IMP11-A ARPANET interface - Revision history

Jnc: /* External links */ +manual

2022-08-30T02:19:37Z

‎External links: +manual

Jnc: more specific cat; clarify functionality

2021-11-08T15:10:46Z

more specific cat; clarify functionality

Larsbrinkhoff: Meow.

2021-11-08T10:13:46Z

Meow.

Jnc: uses DMA

2021-10-28T13:56:36Z

uses DMA

Jnc: proper cat

2019-01-20T01:15:42Z

proper cat

Jnc: /* Registers */ Tweak for fmt

2018-11-30T17:19:16Z

‎Registers: Tweak for fmt

Jnc: Typo, mentino function of additional logic

2018-11-30T17:17:33Z

Typo, mentino function of additional logic

Jnc: Add registers

2018-11-30T17:15:02Z

Add registers

Jnc: An OK start, more soon

2018-11-30T01:42:57Z

An OK start, more soon

New page

The '''IMP11-A ARPANET interface''' is a [[UNIBUS]] [[network interface]] produced by [[Digital Equipment Corporation|DEC]]'s Computer Special System division to connect allow a machine to connect to an [[ARPANET]] [[Interface Message Processor|IMP]].

It consists of a [[BA11-E Mounting Box]] holding a pair of [[DR11-B parallel interface]]s (one for [[packet]] input, and one for output), and a custom [[backplane]] holding a number of M-series [[FLIP CHIP]]s.

[[Category: UNIBUS Peripherals]]
[[Category: Network Interfaces]]

@@ Line 64: / Line 64: @@
 | colspan=16 | Data15 <---> Data00
 {{16bit-bitout}}
 [[Category: 1822 Interfaces‎]]
 [[Category: UNIBUS Network Interfaces]]

@@ Line 1: / Line 1: @@
-The '''IMP11-A ARPANET interface''' is a [[UNIBUS]] [[network interface]] produced by [[Digital Equipment Corporation|DEC]]'s Computer Special System division to allow a machine to connect to an [[ARPANET]] [[Interface Message Processor|IMP]].
+The '''IMP11-A ARPANET interface''' was a [[network interface]] produced by [[Digital Equipment Corporation|DEC]]'s Computer Special System division for the a [[UNIBUS]], which provided an [[1822 interface]]; the latter could connect to anything that provided a BBN-1822 bit-serial interface, most commonly including [[IMP interface]]s to [[ARPANET]] [[Interface Message Processor|IMP]]s, but also [[Packet Radio Network]] interfaces.
 It consists of a [[BA11-E Mounting Box]] holding a pair of [[DR11-B parallel interface]]s (the [[Direct Memory Access|DMA]] type of DR11 - one for [[packet]] input, and one for output), and a custom [[backplane]] holding a number of M-series [[FLIP CHIP]]s to interface to the IMP, including producing the bit serial input and output. Level converters allow use as either a Local Host or Distant Host interface.
@@ Line 65: / Line 65: @@
 {{16bit-bitout}}
 [[Category: UNIBUS Network Interfaces]]

← Older revision		Revision as of 10:13, 8 November 2021
Line 66:		Line 66:

	[[Category: UNIBUS Network Interfaces]]		[[Category: UNIBUS Network Interfaces]]
		+	[[Category: ARPANET]]

@@ Line 1: / Line 1: @@
 The '''IMP11-A ARPANET interface''' is a [[UNIBUS]] [[network interface]] produced by [[Digital Equipment Corporation|DEC]]'s Computer Special System division to allow a machine to connect to an [[ARPANET]] [[Interface Message Processor|IMP]].
-It consists of a [[BA11-E Mounting Box]] holding a pair of [[DR11-B parallel interface]]s (one for [[packet]] input, and one for output), and a custom [[backplane]] holding a number of M-series [[FLIP CHIP]]s to interface to the IMP, including producing the bit serial input and output. Level converters allow use as either a Local Host or Distant Host interface.
+It consists of a [[BA11-E Mounting Box]] holding a pair of [[DR11-B parallel interface]]s (the [[Direct Memory Access|DMA]] type of DR11 - one for [[packet]] input, and one for output), and a custom [[backplane]] holding a number of M-series [[FLIP CHIP]]s to interface to the IMP, including producing the bit serial input and output. Level converters allow use as either a Local Host or Distant Host interface.
 ==Registers==

← Older revision		Revision as of 01:15, 20 January 2019
Line 65:		Line 65:
	{{16bit-bitout}}		{{16bit-bitout}}

−	[[Category: UNIBUS ~~Peripherals]]~~	+	[[Category: UNIBUS Network Interfaces]]
−	~~[[Category:~~ Network Interfaces]]

@@ Line 37: / Line 37: @@
 ===772414: Transmit Command/Status Register (TXCSR)===
 {{16bit-header}}
-| ERROR || NEX || ATTN || MAINT || colspan=3 | Unused || CYCLE || READY || IE || colspan=2 | XBA16-17 || Unused || LAST BIT || TX CLR || GO
+| ERR || NEX || ATTN || MAINT || colspan=3 | Unused || CYCLE || RDY || IE || colspan=2 | XBA16-17 || Unused || LAST BIT || TX CLR || GO
 {{16bit-bitout}}
@@ Line 57: / Line 57: @@
 ===772434: Receive Command/Status Register (RXCSR)===
 {{16bit-header}}
-| ERROR || NEX || ATTN || MAINT || EOM || IMP NRDY || RDY ERR || CYCLE || READY || IE || colspan=2 | XBA16-17 || RX ENBL || HOST RDY || RX CLR || GO
+| ERR || NEX || ATTN || MAINT || EOM || IMP NRDY || RDY ERR || CYCLE || RDY || IE || colspan=2 | XBA16-17 || RX ENBL || HOST RDY || RX CLR || GO
 {{16bit-bitout}}

@@ Line 1: / Line 1: @@
 The '''IMP11-A ARPANET interface''' is a [[UNIBUS]] [[network interface]] produced by [[Digital Equipment Corporation|DEC]]'s Computer Special System division to connect allow a machine to connect to an [[ARPANET]] [[Interface Message Processor|IMP]].
-It consists of a [[BA11-E Mounting Box]] holding a pair of [[DR11-B parallel interface]]s (one for [[packet]] input, and one for output), and a custom [[backplane]] holding a number of M-series [[FLIP CHIP]]s.
+It consists of a [[BA11-E Mounting Box]] holding a pair of [[DR11-B parallel interface]]s (one for [[packet]] input, and one for output), and a custom [[backplane]] holding a number of M-series [[FLIP CHIP]]s. Level converters allow use as either a Local Host or Distant Host interface.
 [[Category: UNIBUS Peripherals]]
 [[Category: Network Interfaces]]