IC function:	4 Mbit (512k×8 / 256k×16) Mask ROM
Related components:	2 Mbit Mask ROM, 8 Mbit Mask ROM

Component documentation

IC number	Manufacturer	Documentation
	NEC	Not available
MX23C4100	Macronix	Datasheet (PDF)

Component versions

IC number	Package
All	40-pin DIP

Programmed components

CBM part number	CBM part description	Chip description
363968-01	IC ROM Assy Kickstart ver 2.04
390979-01	ROM 256k X 16 Kickstart 2.04	Kickstart V2.04 37.175
391304-01	ROM Kickstart V2.0 40pin DIP	Kickstart V2.05 37.300
391304-02		Kickstart V2.05 37.350

Positions

Amiga	Position	Package	Software
A500 Plus	U6	DIP	Kickstart 2.04
A600	U6	DIP	Kickstart 2.05

Pinout

Socket pin	ROM pin	Type	Name	Signal name
				A500 Plus	A600
1			(A18)	A19
2	1	Input	A17	A18
3..10	2..9	Input	A7..A0	A8..A1
11	10	Input	_CS	GND	_ROMEN
12	11	Power	VSS	GND
13	12	Input	_OE	_ROMEN	_OE
14	13	Output	D0	D0
15	14	Output	D8	D8
16	15	Output	D1	D1
17	16	Output	D9	D9
18	17	Output	D2	D2
19	18	Output	D10	D10
20	19	Output	D3	D3
21	20	Output	D11	D11
22	21	Power	VCC	VCC
23	22	Output	D4	D4
24	23	Output	D12	D12
25	24	Output	D5	D5
26	25	Output	D13	D13
27	26	Output	D6	D6
28	27	Output	D14	D14
29	28	Output	D7	D7
30	29	Output	D15	D15
31	30	Power	VSS	GND
32	31	Input	_BYTE	VCC
33..41	32..40	Input	A16..A8	A17..A9
42			(A19)	A20