DMC11 Synchronous Serial Controller - Revision history

Jnc: /* See also */ Names per DEC docs

2023-05-13T20:46:29Z

‎See also: Names per DEC docs

Jnc: New cat scheme

2023-02-18T02:16:12Z

New cat scheme

Jnc: New cat

2022-08-15T19:26:59Z

New cat

Vaxorcist: Details for DDCMP V3.1 restriction added

2022-06-08T09:31:54Z

Details for DDCMP V3.1 restriction added

Vaxorcist: fixed typo

2022-06-08T07:46:10Z

fixed typo

Vaxorcist: DMC11 created

2022-06-08T07:42:09Z

DMC11 created

New page

The '''DMC11 Synchronous Serial Controller''' is a single-line [[synchronous serial line]] [[peripheral|interface]] for the [[UNIBUS]].

It consists of two modules:
* the DMC11-AD processor module (M8200)
* a line module, one of:
** DMC11-MA (M8202) High Speed Line Unit with Integral Modem (1M), for local coaxial cables up to 6,000 feet
** DMC11-MA (M8202) High Speed Line Unit with Integral Modem (56K), for local coaxial cables up to 18,000 feet
** DMC11-DA/-FA (M8201) Low Speed Line Units (-DA: EIA/CCITT V24 up to 19,2K / -FA: CCITT V35 up to 56K), for use with Bell [[modem]]s 208, and 209

The DMC11 uses [[Direct Memory Access|DMA]] to transfer data. It can operate in either [[half-duplex]] or [[full-duplex]], at [[baud rate]]s up to 1M bits/second (depending on the line module used and cable length) providing 16-bit [[CRC]], and supports point-to-point operation only.

The DMC11 supports the [[DDCMP]] (version 3.1 only) and [[Bit Stuff]] line [[protocol|protocols]]; a [[ROM]]-controlled [[microprocessor]] is used to implement DDCMP the protocol.

All modules are [[DEC card form factor|hex]] cards; the processor module is an [[SPC]] hex card, the line unit modules are notched hex cards.

{{semi-stub}}

==See also==

* [[DMR11 synchronous serial line interface]]
* [[DMP11 synchronous serial line interface]]

==External links==

* [http://www.bitsavers.org/pdf/dec/unibus/EK-DMCMP-TM-002_DMC11_IPL_Microprocessor_Technical_Manual_Aug79.pdf|EK-DMCMP-TM-002 DMC11 IPL microprocessor technical manual]
* [http://www.vaxhaven.com/images/a/af/EK-DMCMP-MM-001.pdf|EK-DMCMP-MM-001 DMC11 IPL microprocessor maintenance manual]
* [http://www.vaxhaven.com/images/4/4e/EK-DMCLU-MM-001.pdf|EK-DMCLU-MM-001 DMC11 IPL synchronous line unit maintenance manual]
* [http://www.vaxhaven.com/images/6/68/EK-DMCMP-OP-001.pdf|EK-DMCMP-OP-001 DMC11 IPL microprocessor user's manual]
* [http://www.vaxhaven.com/images/8/82/EK-DMCLU-OP-001.pdf|EK-DMCLU-OP-001 DMC11 IPL synchronous line unit user's manual]
* MP-00076 DMC11 DMC11 Engineering Drawings Rev. C
* MP-00076 DMC11 DMC11 Engineering Drawings Rev. D

[[Category: UNIBUS Serial Interfaces]]

@@ Line 20: / Line 20: @@
 ==See also==
-* [[DMR11 Synchronous Serial Line Interface]]
+* [[DMR11 Synchronous Controller]]
-* [[DMP11 Synchronous Serial Line Interface]]
+* [[DMP11 Synchronous Controller]]
 ==External links==

← Older revision		Revision as of 02:16, 18 February 2023
Line 33:		Line 33:
	* MP-00076 DMC11 DMC11 Engineering Drawings Rev. D		* MP-00076 DMC11 DMC11 Engineering Drawings Rev. D

−	[[Category: UNIBUS ~~Serial Interfaces]]~~	+	[[Category: UNIBUS Synchronous Serial Interfaces]]
−	~~[[Category: DEC~~ Synchronous Serial Interfaces]]

← Older revision		Revision as of 19:26, 15 August 2022
Line 34:		Line 34:

	[[Category: UNIBUS Serial Interfaces]]		[[Category: UNIBUS Serial Interfaces]]
		+	[[Category: DEC Synchronous Serial Interfaces]]

@@ Line 7: / Line 7: @@
 ** DMC11-MA (M8202) High Speed Line Unit with Integral Modem (56K), for local coaxial cables up to 18,000 feet
 ** DMC11-DA/-FA (M8201) Low Speed Line Units (-DA: EIA/CCITT V24 up to 19.2K / -FA: CCITT V35 up to 56K), for use with Bell [[modem]]s 208, and 209
 The DMC11 uses [[Direct Memory Access|DMA]] to transfer data. It can operate in either [[half-duplex]] or [[full-duplex]], at [[baud rate]]s up to 1M bits/second (depending on the line module used and cable length) providing 16-bit [[CRC]], and supports point-to-point operation only.
@@ Line 12: / Line 14: @@
 The DMC11 supports the [[DDCMP]] (version 3.1 only) and [[Bit Stuff]] line [[protocol|protocols]]; a [[ROM]]-controlled [[microprocessor]] is used to implement DDCMP the protocol.
-All modules are [[DEC card form factor|hex]] cards; the processor module is an [[SPC]] hex card, the line unit modules are notched hex cards.
+Other Synchronous Serial Controllers (e.g. [[DMR11]], [[DMP11]]) have to be switched to "DMC Mode" (DDCMP V3.1) to be able to communicate with DMC11s.
 {{semi-stub}}
@@ Line 18: / Line 20: @@
 ==See also==
-* [[DMR11 synchronous serial line interface]]
+* [[DMR11 Synchronous Serial Line Interface]]
-* [[DMP11 synchronous serial line interface]]
+* [[DMP11 Synchronous Serial Line Interface]]
 ==External links==