IBM ISDN Interface Coprocessor (AT-Bus)

IBM ISDN Interface Coprocessor.
The ISDN Interface Coprocessor has:

•  An advanced high-performance 80C186 microprocessor.
•  1MB of dual-ported, parity-checked memory.
•  32KB of read-only-memory
•  An ISAC-S communications module (trademark of SIEMENS AG)
•  Multiple adapter installation capability.

ISDN Attachment Cable (Standard)

P1 Conn	Standard	Germany	Swiss	Lead #	P1 Signal Name
1	1	1	A3	Not Connected
2	2	2	B3	Not Connected
3	3	6	A1	1T	Transmit +
4	4	3	B2	2T	Receive +
5	5	4	A2	2	Receive -
6	6	5	B1	1	Transmit -
7	7	7	-	Not Connected
8	8	8	-	Not Connected

Adapter Card DIP-Switch setting

•  Use the same interrupt for all IBM ISDN Interface Coprocessor adapters  installed in the same unit.
•  In the presence of an 8-Bit Adapter (such as a Token Ring adapter) switch  5 on the IBM ISDN adapter(s) must be set to OFF (8-Bit data bus only).

DIP switch settings for I/O and memory

S1	S2	S3	S4	I/O address	Memory address
ON	ON	ON	ON	02A0h-02A7h	0C0000h-0C1FFFh
ON	ON	ON	Off	06A0h-06A7h	0C2000h-0C3FFFh
ON	ON	Off	ON	0AA0h-0AA7h	0C4000h-0C5FFFh
ON	ON	Off	Off	0EA0h-0EA7h	0C6000h-0C7FFFh
ON	Off	ON	ON	12A0h-12A7h	0C8000h-0C9FFFh
ON	Off	ON	Off	16A0h-16A7h	0CA000h-0CBFFFh
ON	Off	Off	ON	1AA0h-1AA7h	0CC000h-0CDFFFh
ON	Off	Off	Off	1EA0h-1EA7h	0CE000h-0CFFFFh
Off	ON	ON	ON	22A0h-22A7h	0D0000h-0D1FFFh
Off	ON	ON	Off	26A0h-26A7h	0D2000h-0D3FFFh
Off	ON	Off	ON	2AA0h-2AA7h	0D4000h-0D5FFFh
Off	ON	Off	Off	2EA0h-2EA7h	0D6000h-0D7FFFh
Off	Off	ON	ON	32A0h-32A7h	0D8000h-0D9FFFh
Off	Off	ON	Off	36A0h-36A7h	0DA000h-0DBFFFh
Off	Off	Off	ON	3AA0h-3AA7h	0DC000h-0DDFFFh
Off	Off	Off	Off	3EA0h-3EA7h	0DE000h-0DFFFFh

DIP switch settings for interrupts / data bus size

S5	S6	S7	S8	Interrupt
--	ON	ON	ON	3
--	ON	ON	Off	4
--	ON	Off	ON	7
--	ON	Off	Off	2 or 9
--	Off	ON	ON	10
--	Off	ON	Off	11
--	Off	Off	ON	12 (do not use)
--	Off	Off	Off	15
ON				16-Bit data bus
Off				8-Bit data bus

Please see the LEGAL  -  Trademark notice.
Feel free - send a   for any BUG on this page found - Thank you.