;	LD	DE,$FFFF		; IF OVERFLOW SET TO
-;	LD	A,H
-;	OR	L			; MAXIMUM. OCCURS
-;	CALL	NZ,DISP
-;	JR	NZ,DUROVF		; FOR 10MHZ+
-
 	PUSH	IX			; SAVE RESULT IN TABLE
 	POP	DE
 DUROVF:	LD	(IY+2),E
 	LD	(IY+3),D
 
+;	CALL	DISP
+
 	LD	DE,4			; POINT TO NEXT TABLE 
 	ADD	IY,DE			; ENTRY TO UPDATE
 
@@ -4652,6 +4659,7 @@ DUROVF:	LD	(IY+2),E
 
 	POP	BC			; RETREIVE THE
 	DJNZ	TBL_LP			; LOOP COUNTER
+
 	RET
 
 DISP:	
@@ -4663,6 +4671,9 @@ DISP:
 	POP	BC
 	CALL	PRTHEXWORD
 
+	LD	A,' '
+	CALL	MONOUT
+
 	PUSH	HL
 	POP	BC
 	CALL	PRTHEXWORD
@@ -4748,7 +4759,7 @@ FRQDURTBL:
 	.DW	$1875, $0, $19F4, $0	; G, G#
 	.DW	$1B80, $0, $1D22, $0	; A, A#
 	.DW	$1EDE, $0		; B
-
+;
 FDTBSIZ	.EQU	($-FRQDURTBL)/4
 
 SLACK	.EQU	(BAS_END - $)