Mask AY_NOISEPER (reg-6) with 0x1F, as Cybernoid reg data has a value of 0x2F, which reads back at 0x0F on real hw

Verify the AY writes by reading back the AY regs
Support TAB to switch AY chip & revert to USE_AYDATA1=1 (tag:CYB-TEST2-D)
2024-05-28 10:41:30 +00:00 · 2021-01-17 21:47:04 +00:00 · 2021-01-17 19:49:45 +00:00 · 2021-01-03 17:08:33 +00:00 · 2021-01-02 21:41:06 +00:00 · 2020-09-21 19:53:21 +01:00
11 changed files with 3623 additions and 80 deletions
--- a/Common/MB-Macros.a
+++ b/Common/MB-Macros.a
@ -1,6 +1,7 @@

 SPECTRUM128_STEREO = 1	; L = A+Bx0.5, R = C'+B'x0.5
 DUAL_MONO = 0			; L = A+B+C, R=A'+B'+C'
+USE_PHASOR = 1


 !macro MB_Init1 .RegSongNum {
@ -18,7 +19,7 @@ nMaskB:		!byte 0		; Voice-B mask (0=enable)
 nMaskC:		!byte 0		; Voice-C mask (0=enable)
 ;
 nAttA:		!byte 0		; Attenuation of Voice-A
-nAttB:		!byte 1		; Attenuation of Voice-B : B Volume / 2 (logarithmic, so: if (A) A--)
+nAttB:		!byte 1		; Attenuation of Voice-B : B Volume / 2 (logarithmic, so: if (B) B--)
 nAttC:		!byte 0		; Attenuation of Voice-C
 ;
 pAYRegValues:	!word AYRegValues	; For VU-meter
@ -43,7 +44,7 @@ SongNumOK:
 		; . Saving ZPBlock

 		lda		#1<<6
-MB0:	sta		CARD_BASE+SY6522_IER	; Disable Timer1 IRQ
+MB0:	sta		CARD_BASE+SY6522_IER+SY6522_A_PH_BASE	; Disable Timer1 IRQ

 FindMB:

@ -89,22 +90,38 @@ GotMBSlot:

 	;

+!if USE_PHASOR {		; Phasor 2MHz mode
+	lda		MBBaseH
+	asl
+	asl
+	asl
+	asl								; slot * 16
+	clc
+	adc		#PH_PHASOR
+	tax
+	lda		$c080,x
+}
+
+!if USE_PHASOR {
+	lda		#$1f		; Phasor has 2 extra chip-select bits (b4:3)
+}else{
 	lda		#$07
-	ldy		#SY6522_DDRB
+}
+	ldy		#SY6522_DDRB+SY6522_A_PH_BASE
 	sta		(MBBase),y
-	ldy		#SY6522_DDRB+$80
+	ldy		#SY6522_DDRB+SY6522_B_BASE
 	sta		(MBBase),y

 	lda		#$ff
-	ldy		#SY6522_DDRA
+	ldy		#SY6522_DDRA+SY6522_A_PH_BASE
 	sta		(MBBase),y
-	ldy		#SY6522_DDRA+$80
+	ldy		#SY6522_DDRA+SY6522_B_BASE
 	sta		(MBBase),y

-	lda		#AY_RESET
-	ldy		#SY6522_ORB
+	lda		#AY_RESET	; Phasor chip-select b4:3=%00 (so select both AY's)
+	ldy		#SY6522_ORB+SY6522_A_PH_BASE
 	sta		(MBBase),y
-	ldy		#SY6522_ORB+$80
+	ldy		#SY6522_ORB+SY6522_B_BASE
 	sta		(MBBase),y

 	ldx		nSongNum
@ -127,23 +144,23 @@ NotFini:
 	sta		nFrameNum+2

 	; Setup Timer1 IRQ to trigger at 50Hz
-	; Apple CLK = 1.022727 MHz, so set Timer1=0x4fe7
+	; Apple NTSC CLK = 1.022727 MHz, so set Timer1=0x4fe7

 	sei

 	lda		#$e7
-	ldy		#SY6522_TIMER1L_COUNTER
+	ldy		#SY6522_TIMER1L_COUNTER+SY6522_A_PH_BASE
 	sta		(MBBase),y
 	lda		#$4f
-	ldy		#SY6522_TIMER1H_COUNTER
+	ldy		#SY6522_TIMER1H_COUNTER+SY6522_A_PH_BASE
 	sta		(MBBase),y

 	lda		#1<<6
-	ldy		#SY6522_ACR
+	ldy		#SY6522_ACR+SY6522_A_PH_BASE
 	sta		(MBBase),y				; Free running timer

 	lda		#1<<7 | 1<<6
-	ldy		#SY6522_IER	
+	ldy		#SY6522_IER+SY6522_A_PH_BASE
 	sta		(MBBase),y				; Enable Timer1 IRQ

 	lda		#<Interrupt				; ADDR_L
@ -162,26 +179,31 @@ InitExit2:

 ;--------------------------------------

-!macro SF_UpdateAY {
+!if USE_PHASOR {
+PHASOR_CS_MASK = %10000	; Phasor: b4=1 (don't select), b3=0 (select)
+} else {
+PHASOR_CS_MASK = 0
+}

 ; Skyfox's routine to update AY regs:
+!macro SF_UpdateAY {

 SF_SelectReg:
 MBx1:	sta		CARD_BASE+SY6522_ORA,x
-		lda		#AY_LATCH
+		lda		#AY_LATCH | PHASOR_CS_MASK
 		bne		.l675e

 SF_WriteReg:
 MBx2:	sta		CARD_BASE+SY6522_ORA,x
-		lda		#AY_WRITE
+		lda		#AY_WRITE | PHASOR_CS_MASK
 		bne		.l675e

 SF_ChipReset:
-		lda		#AY_RESET
+		lda		#AY_RESET | PHASOR_CS_MASK

 .l675e:
 MBx3:	sta		CARD_BASE+SY6522_ORB,x
-		lda		#AY_INACTIVE
+		lda		#AY_INACTIVE | PHASOR_CS_MASK
 MBx4:	sta		CARD_BASE+SY6522_ORB,x
 		rts
 }
@ -238,6 +260,9 @@ AYPostProc:
 	;
 	; Attenuate AVOL

+;	lda		.ay_regs_base+AY_AVOL
+;	and		#AY_AMPLITUDE_MODE
+;	bne		+				; don't attenuate if amp.mode=envelope (Cybernoid doesn't use envelopes)
 	lda		.ay_regs_base+AY_AVOL
 	sec
 	sbc		nAttA
@ -245,10 +270,14 @@ AYPostProc:
 		lda		#0
 .ay_set_a_vol
 	sta		.ay0_regs+AY_AVOL
+

 	;
 	; Attenuate BVOL

+;	lda		.ay_regs_base+AY_BVOL
+;	and		#AY_AMPLITUDE_MODE
+;	bne		+				; don't attenuate if amp.mode=envelope (Cybernoid doesn't use envelopes)
 	lda		.ay_regs_base+AY_BVOL
 	sec
 	sbc		nAttB
@ -257,10 +286,14 @@ AYPostProc:
 .ay_set_b_vol
 	sta		.ay0_regs+AY_BVOL
 	sta		.ay1_regs+AY_BVOL
+

 	;
 	; Attenuate CVOL

+;	lda		.ay_regs_base+AY_CVOL
+;	and		#AY_AMPLITUDE_MODE
+;	bne		+				; don't attenuate if amp.mode=envelope (Cybernoid doesn't use envelopes)
 	lda		.ay_regs_base+AY_CVOL
 	sec
 	sbc		nAttC
@ -268,6 +301,7 @@ AYPostProc:
 		lda		#0
 .ay_set_c_vol
 	sta		.ay1_regs+AY_CVOL
+

 	;
 	; User disable A/B/C
@ -311,7 +345,7 @@ AYPostProc:

 	;

-	ldx		#0
+	ldx		#SY6522_A_PH_BASE		; Works for both MB & Phasor modes
 	ldy		#$0D
 .sf_loop0:	tya
 			jsr		SF_SelectReg
@ -322,7 +356,7 @@ AYPostProc:

 	;

-	ldx		#$80
+	ldx		#SY6522_B_BASE
 	ldy		#$0D
 .sf_loop1:	tya
 			jsr		SF_SelectReg
@ -373,24 +407,24 @@ AYPostProc:

 .ay_loop:
 		; Select AY reg
-MB1:	sty		CARD_BASE+SY6522_ORA
+MB1:	sty		CARD_BASE+SY6522_ORA+SY6522_A_PH_BASE
 MB1b:	sty		CARD_BASE+SY6522_ORA+$80
 		lda		#$07			; LATCH
-MB2:  	sta		CARD_BASE+SY6522_ORB
+MB2:  	sta		CARD_BASE+SY6522_ORB+SY6522_A_PH_BASE
 MB2b:  	sta		CARD_BASE+SY6522_ORB+$80
 		lda		#$04			; INACTIVE
-MB3:  	sta		CARD_BASE+SY6522_ORB
+MB3:  	sta		CARD_BASE+SY6522_ORB+SY6522_A_PH_BASE
 MB3b:  	sta		CARD_BASE+SY6522_ORB+$80

 		; Write AY reg
 		lda		(TmpL),y
-MB4:  	sta		CARD_BASE+SY6522_ORA
+MB4:  	sta		CARD_BASE+SY6522_ORA+SY6522_A_PH_BASE
 MB4b:  	sta		CARD_BASE+SY6522_ORA+$80
 		lda		#$06			; WRITE
-MB5:  	sta		CARD_BASE+SY6522_ORB
+MB5:  	sta		CARD_BASE+SY6522_ORB+SY6522_A_PH_BASE
 MB5b:  	sta		CARD_BASE+SY6522_ORB+$80
 		lda		#$04			; INACTIVE
-MB6:  	sta		CARD_BASE+SY6522_ORB
+MB6:  	sta		CARD_BASE+SY6522_ORB+SY6522_A_PH_BASE
 MB6b:  	sta		CARD_BASE+SY6522_ORB+$80

 		dey
@ -428,7 +462,7 @@ MB6b:  	sta		CARD_BASE+SY6522_ORB+$80

 	lda		#1<<6
 MB7:
-	sta		CARD_BASE+SY6522_IFR	; Clear Timer1 IRQ flag
+	sta		CARD_BASE+SY6522_IFR+SY6522_A_PH_BASE	; Clear Timer1 IRQ flag

 	pla
 	tay
--- a/Common/MockingboardDefs.a
+++ b/Common/MockingboardDefs.a
@ -2,6 +2,10 @@

 CARD_BASE = $C100

+SY6522_A_BASE = $00
+SY6522_A_PH_BASE = $10	; Phasor mode (this is common to both MB & Phasor modes)
+SY6522_B_BASE = $80
+
 SY6522_ORB = 0
 SY6522_ORA = 1
 SY6522_DDRB = 2
@ -29,6 +33,9 @@ AY_EFINE	= 11
 AY_ECOARSE	= 12
 AY_ESHAPE	= 13

+AY_NOISE_MASK = $1f		; valid bits of AY_NOISEPER
+AY_AMPLITUDE_MODE = $10	; b4 of AY_xVOL (0=fixed, 1=envelope)
+
 AY_ENA_A	= %110110	; Enable A (Noise & Tone)
 AY_ENA_B	= %101101	; Enable B (Noise & Tone)
 AY_ENA_C	= %011011	; Enable C (Noise & Tone)
@ -42,4 +49,9 @@ AY_RESET	= 0
 AY_INACTIVE	= 4
 AY_READ		= 5
 AY_WRITE	= 6
-AY_LATCH	= 7
+AY_LATCH	= 7
+
+; Phasor mode
+PH_MOCKINGBOARD = 8
+PH_PHASOR = $D
+PH_ECHOPLUS = $F
--- a/Cybernoid/Cybernoid.a
+++ b/Cybernoid/Cybernoid.a
@ -415,7 +415,7 @@ lf0f3:		; Cmd_F0

 ;--------------------------------------

-lf492 = lf40a + ($f492-$f40a)
+lf492 = $28b2

 lf0f9:		; Cmd_E2
 ; Pseudo random number generator
@ -459,7 +459,7 @@ lf0f9_SMC_h:
 lf111:		; Cmd_E3

 lf111_SMC:
-	lda		#$05
+	lda		#$2a
 	sta		RegA

 ;--------------------------------------
@ -545,7 +545,7 @@ lf116:		; Cmd_00
 	bne		lf156

 	; ld      hl,(0f212h)
-	+LDW_INDIRECT	RegHL, lf1f6				; HL = A-freq
+	+LDW_INDIRECT	RegHL, lf212

 	; ld      (0f20ah),hl
 	+LDW_INDIRECT	lf20a, RegHL
@ -734,7 +734,7 @@ lf1b1:
 	jsr		lf1c9

 	; ld      hl,0f1fch
-	+LDW	RegHL, lf1fc
+	+LDW	RegHL, lf1fc	; lf1fc = AYRegValues.NOISEPER

 	; ld      a,(hl)
 	+LD_REG_INDIRECT RegA, RegHL
@ -758,13 +758,13 @@ lf1b1:
 	+RET_C

 	; inc     hl
-	+INCW	RegHL
+	+INCW	RegHL			; lf1fd = AYRegValues.ENABLE

 	; ld      a,(hl)
 	+LD_REG_INDIRECT RegA, RegHL

 	; or      38h
-	ora		#$38
+	ora		#$38			; ENABLE |= 0x38 (disable noise CBA)
 	sta		RegA

 	; ld      (hl),a
@ -791,8 +791,15 @@ lf1c9:
 	; inc     (hl)
 	+INC_INDIRECT RegHL

+	lda		RegD		; $00nn?
+	bne		+
+		lda		#$f3	; 48K ROM $0000
+		sta		RegA
+		bne		++		; branch always
+
 	; ld      a,(de)
 	+LD_REG_INDIRECT	RegA, RegDE
++

 	; sub     (hl)
 	+SUB_INDIRECT RegHL
@ -813,8 +820,15 @@ lf1c9:
 	; inc     de
 	+INCW		RegDE

+	lda		RegD		; $00nn?
+	bne		+
+		lda		#$af	; 48K ROM $0001
+		sta		RegA
+		bne		++		; branch always
+
 	; ld      a,(de)
 	+LD_REG_INDIRECT	RegA, RegDE
++

 	; ld      c,a
 	+LD		RegC, RegA
@ -828,8 +842,15 @@ lf1c9:
 	; inc     (hl)
 	+INC_INDIRECT RegHL

+	lda		RegD		; $00nn?
+	bne		+
+		lda		#$11	; 48K ROM $0002
+		sta		RegA
+		bne		++		; branch always
+
 	; ld      a,(de)
 	+LD_REG_INDIRECT	RegA, RegDE
++

 	; sub     (hl)
 	+SUB_INDIRECT	RegHL
@ -902,11 +923,11 @@ SF_Detect:
 	ldx		#7

 .SlotNext:
-		ldy		#$00+SY6522_TIMER1L_COUNTER
+		ldy		#SY6522_TIMER1L_COUNTER+SY6522_A_PH_BASE
 		jsr		SF_GetTimerL
 		bne		.SlotLoop

-		ldy		#$80+SY6522_TIMER1L_COUNTER
+		ldy		#SY6522_TIMER1L_COUNTER+SY6522_B_BASE
 		jsr		SF_GetTimerL
 		beq		.SlotDone

@ -961,63 +982,67 @@ SongTbl:	!byte 01	;  0: (AY: Title/In-game)

 ; AY regs [0..$D]
 AYRegValues:
-lf1f6:		!word 0		; A period
+lf1f6:		!word $01a8	; A period
 lf1f8:		!word 0		; B period
 lf1fa:		!word 0		; C period
-lf1fc:		!byte 0		; Noise period
-lf1fd:		!byte 0		; Enable
+lf1fc:		!byte $2f	; Noise period
+lf1fd:		!byte $3f	; Enable
 lf1fe:		!byte 0		; A volume
 lf1ff:		!byte 0		; B volume
 lf200:		!byte 0		; C volume
-lf201:		!word 0		; Envelope period
-lf203:		!byte 0		; Envelope shape
+lf201:		!word $0064	; Envelope period (not used)
+lf203:		!byte $0a	; Envelope shape  (not used)

 ;--------------------------------------

 lf204:		!word 0		; Tone period
-lf206:		!word 0
-			!word 0
+lf206:		!word $014a
+			!word $000a

 ;--------------------------------------

 lf20a:		!word 0
+			!word $0004
 			!word 0
-			!word 0
-			!word 0
+			!word $0012

 lf212:		!word 0

 ;--------------------------------------

+!macro MUSIC_DATA_ADDR .addr {
+	!word lf40a + (.addr - $f40a)
+}
+
 ; Voice-A struct

 lf214:		!byte 0
+			!byte 2
 			!byte 0
 			!byte 0
-			!byte 0
-			!word 0
-			!word 0
+			+MUSIC_DATA_ADDR $f41b
+			+MUSIC_DATA_ADDR $f471
 			!byte 0
 			!byte 0
 			!byte 0
 			!byte 0
-			!word 0
-			!word 0
+			+MUSIC_DATA_ADDR $f418
+			+MUSIC_DATA_ADDR $f471
 lf224:		!byte 0
-			!byte 0
-			!word 0
-			!word 0
-			!word 0
-			!byte 0
+			!byte $0a
+			+MUSIC_DATA_ADDR $f65e
+			+MUSIC_DATA_ADDR $f575
+			+MUSIC_DATA_ADDR $f56f
+			!byte 7
 			!byte 0
 			!byte $08	; 001000 - Disable A (Noise)
 			!byte $36	; 110110 - Enable A (Noise & Tone)
 			!word lf1fe	; &VolA
+			!byte $12
 			!byte 0
-			!byte 0
-			!byte 0
-			!byte 0
-			!byte 0
+			!byte $10
+			!byte $29
+			!byte 1

 ;--------------------------------------

@ -1086,7 +1111,8 @@ lf26a:		!byte 0
 ;--------------------------------------

 ;lf27d:
-			!fill 17,0		; ?
+			!byte $2a
+			!fill 16,0		; ?

 ;--------------------------------------

@ -1101,7 +1127,9 @@ lf28e:
 ; . Envelopes are not used, so no E-Periods to convert

 !macro ZX2MB .period {
-	!word .period*10227/17734
+;	!word .period*10227/17734	; Mockingboard 1MHz ((NTSC:14.3181818e6 / 14) / 100)
+	!word .period*20358/17734	; Phasor 2MHz ((PAL:14.25045e6 / 7) / 100)
+;	!word .period
 }

 	+ZX2MB $0000
--- a/Cybernoid/build.bat
+++ b/Cybernoid/build.bat
@ -1,4 +1,2 @@
-D:\Apple][\acme085\acme.exe cybernoid.a
-D:\Apple][\InsertBIN2AWS\debug\InsertBIN2AWS.exe cybernoid 6000 cybernoid.aws
-java -jar "D:\Apple][\Apple Commander\ac\AppleCommander-1.3.3.9-ac.jar" -d cybernoid ..\ReleaseDSK\Cybernoid.dsk
-cat cybernoid | java -jar "D:\Apple][\Apple Commander\ac\AppleCommander-1.3.3.9-ac.jar" -p Cybernoid bin 24576 ..\ReleaseDSK\Cybernoid.dsk
+acme.exe cybernoid.a
+copy cybernoid.labels %APPLEWIN_DBG%\A2_USER1.sym
--- a/CybernoidTest/Cybernoid.a
+++ b/CybernoidTest/Cybernoid.a
--- a/CybernoidTest/build.bat
+++ b/CybernoidTest/build.bat
@ -0,0 +1,2 @@
+acme.exe cybernoid.a
+copy cybernoid.labels %APPLEWIN_DBG%\A2_USER1.sym
--- a/CybernoidTest/debug.txt
+++ b/CybernoidTest/debug.txt
@ -0,0 +1,3 @@
+// PWD: <root>\AY-Z80\Cybernoid
+// run "debug.txt"
+bload "cybernoid",4000
--- a/CybernoidTest2/CybernoidTest2.a
+++ b/CybernoidTest2/CybernoidTest2.a
@ -0,0 +1,963 @@
+;ACME 0.96.4
+
+!cpu 6502	; Compatible with all Apple2's
+!to "CybernoidTest2", plain
+!sl "CybernoidTest2.labels"
+*=$4000
+
+USE_AYDATA1 = 1
+
+;------------------------------------------------------------------------------
+
+!source "..\Common\AppleDefs.a"
+!source "..\Common\MockingboardDefs.a"
+!source "..\Common\MB-Macros.a"
+
+;------------------------------------------------------------------------------
+
+zpTmp	= $f9
+pTonesTbl	= $fa
+TmpL    = $fc	; alias with pAYData
+pAYData = $fc
+MBBase	= $fe
+MBBaseL	= MBBase
+MBBaseH	= MBBase+1
+
+!zone code
+
+;--------------------------------------
+
+Entrypoint:
+	lda		zpTmp
+	sta		saveF9
+	lda		pTonesTbl+0
+	sta		saveFA
+	lda		pTonesTbl+1
+	sta		saveFB
+	lda		pAYData+0
+	sta		saveFC
+	lda		pAYData+1
+	sta		saveFD
+	lda		MBBaseL
+	sta		saveFE
+	lda		MBBaseH
+	sta		saveFF
+
+	jsr		SF_GetMBSlot
+	bne		GotMBSlot
+
+		; MB not found!
+		brk
+
+GotMBSlot:
+	stx		nMBBaseHi
+
+	stx		MB1x+2
+	stx		MB2x+2
+	stx		MB3x+2
+	stx		MB4x+2
+	stx		MB5x+2
+	stx		MB6x+2
+
+	stx		MB7x+2
+	stx		MB8x+2
+	stx		MB9x+2
+	stx		MBAx+2
+	stx		MBBx+2
+	stx		MBCx+2
+
+	stx		MB1y+2
+	stx		MB2y+2
+	stx		MB3y+2
+	stx		MB4y+2
+	stx		MB5y+2
+	stx		MB6y+2
+	stx		MB7y+2
+	stx		MB8y+2
+	stx		MB9y+2
+
+	stx		MB7+2
+
+	;
+
+	lda		#$07
+	ldy		#SY6522_DDRB
+	sta		(MBBase),y
+	ldy		#SY6522_DDRB+$80
+	sta		(MBBase),y
+
+	lda		#$ff
+	ldy		#SY6522_DDRA
+	sta		(MBBase),y
+	ldy		#SY6522_DDRA+$80
+	sta		(MBBase),y
+
+	lda		#AY_RESET
+	ldy		#SY6522_ORB
+	sta		(MBBase),y
+	ldy		#SY6522_ORB+$80
+	sta		(MBBase),y
+
+	;
+
+	; Setup Timer1 IRQ to trigger at 50Hz
+	; Apple CLK = 1.022727 MHz, so set Timer1=0x4fe7
+
+	sei
+
+	lda		#$e7
+	ldy		#SY6522_TIMER1L_COUNTER
+	sta		(MBBase),y
+	lda		#$4f
+	ldy		#SY6522_TIMER1H_COUNTER
+	sta		(MBBase),y
+
+	lda		#1<<6
+	ldy		#SY6522_ACR
+	sta		(MBBase),y				; Free running timer
+
+	lda		#1<<7 | 1<<6
+	ldy		#SY6522_IER	
+	sta		(MBBase),y				; Enable Timer1 IRQ
+
+	lda		#<Interrupt				; ADDR_L
+	sta		IRQL
+	lda		#>Interrupt				; ADDR_H 
+	sta		IRQH
+
+	jsr		InitAYData
+	jsr		InitTones
+
+	lda		#0
+	sta		AYDataDoneFlag
+	sta		nFrameNum+0
+	sta		nFrameNum+1
+	sta		nFrameNum+2
+
+	cli
+
+loop	lda		AYDataDoneFlag
+		bne		done
+		lda		$c000
+		bpl		loop
+		bit		$c010
+		cmp		#27+$80		; ESC to quit
+		beq		done
+		cmp		#9+$80		; TAB to toggle AY-chip
+		bne		+
+			jsr		toggle_ay
+			bcs		loop
+		jsr		TonesInc
+		bcs		loop
+		jsr		TonesDec
+		bcs		loop
+
+pause	; step via one-shot mode
+		sei
+		lda		#0
+		ldy		#SY6522_ACR
+		sta		(MBBase),y
+		lda		nFrameNum+2
+		cli
+-			cmp		nFrameNum+2
+			beq		-
+
+		ldy		nFrameNum+1			; Second
+		ldx		nFrameNum+2			; Frame#
+		jsr		$f940				; PRNTYX
+-			lda		$c000
+			bpl		-
+		bit		$c010
+		tax		; keycode
+
+		lda		#$e7
+		ldy		#SY6522_TIMER1L_COUNTER
+		sta		(MBBase),y
+		lda		#$4f
+		ldy		#SY6522_TIMER1H_COUNTER
+		sta		(MBBase),y
+
+		cpx		#' '+$80
+		beq		pause
+
+		; restart
+		lda		#1<<6
+		ldy		#SY6522_ACR
+		sta		(MBBase),y				; Free running timer
+		jmp		loop
+
+done
+	lda		#1<<6
+	ldy		#SY6522_IER	
+	sta		(MBBase),y				; Disable Timer1 IRQ
+
+	lda		#AY_RESET
+	ldy		#SY6522_ORB
+	sta		(MBBase),y
+	ldy		#SY6522_ORB+$80
+	sta		(MBBase),y
+
+	lda		saveF9
+	sta		zpTmp
+	lda		saveFA
+	sta		pTonesTbl+0
+	lda		saveFB
+	sta		pTonesTbl+1
+	lda		saveFC
+	sta		pAYData+0
+	lda		saveFD
+	sta		pAYData+1
+	lda		saveFE
+	sta		MBBaseL
+	lda		saveFF
+	sta		MBBaseH
+
+	rts
+
+;--------------------------------------
+
+Interrupt
+; Pre:
+;	6502 has pushed P
+;	Apple ROM has stored A to $45 (not Apple //e ROM!)
+;
+
+	txa 
+	pha
+	tya
+	pha
+
+	jsr		lefe5
+
+	;
+
+;;	lda		AYDataDoneFlag
+;;	bne		.done
+
+	lda		pAYData+0
+	sta		MBsmc1+1
+	sta		MBsmc2+1
+	lda		pAYData+1
+	sta		MBsmc1+2
+	sta		MBsmc2+2
+
+	ldx		#AY_INACTIVE
+	ldy		#13								; write AY regs from $D to $0 (like Cybernoid)
+-
+MB1x		sty		CARD_BASE+SY6522_ORA
+			lda		#AY_LATCH
+MB2x		sta		CARD_BASE+SY6522_ORB
+MB3x		stx		CARD_BASE+SY6522_ORB	; Set INACTIVE
+MBsmc1		lda		AYData1,y
+MB4x		sta		CARD_BASE+SY6522_ORA
+			lda		#AY_WRITE
+MB5x		sta		CARD_BASE+SY6522_ORB
+MB6x		stx		CARD_BASE+SY6522_ORB	; Set INACTIVE
+			dey
+			;
+MB7x		sty		CARD_BASE+SY6522_ORA
+			lda		#AY_LATCH
+MB8x		sta		CARD_BASE+SY6522_ORB
+MB9x		stx		CARD_BASE+SY6522_ORB	; Set INACTIVE
+MBsmc2		lda		AYData1,y
+			cpy		#AY_NOISEPER
+			bne		+
+				and		#AY_NOISE_MASK
+
+MBAx		sta		CARD_BASE+SY6522_ORA
+			lda		#AY_WRITE
+MBBx		sta		CARD_BASE+SY6522_ORB
+MBCx		stx		CARD_BASE+SY6522_ORB	; Set INACTIVE
+			dey
+			bpl		-
+
+	; Verify AY writes
+	lda		pAYData+0
+	sta		MBsmc3+1
+	lda		pAYData+1
+	sta		MBsmc3+2
+
+	ldx		#AY_INACTIVE
+	ldy		#13								; read AY regs from $D to $0
+
+-		lda		#$ff						; Port-A direction = output
+MB1y	sta		CARD_BASE+SY6522_DDRA
+MB2y	sty		CARD_BASE+SY6522_ORA		; AY reg to read
+
+		lda		#AY_LATCH
+MB3y	sta		CARD_BASE+SY6522_ORB
+MB4y	stx		CARD_BASE+SY6522_ORB
+
+		lda		#$00						; Port-A direction = input
+MB5y	sta		CARD_BASE+SY6522_DDRA
+
+		lda		#AY_READ
+MB6y	sta		CARD_BASE+SY6522_ORB
+MB7y	stx		CARD_BASE+SY6522_ORB
+
+MBsmc3	lda		AYData1,y
+		cpy		#AY_NOISEPER
+		bne		+
+			and		#AY_NOISE_MASK
+		sta		zpTmp
+MB8y	lda		CARD_BASE+SY6522_ORA		; and read it!
+		cmp		zpTmp
+		beq		+
+			; ERR Reg:Val(read):Val(expect)
+			sty		$404		; reg#
+			sta		$406		; value read
+			lda		zpTmp
+			sta		$408		; value expected
+			lda		#'E'+$80
+			sta		$400
+			lda		#'R'+$80
+			sta		$401
+			lda		#'R'+$80
+			sta		$402
+			lda		#' '+$80
+			sta		$403
+			lda		#':'+$80
+			sta		$405
+			lda		#':'+$80
+			sta		$407
+
+		dey
+		bpl		-
+
+	; And finally Port-A = output
+	lda		#$ff
+MB9y	sta		CARD_BASE+SY6522_DDRA
+
+	; Setup for next AY-reg set
+	clc
+	lda		pAYData+0
+	adc		#14
+	sta		pAYData+0
+	lda		pAYData+1
+	adc		#0
+	sta		pAYData+1
+
+	; $ff,$ff = end of data
+	ldy		#0
+	lda		(pAYData),y
+	iny
+	and		(pAYData),y
+	cmp		#$ff
+	bne		+
+;;		sta		AYDataDoneFlag
+		jsr		InitAYData
+
+
+	;
+
+.done
+	lda		#1<<6
+MB7	sta		CARD_BASE+SY6522_IFR	; Clear Timer1 IRQ flag
+
+	pla
+	tay
+	pla
+	tax
+
+	lda		$45
+	rti
+
+
+;--------------------------------------
+
+lefe5:
+	inc		nFrameNum+2
+	lda		nFrameNum+2
+	cmp		#50
+	bne		.fnum_ok
+		lda		#0
+		sta		nFrameNum+2
+		inc		nFrameNum+1
+		lda		nFrameNum+1
+		cmp		#60
+		bne		.fnum_ok
+			lda		#0
+			sta		nFrameNum+1
+			inc		nFrameNum+0
+.fnum_ok:
+
+	rts
+
+;------------------------------------------------------------------------------
+
+; Skyfox MB detection routine:
+
+SF_GetMBSlot:
+; Pre:
+; Post:
+;  Z = 0 (NE) : MB detected
+;  X = HI(MB base address)
+;  (MBBase) = MB slot address
+;
+
+	jsr		SF_Detect
+
+.Loop:	stx		TmpL
+		jsr		SF_Detect
+		cpx		TmpL
+		bne		.Loop
+
+	cpx		#$C8
+	rts
+
+;--------------------------------------
+
+SF_Detect:
+	lda		#0
+	sta		MBBaseL
+	lda		#$c1
+	sta		MBBaseH
+	ldx		#7
+
+.SlotNext:
+		ldy		#$00+SY6522_TIMER1L_COUNTER
+		jsr		SF_GetTimerL
+		bne		.SlotLoop
+
+		ldy		#$80+SY6522_TIMER1L_COUNTER
+		jsr		SF_GetTimerL
+		beq		.SlotDone
+
+.SlotLoop:
+		inc		MBBaseH
+		dex
+		bne		.SlotNext
+
+.SlotDone:
+	ldx		MBBaseH
+	rts
+
+;--------------------------------------
+
+SF_GetTimerL:
+	lda		(MBBase),y
+	cmp		MBBaseL
+	sbc		(MBBase),y
+	cmp		#$08
+	rts
+
+;--------------------------------------
+
+InitAYData
+!if USE_AYDATA1 {
+	lda		#<AYData1
+	sta		pAYData+0
+	lda		#>AYData1
+	sta		pAYData+1
+} else {
+	lda		#<AYData2
+	sta		pAYData+0
+	lda		#>AYData2
+	sta		pAYData+1
+}
+	rts
+
+;--------------------------------------
+
+toggle_ay
+	sei
+
+	lda		#AY_RESET
+	ldy		#SY6522_ORB
+	sta		(MBBase),y
+	ldy		#SY6522_ORB+$80
+	sta		(MBBase),y
+
+	lda		MB1x+1	; ORA
+	eor		#$80
+	tax
+	lda		MB2x+1	; ORB
+	eor		#$80
+
+	stx		MB1x+1
+	sta		MB2x+1
+	sta		MB3x+1
+
+	stx		MB4x+1
+	sta		MB5x+1
+	sta		MB6x+1
+
+	stx		MB7x+1
+	sta		MB8x+1
+	sta		MB9x+1
+
+	stx		MBAx+1
+	sta		MBBx+1
+	sta		MBCx+1
+
+	;
+
+	lda		MB1y+1
+	eor		#$80
+	sta		MB1y+1
+	sta		MB5y+1
+	sta		MB9y+1
+
+	lda		MB2y+1
+	eor		#$80
+	sta		MB2y+1
+	sta		MB8y+1
+
+	lda		MB3y+1
+	eor		#$80
+	sta		MB3y+1
+	sta		MB4y+1
+	sta		MB6y+1
+	sta		MB7y+1
+
+	cli
+
+	sec
+	rts
+
+;------------------------------------------------------------------------------
+
+!zone data
+
+nMBBaseHi		!byte 0
+AYDataDoneFlag	!byte 0
+nFrameNum		!byte 0,0,0	; Minute:Second:FrameNum (@ 50Hz)
+
+saveF9			!byte 0
+saveFA			!byte 0
+saveFB			!byte 0
+saveFC			!byte 0
+saveFD			!byte 0
+saveFE			!byte 0
+saveFF			!byte 0
+
+;--------------------------------------
+
+SetTones
+	sei
+
+	; Even lines
+
+	jsr	InitAYData
+
+	lda	#<TonesTbl
+	sta	pTonesTbl+0
+	lda	#>TonesTbl
+	sta	pTonesTbl+1
+
+	ldy	#0		; TonesTbl index
+
+--		lda (pTonesTbl),y
+		sta smc1+1
+		iny
+		lda (pTonesTbl),y
+		sta smc2+1
+		iny
+		lda (pTonesTbl),y
+		tax		; count
+		iny
+		tya
+		pha		; TonesTbl index
+
+-			ldy #0
+smc1		lda	#$00
+			sta (pAYData),y
+			iny
+smc2		lda	#$00
+			sta (pAYData),y
+			clc
+			lda pAYData+0
+			adc #14*2		; alternate AY-reg sets
+			sta pAYData+0
+			lda pAYData+1
+			adc #0
+			sta pAYData+1
+			dex
+			bne -
+
+		pla
+		tay
+		lda (pTonesTbl),y
+		iny
+		and (pTonesTbl),y
+		dey
+		cmp	#$ff
+		bne --
+
+	; Odd lines
+
+	jsr	InitAYData
+	clc
+	lda pAYData+0
+	adc #14			; 1st odd set
+	sta pAYData+0
+	lda pAYData+1
+	adc #0
+	sta pAYData+1
+
+	lda	#<TonesTblOdd
+	sta	pTonesTbl+0
+	lda	#>TonesTblOdd
+	sta	pTonesTbl+1
+
+	ldy	#0		; TonesTblOdd index
+
+--		lda (pTonesTbl),y
+		sta smc3+1
+		iny
+		lda (pTonesTbl),y
+		sta smc4+1
+		iny
+		lda (pTonesTbl),y
+		tax		; count
+		iny
+		tya
+		pha		; TonesTbl index
+
+-			ldy #0
+smc3		lda	#$00
+			sta (pAYData),y
+			iny
+smc4		lda	#$00
+			sta (pAYData),y
+			clc
+			lda pAYData+0
+			adc #14*2		; alternate AY-reg sets
+			sta pAYData+0
+			lda pAYData+1
+			adc #0
+			sta pAYData+1
+			dex
+			bne -
+
+		pla
+		tay
+		lda (pTonesTbl),y
+		iny
+		and (pTonesTbl),y
+		dey
+		cmp	#$ff
+		bne --
+
+
+	jsr	InitAYData
+	cli
+	rts
+
+;--------------------------------------
+
+PrintTones
+	lda TonesTbl+0*3+1
+	sta $400
+	lda TonesTbl+0*3+0
+	sta $401
+
+	lda #$A0
+	sta $402
+	sta $403
+
+!if USE_AYDATA1 {
+	lda TonesTbl+1*3+1
+	sta $404
+	lda TonesTbl+1*3+0
+	sta $405
+
+	lda #$A0
+	sta $406
+	sta $407
+
+	lda TonesTbl+3*3+1
+	sta $408
+	lda TonesTbl+3*3+0
+	sta $409
+
+	lda #$A0
+	sta $40A
+	sta $40B
+
+	lda TonesTbl+4*3+1
+	sta $40C
+	lda TonesTbl+4*3+0
+	sta $40D
+
+	lda #$A0
+	sta $40E
+	sta $40F
+
+	lda TonesTbl+5*3+1
+	sta $410
+	lda TonesTbl+5*3+0
+	sta $411
+
+	lda #$A0
+	sta $412
+	sta $413
+} else {
+	lda TonesTbl+2*3+1
+	sta $404
+	lda TonesTbl+2*3+0
+	sta $405
+
+	lda #$A0
+	sta $406
+	sta $407
+}
+
+	sec
+	rts
+
+;--------------------------------------
+
+TonesInc
+!if USE_AYDATA1 {
+	ldy #0
+	cmp #'1'+$80
+	beq .inc
+	iny
+	cmp #'2'+$80
+	beq .inc
+	iny			; skip 'evens' end marker
+	iny
+	cmp #'3'+$80
+	beq .inc
+	iny
+	cmp #'4'+$80
+	beq .inc
+	iny
+	cmp #'5'+$80
+	beq .inc
+} else {
+	ldy #0
+	cmp #'1'+$80
+	beq .inc
+	iny			; skip 'evens' end marker
+	iny
+	cmp #'2'+$80
+	beq .inc
+}
+	clc
+	rts
+
+.inc
+	sty pTonesTbl
+	tya
+	asl		; =lsl
+	clc
+	adc pTonesTbl
+	tay				; y=y*3
+
+	lda	#<TonesTbl
+	sta	pTonesTbl+0
+	lda	#>TonesTbl
+	sta	pTonesTbl+1
+
+	clc
+	lda (pTonesTbl),y
+	adc #1
+	sta (pTonesTbl),y
+	iny
+	lda (pTonesTbl),y
+	adc #0
+	sta (pTonesTbl),y
+
+	jsr SetTones
+	jmp PrintTones
+
+;--------------------------------------
+
+TonesDec
+!if USE_AYDATA1 {
+	ldy #0
+	cmp #'Q'+$80
+	beq .dec
+	iny
+	cmp #'W'+$80
+	beq .dec
+	iny			; skip 'evens' end marker
+	iny
+	cmp #'E'+$80
+	beq .dec
+	iny
+	cmp #'R'+$80
+	beq .dec
+	iny
+	cmp #'T'+$80
+	beq .dec
+} else {
+	ldy #0
+	cmp #'Q'+$80
+	beq .dec
+	iny			; skip 'evens' end marker
+	iny
+	cmp #'W'+$80
+	beq .dec
+}
+	clc
+	rts
+
+.dec
+	sty pTonesTbl
+	tya
+	asl		; =lsl
+	clc
+	adc pTonesTbl
+	tay				; y=y*3
+
+	lda	#<TonesTbl
+	sta	pTonesTbl+0
+	lda	#>TonesTbl
+	sta	pTonesTbl+1
+
+	sec
+	lda (pTonesTbl),y
+	sbc #1
+	sta (pTonesTbl),y
+	iny
+	lda (pTonesTbl),y
+	sbc #0
+	sta (pTonesTbl),y
+
+	jsr SetTones
+	jmp PrintTones
+
+;--------------------------------------
+
+InitTones
+!if USE_AYDATA1 {
+	ldy #0*3
+	lda	#$01
+	sta TonesTbl+0*3+1
+	lda #$e9
+	sta TonesTbl+0*3+0
+	;
+	lda	#$02
+	sta TonesTbl+1*3+1
+	lda #$68
+	sta TonesTbl+1*3+0
+	;
+	lda	#$00
+	sta TonesTbl+3*3+1
+	lda #$cd
+	sta TonesTbl+3*3+0
+	;
+	lda	#$00
+	sta TonesTbl+4*3+1
+	lda #$d9
+	sta TonesTbl+4*3+0
+	;
+	lda	#$00
+	sta TonesTbl+5*3+1
+	lda #$f4
+	sta TonesTbl+5*3+0
+} else {
+	ldy #0*3
+	lda	#$01
+	sta TonesTbl+0*3+1
+	lda #$e9
+	sta TonesTbl+0*3+0
+	;
+	lda	#$00
+	sta TonesTbl+2*3+1
+	lda #$cd
+	sta TonesTbl+2*3+0
+}
+	rts
+
+;--------------------------------------
+
+TonesTbl	; word freq, byte count
+!if USE_AYDATA1 {
+	; even sets
+	!word $01e9
+	!byte 18
+	!word $0268
+	!byte 6
+	!word $ffff		; end
+	!byte $ff
+
+TonesTblOdd
+	; odd sets
+	!word $00cd
+	!byte 6
+	!word $00d9
+	!byte 12
+	!word $00f4
+	!byte 6
+	!word $ffff		; end
+	!byte $ff
+} else {
+	; even sets
+	!word $01e9
+	!byte 1
+	!word $ffff		; end
+	!byte $ff
+
+TonesTblOdd
+	; odd sets
+	!word $00cd
+	!byte 1
+	!word $ffff		; end
+	!byte $ff
+}
+
+;--------------------------------------
+
+AYData1
+;         A-period        C-period    Ena     BVol    Envelope
+;                 B-period       Noise    AVol    CVol
+	; Cybernoid AY-regs generated by AppleII Cybernoid (so has Mockingboard tone freqs)
+	; . loop around 1st noisy section
+	!byte $E9,$01,$00,$00,$00,$00,$2F,$3E,$0D,$00,$00,$64,$00,$0A
+	!byte $CD,$00,$00,$00,$00,$00,$2F,$3E,$0C,$00,$00,$64,$00,$0A
+	!byte $E9,$01,$00,$00,$00,$00,$2F,$3E,$0B,$00,$00,$64,$00,$0A
+	!byte $CD,$00,$00,$00,$00,$00,$2F,$3E,$0A,$00,$00,$64,$00,$0A
+	!byte $E9,$01,$00,$00,$00,$00,$2F,$3E,$09,$00,$00,$64,$00,$0A
+	!byte $CD,$00,$00,$00,$00,$00,$2F,$3E,$00,$00,$00,$64,$00,$0A
+	!byte $E9,$01,$00,$00,$00,$00,$2F,$3E,$0D,$00,$00,$64,$00,$0A
+	!byte $CD,$00,$00,$00,$00,$00,$2F,$3E,$0C,$00,$00,$64,$00,$0A
+	!byte $E9,$01,$00,$00,$00,$00,$2F,$3E,$0B,$00,$00,$64,$00,$0A
+	!byte $CD,$00,$00,$00,$00,$00,$2F,$3E,$0A,$00,$00,$64,$00,$0A
+	!byte $E9,$01,$00,$00,$00,$00,$2F,$3E,$09,$00,$00,$64,$00,$0A
+	!byte $CD,$00,$00,$00,$00,$00,$2F,$3E,$00,$00,$00,$64,$00,$0A
+	!byte $E9,$01,$00,$00,$00,$00,$2F,$3E,$0D,$00,$00,$64,$00,$0A
+	!byte $D9,$00,$00,$00,$00,$00,$2F,$3E,$0C,$00,$00,$64,$00,$0A
+	!byte $E9,$01,$00,$00,$00,$00,$2F,$3E,$0B,$00,$00,$64,$00,$0A
+	!byte $D9,$00,$00,$00,$00,$00,$2F,$3E,$0A,$00,$00,$64,$00,$0A
+	!byte $E9,$01,$00,$00,$00,$00,$2F,$3E,$09,$00,$00,$64,$00,$0A
+	!byte $D9,$00,$00,$00,$00,$00,$2F,$3E,$00,$00,$00,$64,$00,$0A
+	!byte $E9,$01,$00,$00,$00,$00,$2F,$3E,$0D,$00,$00,$64,$00,$0A
+	!byte $D9,$00,$00,$00,$00,$00,$2F,$3E,$0C,$00,$00,$64,$00,$0A
+	!byte $E9,$01,$00,$00,$00,$00,$2F,$3E,$0B,$00,$00,$64,$00,$0A
+	!byte $D9,$00,$00,$00,$00,$00,$2F,$3E,$0A,$00,$00,$64,$00,$0A
+	!byte $E9,$01,$00,$00,$00,$00,$2F,$3E,$09,$00,$00,$64,$00,$0A
+	!byte $D9,$00,$00,$00,$00,$00,$2F,$3E,$00,$00,$00,$64,$00,$0A
+	!byte $E9,$01,$00,$00,$00,$00,$2F,$3E,$0D,$00,$00,$64,$00,$0A
+	!byte $D9,$00,$00,$00,$00,$00,$2F,$3E,$0C,$00,$00,$64,$00,$0A
+	!byte $E9,$01,$00,$00,$00,$00,$2F,$3E,$0B,$00,$00,$64,$00,$0A
+	!byte $D9,$00,$00,$00,$00,$00,$2F,$3E,$0A,$00,$00,$64,$00,$0A
+	!byte $E9,$01,$00,$00,$00,$00,$2F,$3E,$09,$00,$00,$64,$00,$0A
+	!byte $D9,$00,$00,$00,$00,$00,$2F,$3E,$00,$00,$00,$64,$00,$0A
+	!byte $E9,$01,$00,$00,$00,$00,$2F,$3E,$0D,$00,$00,$64,$00,$0A
+	!byte $D9,$00,$00,$00,$00,$00,$2F,$3E,$0C,$00,$00,$64,$00,$0A
+	!byte $E9,$01,$00,$00,$00,$00,$2F,$3E,$0B,$00,$00,$64,$00,$0A
+	!byte $D9,$00,$00,$00,$00,$00,$2F,$3E,$0A,$00,$00,$64,$00,$0A
+	!byte $E9,$01,$00,$00,$00,$00,$2F,$3E,$09,$00,$00,$64,$00,$0A
+	!byte $D9,$00,$00,$00,$00,$00,$2F,$3E,$00,$00,$00,$64,$00,$0A
+	!byte $68,$02,$00,$00,$00,$00,$2F,$3E,$0D,$00,$00,$64,$00,$0A
+	!byte $F4,$00,$00,$00,$00,$00,$2F,$3E,$0C,$00,$00,$64,$00,$0A
+	!byte $68,$02,$00,$00,$00,$00,$2F,$3E,$0B,$00,$00,$64,$00,$0A
+	!byte $F4,$00,$00,$00,$00,$00,$2F,$3E,$0A,$00,$00,$64,$00,$0A
+	!byte $68,$02,$00,$00,$00,$00,$2F,$3E,$09,$00,$00,$64,$00,$0A
+	!byte $F4,$00,$00,$00,$00,$00,$2F,$3E,$00,$00,$00,$64,$00,$0A
+	!byte $68,$02,$00,$00,$00,$00,$2F,$3E,$0D,$00,$00,$64,$00,$0A
+	!byte $F4,$00,$00,$00,$00,$00,$2F,$3E,$0C,$00,$00,$64,$00,$0A
+	!byte $68,$02,$00,$00,$00,$00,$2F,$3E,$0B,$00,$00,$64,$00,$0A
+	!byte $F4,$00,$00,$00,$00,$00,$2F,$3E,$0A,$00,$00,$64,$00,$0A
+	!byte $68,$02,$00,$00,$00,$00,$2F,$3E,$09,$00,$00,$64,$00,$0A
+	!byte $F4,$00,$00,$00,$00,$00,$2F,$3E,$00,$00,$00,$64,$00,$0A
+	!byte $ff,$ff
+
+AYData2		; just freq modulation (no amplitude modulation)
+	!byte $E9,$01,$00,$00,$00,$00,$2F,$3E,$0D,$00,$00,$64,$00,$0A
+	!byte $CD,$00,$00,$00,$00,$00,$2F,$3E,$0D,$00,$00,$64,$00,$0A
+	!byte $ff,$ff
--- a/CybernoidTest2/build.bat
+++ b/CybernoidTest2/build.bat
@ -0,0 +1,2 @@
+acme.exe CybernoidTest2.a
+copy CybernoidTest2.labels %APPLEWIN_DBG%\A2_USER1.sym
--- a/CybernoidTest2/debug.txt
+++ b/CybernoidTest2/debug.txt
@ -0,0 +1,3 @@
+// PWD: <root>\AY-Z80\CybernoidTest2
+// run "debug.txt"
+bload "CybernoidTest2",4000
--- a/README.md
+++ b/README.md
@ -8,25 +8,22 @@ So as a little R&D proj, I thought I'd convert Dave Rogers' Spectrum
 128 Cybernoid routine (written in 1988).

 Here's a summary of how I did it:
-. I got cybernoid.ay from
-http://www.worldofspectrum.org/projectay/gdmusic.htm
-. Split it into bin's with AYSplitR
-. Disassembled with Inkland's dz80w (http://www.inkland.org.uk/dz80/index.htm)
-. I wrote 6502 macros to replace the z80 opcodes
-. For cybernoid, I hand converted the z80 code to 6502 (using the
-macros)
-. I added a few extension to AppleWin's debugger to help debug the 6502
-code (ACME symbol loading & ZP pointer support).
+- I got cybernoid.ay from [here](http://www.worldofspectrum.org/projectay/gdmusic.htm)
+- Split it into bin's with AYSplitR
+- Disassembled with Inkland's dz80w [here](http://www.inkland.org.uk/dz80/index.htm)
+- I wrote 6502 macros to replace the z80 opcodes
+- For cybernoid, I hand converted the z80 code to 6502 (using the macros)
+- I added a few extension to AppleWin's debugger to help debug the 6502 code (ACME symbol loading & ZP pointer support).

 I use Skyfox's MB detection routine.

 The Z80 regs are emulated with zero-page memory locations $F0..$F8
 The playback routine is very inefficient, as it:
-. saves the ZP memory
-. restores the Z80 regs
-. runs the IRQ handler
-. saves the Z80 regs
-. restores the ZP memory
+- saves the ZP memory
+- restores the Z80 regs
+- runs the IRQ handler
+- saves the Z80 regs
+- restores the ZP memory

 This allows playback to work simultaneously with Applesoft & ProDOS. If
 DOS3.3 doesn't disable IRQs around disk I/O, then it won't work on a
Author	SHA1	Message	Date
tomcw	0c58998e02	Mask AY_NOISEPER (reg-6) with 0x1F, as Cybernoid reg data has a value of 0x2F, which reads back at 0x0F on real hw	2021-01-17 21:47:04 +00:00
tomcw	6622164bac	Verify the AY writes by reading back the AY regs	2021-01-17 19:49:45 +00:00
tomcw	d84745262f	Support TAB to switch AY chip & revert to USE_AYDATA1=1 (tag:CYB-TEST2-D)	2021-01-03 17:08:33 +00:00
tomcw	25a3efc4ff	Added assembly-time USE_AYDATA1 define: . USE_AYDATA1=0: use the Cybernoid noisy section of 48 AY-reg sets - keys (to change A-period): 1...5; Q...T . USE_AYDATA1=1: use just 2 AY-reg sets - keys (to change A-period): 1,2; Q,W	2021-01-02 21:41:06 +00:00
tomcw	0378adc3b1	Fixed typo in comment	2020-09-21 19:53:21 +01:00
tomcw	ee44c17b8a	Cybernoid Test 1 . Cybernoid AY-regs exported from FUSE (so Spectrum freqs) . Cybernoid AY-regs generated by fixed 6502 code (so MB freqs) . convert noise period from ZX to MB(1MHz) . moved org from $6000 to $4000	2020-09-20 12:06:07 +01:00
tomcw	94b58b49d5	Cybernoid Test 2 . Write AY regs from $D to $0 (like real Cybernoid) . Write AY regs in pairs (eg. $1,$0) as optimally as possible	2020-09-20 12:03:05 +01:00
tomcw	57b5ea265a	Fixes for Cybernoid1: . Ultimately switched from MB(1MHz clock) to Phasor(2MHz clock) for less noisy playback. . Fixed a bug in Cmd_00 where HL was loaded with the wrong value. . Fixed bugs where (DE) was referencing $00nn Spectrum ROM values. . Fixed initial state to mirror the Cybernoid game (not the AY player binary).	2020-09-20 11:50:15 +01:00
tomcw	7218584326	Use keys (1-5) & (Q-T) to inc/dec the 5 tone periods.	2020-09-19 23:51:20 +01:00
tomcw	d22d64473c	Trim all the unused AY-reg sets!	2020-09-19 21:51:32 +01:00
tomcw	3d223a3134	Cybernoid Test 2: . Continuous loop around noisy section . SPACE to single-step the playback; RETURN to resume playback; ESC to quit	2020-09-19 21:30:22 +01:00
tomcw	9ef98da9bf	CybernoidTest: added comments for where noisy problem occurs Cybernoid: Updated build.bat Updated MB-Macros.a to not attenuate if amp.mode=envelope . Nb. neither cybernoid1/2 use envelopes	2020-09-06 11:27:21 +01:00
tomcw	8e100ae88a	Reduce AY access times some more.	2020-09-06 10:53:50 +01:00
tomcw	581c02e7dd	Tried a version reducing AY WRITE time	2020-09-06 10:36:00 +01:00
tomcw	09d885c8e4	Added CybernoidTest . Simple array of 14xAY regs written each interrupt . First few seconds of tune showing the problem . SPACE to single-step the playback; RETURN to resume playback	2020-09-06 09:32:14 +01:00
tomcw	95255e1e4f	Update README.md: Fix links	2017-04-21 22:23:53 +01:00
tomcw	bf40c52a25	Update README.md: Fix links	2017-04-21 22:23:28 +01:00
tomcw	4f462151d3	Update README.md: Formatting	2017-04-21 22:21:14 +01:00