8087 used in Commodore and Amiga equipment

IC number: 8087
IC function: Floating-point co-processor
Related components: 80287, 80387SX, 80387DX, 80486DX, 80486DX2 (successors), 8088 (main processor)

Component documentation
IC number	Manufacturer	Documentation
i8087 (8087)	Intel	Not available

Component versions
IC number	Package	CBM part number	CBM part description
C8087, D8078	40-pin Ceramic DIP	380201-01	IC, Co-processor 8087 5 MHz

Positions
Device	Position	Package
A1060 main board	U65 (not installed)	DIP
A2088	U2 (not installed)	DIP
PC10 CPU board	U62 (not installed)	DIP
PC10 combined board	U49 (not installed)	DIP
PC10-III	U103 (not installed)	DIP
PC-1	U2 (not installed)	DIP

Pinout
Pin	Type	Name
1	Power	GND
2..8	I/O	AD14(A14)..AD8(A8)
9..16	I/O	AD7..AD0
17..18	N/C	NC
19	Input	CLK
20	Power	GND
21	Input	RESET
22	Input	READY
23	Output	BUSY
24..25	Input	QS1..QS0
26..28	I/O	S0_..S2_
29..30	N/C	NC
31	I/O	RQ_/GT0_
32	Output	INT
33	I/O	RQ_/GT1_
34	I/O	BHE/S7
35..38	I/O	A19/S6..A16/S3
39	I/O	AD15
40	Power	VCC

Copyright © 2003-2004 Ronald van Dijk - All rights reserved
Last update: 20 September 2004