MB02-MB03-eLeMeNt-ZXi-IO-ports

	A	B	C	D	E	F	G	H	I	J
1	high byte	low byte	rd	wr	MB03+ Ultimate	eLeMeNt ZX	MB02+	NEXT	ZX Spectrum	Other

2
3	#x1	FF		*	SAA1099	SAA1099
4	#x0	FF		*	SAA1099	SAA1099
5	#xx	FF		*	Timex graphics mode	Timex graphics mode		Timex graphics mode
6	#xx	FE		*	ULA	ULA		ULA
7	#FF	FD			3xAY	TurboSound FM		3xAY	AY-3-8910
8	#DF	FD						memory bank extension
9	#BF	FD			3xAY	TurboSound FM		3xAY	AY-3-8910
10	#9x	FD	*		read only - reserved	read only - reserved
11	#9F	FD			read only - last #FF value	read only - last #FF value
12	#9E	FD			read only - last #FE value	read only - last #FE value
13	#7F	FD			memory 128/+2 paging	memory 128/+2 paging		memory ZXS128 paging	memory ZXS128 paging
14	#1F	FD			memory +2A/+3 paging	memory +2A/+3 paging		memory +2A/+3 paging	memory +2A/+3 paging
15
16	#xx	FB						DAC A,D
17	#xx	F9						DAC C
18	#xx	F3						DAC B
19	#xx	F1						DAC A
20	#xx	EB			divMMC - data	divMMC - data		divMMC - data
21	#xx	E7			divMMC - select device	divMMC - select device		divMMC - select device
22	#xx	E3			divIDE/divMMC - control	divIDE/divMMC - control		divIDE/divMMC - control
23
24	#FF	DF			Kempston Mouse Y-axis	Kempston Mouse Y-axis		Kempston Mouse Y-axis
25	#FB	DF			Kempston Mouse X-axis	Kempston Mouse X-axis		Kempston Mouse X-axis
26	#FA	DF			Kempston Mouse Buttons	Kempston Mouse Buttons		Kempston Mouse Buttons
27
28	#xx	DF			MBIDE-dron		MBIDE-dron	DAC A,D
29	#xx	DB			MBIDE-dron\hood		MBIDE-dron\hood
30	#xx	D7			MBIDE-dron		MBIDE-dron
31	#xx	D3			MBIDE-dron\hood		MBIDE-dron\hood
32	#xx	CF			MBIDE-dron		MBIDE-dron
33	#xx	CB			MBIDE-dron\hood		MBIDE-dron\hood
34	#xx	C7			MBIDE-dron		MBIDE-dron
35	#xx	C3			MBIDE-dron\hood		MBIDE-dron\hood
36	#xx	BF			divIDE-pvl\hood		divIDE-pvl\hood	Multiface +3 disable		divIDE
37	#xx	BB			divIDE-pvl		divIDE-pvl			divIDE
38	#xx	BB			General Sound - status	General Sound - status (Au+ FPGA)
39	#xx	B7			divIDE-pvl\hood		divIDE-pvl\hood			divIDE
40	#xx	B3			divIDE-pvl		divIDE-pvl	DAC B,C		divIDE
41	#xx	B3			General Sound - data	General Sound - data (Au+ FPGA)
42	#xx	AF			divIDE-pvl\hood		divIDE-pvl\hood			divIDE
43	#xx	AB			divIDE-pvl		divIDE-pvl			divIDE
44	#xx	A7			divIDE-pvl\hood		divIDE-pvl\hood			divIDE
45	#xx	A3			divIDE-pvl		divIDE-pvl			divIDE
46
47
48	#xx	9F						Multiface 1 and 128 enable
49	#xx	7F			reserved	reserved	8255
50	#xx	7B			reserved	reserved	8255#2
51	#xx	77			Z-Controller SD	Z-Controller SD	!memory			Z-Controller
52	#xx	73			memory config reg	memory config reg	!Floppy select reg
53	#xx	6F			reserved	reserved	FDC
54	#xx	6B					!DMA	zxnDMA		Datagear
55	#xx	67			memory high byte of Page in Area1	memory high byte of Page in Area1	!HDD
56	#xx	63			reserved	reserved	!RTC72421
57	#xx	5F			DAC-Czech C, Soundrive RightD	DAC-Czech C, Soundrive RightD	8255	DAC D
58	#xx	5B					8255#2	Sprite pattern
59	#xx	57			Z-Controller SD	Z-Controller SD	!memory	Sprite attributes		Z-Controller
60	#xx	53			memory config reg	memory config reg	!Floppy select reg
61	#xx	4F			DAC-Soundrive RightC, Covox Right	DAC-Soundrive RightC, Covox Right	FDC	DAC C
62	#xx	4B			LMN DMA - reserved	LMN DMA - reserved	!DMA
63	#xx	47			memory low byte of Page in Area1	memory low byte of Page in Area1	!HDD
64	#xx	43			reserved	reserved	!RTC72421
65	#xx	3F			DAC-Czech B	DAC-Czech B	8255	Multiface +3 enable/DAC A
66
67	#FF	3B			ULA+ data	ULA+ data		ULA+ data		ZXi
68	#BF	3B			ULA+ reg	ULA+ reg		ULA+ reg		ZXi
69	#7F	3B			mirror ports of 3xAY/TSFM	mirror ports of 3xAY/TSFM				ZXi
70	#7E	3B			mirror ports of 3xAY/TSFM	mirror ports of 3xAY/TSFM				ZXi
71	#7x	3B			Config #70-#7F	Config #70-#7F				ZXi
72	#6F	3B			SAA1099 mirror ports	SAA1099 mirror ports				ZXi
73	#6E	3B			SAA1099 mirror ports	SAA1099 mirror ports				ZXi
74	#6D	3B			SID: read/write selected SID Control Register	SID: read/write selected SID Control Register				ZXi
75	#6C	3B			SID: select SID Control Register	SID: select SID Control Register				ZXi
76	#30	3B						Sprite slot, flags		ZXi
77	#25	3B						NextREG Data		ZXi
78	#24	3B						NextREG Register Select		ZXi
79	#16	3B						UART Frame
80	#15	3B			UART control/speed	UART control/speed		UART control		ZXi
81	#14	3B			UART rx/WiFi rx	UART rx/WiFi rx		UART rx		ZXi
82	#13	3B			UART tx/WiFi tx	UART tx/WiFi tx		UART tx		ZXi
83	#12	3B						Layer 2		ZXi
84	#11	3B						i2c SDA		ZXi
85	#10	3B						i2c SCL		ZXi
86	#xx	3B					8255#2			ZXi
87
88	#xx	37					!memory	Kempston joy 2 / Joy Control
89	#xx	33			reserved	reserved	Floppy DD/HD select
90	#xx	2B			LIFO I/O Stack	LIFO I/O Stack	!DMA
91	#xx	2F			reserved	reserved	FDC
92	#xx	27			memory high byte of Page in Area0	memory high byte of Page in Area0	!HDD
93	#xx	23			reserved	reserved	!RTC72421
94	#xx	1F			DAC-Czech A, Soundrive LeftB/Kempston	DAC-Czech A, Soundrive LeftB/Kempston	8255/Kempston	Kempston/Multiface 1 and 128 disable/DAC A
95	#xx	1B			reserved	reserved	8255#2
96	#xx	17			memory MB02+ mode	memory MB02+ mode	memory
97	#xx	13			reserved	reserved	Floppy select reg
98	#xx	0F			DAC-Soundrive LeftA, Covox Left	DAC-Soundrive LeftA, Covox Left	FDC	DAC B
99	#xx	0B			DMA	DMA	DMA	DMA
100	#xx	07			memory low byte of Page in Area0	memory low byte of Page in Area0	HDD