IC number:	5720
IC name:	MIO (Mouse & Input/Output)
IC function:	Mouse and I/O chip.

Component documentation

IC number	Manufacturer	Documentation
5720	MOS Technology / CSG	Not available

Component versions

IC number	Package	CBM part number	CBM part description
5720	68-Pin PLCC	318087-01	MOS 5720, Mouse-I/O control

Positions

Device	Position	Package
PC-I	U14	PLCC
PC40-III	U601	PLCC

Pinout

Pin	Type	Name
1	Power	VDD
2	Input	/BDACK0
3..6	Input	BA3..BA0
7	Input	SCLK
8	Input	/RESET
9	Input	RS0
10	Input	/WAIT
11	Input	RS1
12	Output	IOCHRDY
13	Input	RS2
14..17	I/O	BD0..BD3
18..19	Power	GND
20..23	I/O	BD4..BD7
24	Input	/BDACK
25	Output	/IDIR
26	Output	/NOVID
27	Input	/BL
28	Input	/MONO
29	Input	/BM
30	Input	/BR
31	Input	HQ-I
32	Input	HP-I
33	Input	VQ-I
34	Input	VP-I
35	Power	VDD
36	Input	M16
37..39	Output	IRQ2..IRQ4
40	Output	IRQ6
41	Input	IRQ6-IN
42	Output	DRQ2
43	Input	DRQ2-IN
44..45	Output	DRV-SEL2..DRV-SEL1
46	Ouput	FDC-RESET
47	Output	/CS-RTC
48	Output	/CS-HDC
49	Output	/CS-FDCXTR
50	Output	/CS-LDOR
51	Output	/CS-FDC
52	Power	GND
53	Input	TEST
54	Output	/CS-COM
55	Output	/CS-LPT
56	Output	/IOW-DLY
57	Output	/IOR-DLY
58	Input	/COM-OUT
59	Input	COM-INT
60	Input	/BIOWC
61	Input	BAEN
62	Input	/BIORC
63..68	Input	BA9..BA4

Registers

Address	Description
0x230 (read/write)	Mode register
0x23E (write)	Mouse control register
0x23E (read)	Mouse status register
0x23C (read)	Horizontal/vertial counter register
0x23D (read/write)	Dummy register