DN11 Automatic Calling Unit Interface - Revision history

Jnc: correct fix

2023-10-13T22:03:25Z

correct fix

Vaxorcist: Fixed typo

2023-10-13T08:43:43Z

Fixed typo

Jnc: /* Implementation */ Later units used the M7821

2023-07-19T14:38:37Z

‎Implementation: Later units used the M7821

Jnc: /* See also */ +Asynchronous+Synchronous Serial Interfaces

2023-07-19T12:07:07Z

‎See also: +Asynchronous+Synchronous Serial Interfaces

Jnc: Jnc moved page DN11 to DN11 Automatic Calling Unit Interface: Formal DEC name

2023-07-18T21:39:22Z

Jnc moved page DN11 to DN11 Automatic Calling Unit Interface: Formal DEC name

Jnc: Pretty stubby, but covers the basics

2023-07-18T21:38:58Z

Pretty stubby, but covers the basics

New page

The '''DN11 Automatic Calling Unit Interface''' was a [[UNIBUS]] [[peripheral|device]] which connected to, and allowed control of, a Bell 801 Automatic Calling Unit. The ACU could dial a telephone call on an attached telephone line; once the call had connected, a [[modem]] attached the the line, in parallel with the ACU, could establish a data link between the local modem and a remote modem. (A [[serial interface]] is required to connect the UNIBUS to the modem; that can be either [[asynchronous serial line|asynchronous]] or [[synchronous serial line|synchronous]].)

==Registers==

Each DN11 has a single control and status [[register]]. All the DN11s in a single [[backplane]] share an [[interrupt]].

==Implementation==

A DNll requires a custom [[system unit]] backplane and support [[printed circuit board|boards]] (the ensemble is denominated a ''''DNl1-AA'''), which can hold up to 4 independent DN11 plug-in units ('''DN11-DA'''). The DNll-AA contains:

* 70-08513 Wired System Unit ([[DEC part number]])
* G8000 Filter Network (+15V Supply)
* M002 Logic/Source Module
* M117 4-Input NAND Gate [[FLIP CHIP]]
* [[M782 Interrupt Control|M7820 Interrupt Control]]
* [[M105 Address Selector]]

Each DN11-DA contains:

* M7226 Control Module
* BCOIR Cable Card Assembly

{{semi-stub}}

==External links==

* [http://www.bitsavers.org/www.computer.museum.uq.edu.au/pdf/DEC-11-HDNAA-B-D%20DN11%20Automatic%20Calling%20Unit%20Interface%20Manual.pdf DN11 automatic calling unit interface manual] (DEC-11-HDNAA-B-D)

[[Category: UNIBUS Serial Interfaces]]

← Older revision		Revision as of 22:03, 13 October 2023
Line 1:		Line 1:
−	The '''DN11 Automatic Calling Unit Interface''' was a [[UNIBUS]] [[peripheral\|device]] which connected to, and allowed control of, a Bell 801 Automatic Calling Unit. The ACU could dial a telephone call on an attached telephone line; once the call had connected, a [[modem]] attached the line, in parallel with the ACU, could establish a data link between the local modem and a remote modem. (A [[serial interface]] is required to connect the UNIBUS to the modem; that can be either [[asynchronous serial line\|asynchronous]] or [[synchronous serial line\|synchronous]].)	+	The '''DN11 Automatic Calling Unit Interface''' was a [[UNIBUS]] [[peripheral\|device]] which connected to, and allowed control of, a Bell 801 Automatic Calling Unit. The ACU could dial a telephone call on an attached telephone line; once the call had connected, a [[modem]] attached to the line, in parallel with the ACU, could establish a data link between the local modem and a remote modem. (A [[serial interface]] is required to connect the UNIBUS to the modem; that can be either [[asynchronous serial line\|asynchronous]] or [[synchronous serial line\|synchronous]].)

	==Registers==		==Registers==

← Older revision		Revision as of 08:43, 13 October 2023
Line 1:		Line 1:
−	The '''DN11 Automatic Calling Unit Interface''' was a [[UNIBUS]] [[peripheral\|device]] which connected to, and allowed control of, a Bell 801 Automatic Calling Unit. The ACU could dial a telephone call on an attached telephone line; once the call had connected, a [[modem]] attached ~~the~~ the line, in parallel with the ACU, could establish a data link between the local modem and a remote modem. (A [[serial interface]] is required to connect the UNIBUS to the modem; that can be either [[asynchronous serial line\|asynchronous]] or [[synchronous serial line\|synchronous]].)	+	The '''DN11 Automatic Calling Unit Interface''' was a [[UNIBUS]] [[peripheral\|device]] which connected to, and allowed control of, a Bell 801 Automatic Calling Unit. The ACU could dial a telephone call on an attached telephone line; once the call had connected, a [[modem]] attached the line, in parallel with the ACU, could establish a data link between the local modem and a remote modem. (A [[serial interface]] is required to connect the UNIBUS to the modem; that can be either [[asynchronous serial line\|asynchronous]] or [[synchronous serial line\|synchronous]].)

	==Registers==		==Registers==

← Older revision		Revision as of 12:07, 19 July 2023
Line 22:		Line 22:

	{{semi-stub}}		{{semi-stub}}
		+
		+	==See also==
		+
		+	* [[:Category:UNIBUS Asynchronous Serial Interfaces\|UNIBUS Asynchronous Serial Interfaces]]
		+	* [[:Category:UNIBUS Synchronous Serial Interfaces\|UNIBUS Synchronous Serial Interfaces]]
		+
		+	==Further reading==
		+
		+	* ''DN11 User Manual'' (EK-ODN11-OP - not online)
		+	* ''DN11 Automatic Calling Unit Interface Manual'' (EK-ODN11-TM-002 - not online)
		+	* ''DN11 Maintenance Prints'' (MP-DN11-00 - not online)

	==External links==		==External links==

@@ Line 7: / Line 7: @@
 ==Implementation==
-A DNll requires a custom [[system unit]] backplane and support [[printed circuit board|boards]] (the ensemble is denominated a ''''DNl1-AA'''), which can hold up to 4 independent DN11 plug-in units ('''DN11-DA'''). The DNll-AA contains:
+A DNll requires a custom quad [[system unit]] backplane and support [[printed circuit board|boards]] (the ensemble is denominated a ''''DNl1-AA'''), which can hold up to 4 independent DN11 plug-in units ('''DN11-DA'''). The DNll-AA contains:
 * 70-08513 Wired System Unit ([[DEC part number]])
@@ Line 16: / Line 16: @@
 * [[M105 Address Selector]]
-Each DN11-DA contains:
+Later versions included instead the later revision M7821 Interrupt Control. Each DN11-DA contains:
-* M7226 Control Module
+* M7226 Control Module ([[DEC card form factor|dual]]-width)
-* BCOIR Cable Card Assembly
+* BCO1R Cable Card Assembly
 {{semi-stub}}

← Older revision	Revision as of 21:39, 18 July 2023
(No difference)