Honeywell DATANET 6661 Front-End Network Processor

C13-480-101 Processors Honeywell DATANET 6661 ( Front-end Network Processor

The DATANET 6661 is a front-end network processor for Honeywell's pre-DSA, large scale computer systems. The DATANET 6661 features up to 512K bytes of memory, a cache memory option, and support for up to 96 communications lines. The DATANET 6661 supports large and very large systems running GCOS, GCOS 8, or Multics operat ing software.

An entry-level DATANET 6661, including 64K bytes of memory, a heavy-duty console, one host connection, and support for up to 32 communications lines is priced at $51,569 plus $301 per month for mainte nance. One-, three-, and five-year leasing plans are also available.

CHARACTERISTICS VENDOR: Honeywell, Incorporated, Honeywell Plaza, Minneapolis, MN 33408. Telephone (612) 870-5200.

~ - DATE OF ANNOUNCEMENT: March 1980.

DATE OF FIRST DELIVERY: April 1980. ------.- NUMBER DELIVERED TO DATE: Information not available. Honeywell's DATANET 6661 network processor is offered as a front-end/or Honeywell mainframes in pre-DSA network envi SERVICED BY: Honeywell, Incorporated. ronments. It supports large and very large systems that run CONFIGURATION GCOS, GCOS 8, or Multics operating software. The DAT ANET 6661 front-end processor is based on Honeywell's Level 6 minicomputer technology. The basic MANAGEMENT SUMMARY configuration includes: the processor; 64K bytes of main memory; a System Support Controller with control panel and system diskette drive; a Direct Interface Adapter, which UPDATE: This report is being updated to reflect the provides for connection to the host; and internal support for changes that have occurred since the report was last up up to 32 communications lines. An optional, heavy-duty dated. User ratings/or the DATANET 6661,from Datapro's console is required for NPS operation. 1985 Network Users' Survey, are presented in this report. The processor operates asynchronously under firmware con trol and uses an internal Ui-bit word structure. An 1/0 The DATANET 6661 Front-end Network Processor Multiplexer is inherent in the basic system architecture, and (FNP), introduced in March 1980, is designed to act as a provides interfacing for data travelling between the I/O bus, dedicated communications system for Honeywell's DPS 8, to which the Channel Interface Bases, host connectors, and OPS 88, DPS 8M, Level 66/0PS, and Level 68/0PS cen 1/0 device controllers are connected, and the system bus, which connects the 6661 to the host processor and main tral systems in a pre-OSA network. The 6661 is based on memory. Internally, the 1/0 Multiplexer operates asyn Honeywell's Level 6 minicomputer technology. chronously in an interrnpt-driven fashion. The maximum data transfer rate is approximately 2M bytes per second. The basic DATANET 6661 consists of the processor, 64K The high-speed RAM memory subsystem performs all stor bytes of memory, a heavy-duty console, a direct interface age functions without restrictions on address sequences, adapter and host connection, and configurational support data patterns, or repetition rates. Memory features include for up to 32 communications lines. single- and double-word fetch, self-contained initialize and ( refresh logic, and standard EDAC (error detection and It can be upgraded in two series of steps: Mid-Level Perfor correction) capability. mance uses 128K bytes of memory, provides support for up Channel Interface Bases and Channel Interfaces can be to 64 lines, and boosts processor power by about 47 per added to the system as needed. Each Channel Interface Base 'Cent; High-Level Performance adds a cache memory and t> provides the logical interfacing for up to eight communica- ~

OCTOBER" 1985 © 1985 DATA PRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA REPRODUCTION PROHIBITED C13-480-102 Processors Honeywell DATANET 6661 Front-end Network Processor t> provides about 82 percent better performance than the ~ tions lines; each Channel Interface provides for physical Mid-Level Performance configuration. Either the Mid- or connection of one or two lines to the Channel Interface Base. High-Level Performance configurations can be expanded The maximum system configuration allows for a total of up to include up to 512K bytes of memory and/or support for to 12 Channel Interface Bases and up to 48 Channel Inter up to 96 lines. faces. For more information on Channel Interface Bases and Channel Interfaces, see ''TRANSMISSION SPECIFICA Physically, the 6661 occupies 7 square feet of floor space in TIONS" and Table 1. 32- or 64-line configurations; the 96-line configuration requires 14 square feet of floor space. The DATANET 6661 may be expanded in several steps to Mid- or High-Performance Levels. The first enhancement step (feature DCM660S) is a memory expansion to 128K The DATANET 6661 is logically compatible with the bytes. This step also adds a page control logic unit, a table system software and user-generated programs of previous driven mechanism by which memory beyond the basic 64K DATANET 6600 Family front-ends (e.g., Models 6678, bytes can be accessed and protected. Next, a performance 6641, and 6651), and supports Honeywell's Remote Ter and Jine configurability enhancement (feature DCE6661) is minal Supervisor (GRTS-II), Network Processing Super added, which increases processor power by 47 .percent and expands the line support to accommodate 64 lines, bringing visor (NPS), and Multics Communication System (MCS) the DATANET 6661 to the Mid-Performance Level. From software. Besides off-loading message management and that point, additional enhancements can be added in any line handling functions from the host, the 6661 (under order. Main memory can be expanded to 2S6K or S12K NPS) can perform traffic statistics gathering, automatic bytes. An additional line configurability option may be restart/recovery, and host-independent message switching added, expanding the line support to accommodate 96 lines. functions. A cache memory can be added to raise the DATANET 6661 to the High-Performance Level. The cache memory is used COMPETITIVE POSITION to perform anticipatory main memory reads and to store data recently used by the processor for future iterations of The DATANET 6661 competes intramurally with the currently executing programs, thus decreasing the time Honeywell's more capable and less-expensive DATA required to fetch instructions and data stored in main memory. Given the approprate configuration and instruction NET 8. The DATANET 6661 continues to be used in mix, the cache memory provides an execution rate of up to Honeywell's pre-SNA network environments. Honeywell 1M instructions per second. Systems with the cache memory continues to support these products but they strongly give about 82 percent higher performance than the Mid \ encourage users to migrate to DSA products. They attempt Performance configuration. to make this migration a smooth one through several Other options available for the 6661 include a second Direct compatible and coexistence features that are found in their Interface Adapter and one or two Peripheral Interface new products. Tne DATANET 6661 will continue to be Adapters. For more information on the Direct Interface offered as long as there are users in the pre-DSA environ Adapter, see "CONNECTION TO HOST COMPUTER." ment, but it faces an uncertain future. The Peripheral Interface Adapter provides access to the host system's mass storage processor. If a second Peripheral ADVANTAGES AND RESTRICITONS Interface Adapter is configured, only one may operate at any given time. One Peripheral Interface Adapter is required when NPS is selected as the 6661's operating system, to As a front-end processor in simple Honeywell networks, support its traffic statistics gathering, restart/recovery, and there is nothing wrong with the DATANET 6661. How- t> message switching capabilities. ..

TABLE 1. DATANET 6661 CHANNEL INTERFACES

Maximum Feature Number of Lines Type of Line Interfaces Speed, bps Number Supported

20 rna Current Loop (dual ch. pck) 9600 DCF6610 2 Dual RS-232-C Synchronous 9600 DCF6611 2 Dual RS-232-C Asynchronous 9600 DCF6612 2 CCITT fV.25 HDLC" 72,000 DCF6623 1 CCITT fV .35 Broadband 72.000 DCF6627 1 MIL-STD 188-C Asynchronous 9600 DCF6615 2 MIL-STD 188-C Synchronous 9600 DCF6614 1 MIL-STD 188-C HDLC 9600 DCF6617 1 MIL-STD ·188-C Broadband 72.000 DCF6616 1 Dual Bisynchronous 9600 DCF6618 2 Bisynchronous Broadband 72.000 DCF6621 1 HDLC Voice Grade 9600 DCF6620 1 HDLC Broadband" 72.000 DCF6622 1 Broadband 72.000 DCF6619 1 Direct Connect Asynchronous 9600 DCF6624 1 Direct Connect Synchronous 9600 DCF6625 1 Automatic Call Unit - DCF6613 2 Universal Modem Bypass 18,000 (asyn) DCF6927 1 19.200 (sync)

*Requites two Channel Interface Base 8101$.

© 1985 OAT APRQ RESEARCH CORPORATION. DELRAN. NJ 08075 USA OCTOBER 1986 REPRODUCTION PROHIBITED C13-4S0-103 Processors Honeywell DATANET 6661 Front-end Network Processor ( Configuration DCU6661 Front-end Network Processor

I I I Channel r---l I I- ..!.':!t~~sJ?)_ J--T""i!~ Cache Channel I Processor I I 1 I DCE6662I I Interface L------L ___ en I Base (4) 1 1 .il I DCF6607 1------1------1 E I I I I ~ I 1----1----'------I en I Memory (1) I I I I I 1 I I I r------1-..l , To Diskette ...... t- ....-i System 1 I I .... ~ 1 1 to 96 To Console ..... Support 1 I communications .... ~ Controller 1 1 1------1 lines Peripheral 1 I I Interface Adapter (2) I 1 To Host I -- I- ~C~6~:)1______--Ii , Mass Storage-- 1 Processor • .. Peripheral !g I I ...... H~-i Interface Adapter (2) I CD I 1 DCF6601 I 0 I I 1------, ::, I 1-- --- -, ChMnei-- _... Direct I Interface Adapter (3) 1 I_ JDt!!£f

(1) Basic memory is 64K bytes, expandable to 128K, 256K, or 512K bytes via DCM6605, DCM6606, and DCM6607 memory increments.

(2) One or two Peripheral Interface Adapters are optional.

(3) One Direct Interface Adapter, providing connection to the host, is standard. A second adapter, which serves only for back-up redundancy, is optional.

(4) Up to 12 Channel Interface Bases can be included in a maximum system configuration.

(5) Up to four Channel Interfaces can be attached to one Channel Interface Base. Depending on the type of line to be connected, each interface can support one or two lines; see Table 1.

t> ever, Honeywell's priority is the DSA enviroment and the ~ If network configuration demands more front-end processor DATANET 6661 is not equipped to function in that power or capacity than a single 6661 FNP can deliver, up to environment. Users who want to work in a Honeywell eight 6661s, each with its own memory and with or without its own performance enhancement options, can be con network should take a serious look at both network proces figured with a single host. Multiple 6661s can also provide sors and decide if they want to be in the DSA environment. for FNP redundancy and selection of networking software (e.g., by using NPS in one FNP and GRTS-I1 in another). USER REACTION TRANSMISSION SPECIFICATIONS Seven users of DAT ANET 6661 processors responded to Datapro's 1985 Network Users' Survey; among them, they Channel Interface Bases provide the connection between the had 14 systems. Their ratings are as follows: I/O Multiplexer and the Channel Interfaces. Each Channel Interface Base contains four slots for Channel Interfaces. Excellent Good Fair Poor WA* Each Channel Interface usually occupies one slot; the excep tions are that the HDLC Broadband and HDLC Overall performance 2 5 0 0 3.3 CCITT V.3S Channel Interfaces each require two slots. Up Ease of installation 1 6 0 0 3.1 to 12 Channel Interface Bases can be configured in a 6661, Ease of operation 2 5 0 0 3.3 providing support for up to 48 Channel Interfaces. Ease of expansion 1 5 1 0 3.0 Hardware reliability 2 4 1 0 3.1 Eighteen different Channel Interfaces are offered to accom Quality of vendor's 2 4 1 0 3.1 modate the requirements of various line types for specific software/firmware data transfer rates, bit orders, bits per character, informa- Ease of programming 2 2 2 0 3.0 tion codes, character sets, message formats, and communi Quality of vendor's 2 4 1 0 3.1 cations control procedures. Synchronous data rates up to maintenance service 72,000 bps and asynchronous data rates up to 9600 bps can ( Quality of vendor's 2 4 0 3.1 be accommodated. Except for the Bisynchronous Interface technical support** (DCF6618), lines can be either half- or full-duplex. Syn *Weighted Average based on a scale of 4.0 for Excellent. chronous and asynchronous direct cable connection is also **Technical support includes documentation, training, and J:> available. Depending on the type of Channel Interface, troubleshooting performed by the vendor. either one or two communications lines can be connected. ...

HoneyweliDATANET 6661 Front-end Network Processor t> Datapro was unable to contact any DATANET 6661 users tics journals, automatic restart/recovery, supervisory con by telephone for more detailed information. 0 trol through one or more Network Control Supervisory Stations, and host-independent message switching functions through the host system's mass storage processor, to which • Automatic dialing is available as a feature that occupies one the 6661 is connected via a Peripheral Interface Adapter interface slot in the Channel Interface Base. Each Auto optil,ln. matic Call Unit can handle up to two lines. A Universal Modem Bypass feature is also available for direct communi When attached to a Level 68/DPS or DPS 8M host, the cations line connection. See Table 1 for specifications of the 6661 uses the Multics Communication System (MCS) soft various Channel Interfaces. ware. MCS supports remote job entry and asynchronous, synchronous, and bisynchronous protocols and uses device CONNECTION TO HOST COMPUTER: The tables to accommodate various asynchronous devices. DATANET 6661 can be channel-attached to a local DPS 8, DPS 88, DPS 8M, Level 66/DPS, or Level 68/DPS host PERIPHERALS computer operating under a GCOS 8, GCOS, or Multics operating system, respectively. The Direct Interface adapter CONSOLE: The System Support Controller serves as the provides the physical interface to the host. One Direct interface between the I/O Multiplexer, the console, and a Interface Adapter is standard on the basic system. A second single 8-inch diskette drive, which is also standard and is Direct Interface Adapter can be added for a total of two used to load system test and diagnostic programs. The paths to one or two host computers. Since only one host link console is a desktop keyboard/printer terminal that prints can be active at any given time, a second Adapter would 132 print positions per line at 30 cps using a 64-character normally be used for back-up purposes. ASCII-character set.

SOFTWARE PERIPHERAL INTERFACE: Up to two Peripheral Inter face Adapters are optional. The primary reason for this The software used to drive the DATANET 6661 when it is capability is the attachment of disk for audit, restart, attached to a DPS 8, DPS 88, DPS 8M, or Level 66/DPS and message-switch purposes with the NPS software. host is the Network Processing Supervisor (NPS), Release GRTS-I/II does not support this option. NT2 or later. NPS interfaces with the GCOS 8 and GCOS operating systems, and requires no applications repro PRICING gramming. As an alternative, the Remote Terminal Super visor (either GRTS-I or GRTS-II), a low-overhead, Iimited The DATANET 6661 is available for purchase or for rental networking package, can be used. Both NPS and GRTS-I/II under a one-, three-, or five-year agreement. The standard support remote job entry, direct program access, message maintenance contract provides for service during the period concentration, transaction processing, and time-sharing from Monday through Friday from 8:00 a.m. to 6:00 p.m. facilities. NPS has additional capabilities that provide for Contracts for service beyond the standard period are avail device-unique control parameterization and more Oexible able; the additional charge is based on a fixed percentage of customization that allows support for nonstandard terminals the basic monthly maintenance fee. Alternatively, the user and protocols. NPS can also provide network traffic statis- can obtain on-call maintenance service at hourly rates.

EQUIPMENT PRICES Monthly Charge* 1-Year 3-Year 5-Year Purchase Monthly Lease Lease Lease Prices Maint. ($) ($) ($) ($) ($)

DCU6661 Basic DA T ANET 6661; includes 64K bytes of memory, 1,990 1,862 1,669 36,605 261 control pane/, System Support Controller, one Direct In- terface Adapter, and support for up to 32 communications lines

DCM6605 Memory Increment; expands main memory from 64K to 589 562 522 8,400 218 128K bytes; includes paging module; max. 1 DCM6606 Memory Increment; expands main memory from 128K to 693 673 624 10,920 109 256K bytes; requires DCM6605 and DCE6661; max. 1 DCM6607 Memory Increment; expands main memory from 256K to 1,387 1,345 1,248 21,840 218 512K bytes; requires DCM6605; DCM6606, and DCE6661; max. 1

DCE6661 Performance and Line Configurability· Enhancement; in- 700 654 578 13,209 113 creases processor performance to Mid-Performance Level; increases line configurability to a maximum of 64 lines; requires DCM6605 DCE6662 Cache Memory Performance Enhancement; increases pro- 1,365 1,267 1,120 29,840 65 cessor performance to High-Performance Level; requires DCM6605 and DCE6661 DCE6663 Line Configurability Enhancement; increases line configura- 154 148 139 3,546 0 bility to a maximum of 96 lines; requires DCM6605 and '\ DCE6661

DCF6601 Peripheral Interface Adapter; max. 2 298 279 256 7,070 36 DCF6602 Second Direct Interface Adapter; max. 1 298 279 249 7,070 36 DCF6607 Channel Interface Base; max. 12 70 65 58 1,651 9 DCF6606 Heavy-duty console and stand (reql,lired for NPS) 283 278 262 7,345 35 ~

Honeywell DATANET 6661 Front-end Network Processor (

Channel Interface Options- DCF6610 20 ma Current Loop Dual Channel Package 46 44 39 1.180 4 • DCF6611 Dual Synchronous RS-232-C 60 56 50 1.450 7 DCF6612 Dual Asynchronous RS-232-C 26 25 23 590 4 DCF6613 Automatic Call Unit 46 44 39 1.180 4 DCF6614 Synchronous MIL-STD 188-C 63 59 53 1.501 8 DCF6615 Asynchronous MIL-STD 188-C 63 59 53 1.501 8 DCF6616 8roadband MIL-STD 188-C 63 59 53 1.501 8 DCF6617 HDLC MIL-STD 188-C 106 99 89 2.573 11 DCF6618 Dual Bisynchronous 60 56 50 1.450 7 DCF6619 Broadband 125 117 104 3.056 12 DCF6620 HDLC Voice Grade 106 99 89 2.573 11 DCF6621 Bisynchronous Broadband 125 117 104 3.056 12 DCF6622 HDLC Broadband 125 117 104 3.056 12 DCF6623 HDLC CCITT/V.35 139 129 114 3.430 12 DCF6627 Broadband CCITT/V.35 139 129 114 3.430 12 DCF6626 Direct Connect Feature 15 14 13 350 2 DCF6927 Universal Modem Bypass 30 30 24 415 11

SOFTWARE PRICES

Optional Monthly Support Charge Service ($) ($) 1 SVC8002 Network Processing Supevisor (NPS) 974 209 SVC8003 NPS HDLC Option 129 11 SVC8004 Extended FNP Support 139 28 SVC8006 Host File Transceiver for Level 6 16 6 SVC8050 Interactive BSC Support for NPS 75 15 SVC8000 Remote Terminal Supervisor-II (GRTS-II) 273 44 SVC8001 GRTS-II HDLC Option 129 11 SGC6800 Multics Communication System (MCS) "275 SVC8040 Interactive BSC Support for GRTS-II 75 15 SVC8048 GRTS-I 450 110

'Includes prime-shift maintenance. "Includes support service .•

(

C13-4S0-101 Processors Honeywell Datanet 6661 Front-end Network Processor (

A front-end network processor for Honey well's pre-DSA. large-scale computer systems.

The Datanet 6661 features up to 512K bytes of memory. a cache memory option. and support for up to 96 communications lines. The Datanet 6661 can be connected to a DPS 8. Level 66/DPS. or Level 68/DPS central system.

An entry level Datanet 6661. including 64K bytes of memory. a heavy-duty console. one host connection. and support for up to 32 communications lines is priced at $51.569 plus $301 per month for maintenance. One-. three-. and five-year leasing are also available . . . " "'-. .... ' .",,,,""," CHARACTERISTICS --~- --","-- VENDOR: Honeywell Incorporated, Honeywell Plaza, Minneapolis, MN 33408. Telephone (612) 870-5200. -~ .:::,----..:..,...... ~ DATE OF ANNOUNCEMENT: March 1980 • ------~""':: DATE OF FIRST DELIVERY: April 1980.

NUMBER DELIVERED TO DATE: Information not MANAGEMENT SUMMARY available.

The Datanet 6661 Front-End Network Processor (FNP), SERVICED BY: Honeywell Incorporated. introduced in March 1980, is designed to act as a dedicated CONFIGURATION communications system for Honeywell's DPS 8, DPS 88, DPS 8M, Leve166/DPS, and Leve168/DPS central systems The Datanet 6661 front-end processor is based on Honey in a Phase I (i.e., pre-DSA) Distributed Systems Environ well's Level 6 minicomputer technology. The basic configu ment (DSE) network. The 6661 is based on Honeywell's, ration includes: the processor; 64K bytes of main memory; a Level 6 minicomputer technology. System Support Controller with control panel and system diskette drive; a Direct Interface Adapter, which provides for connection to the host; and internal support for up to 32 The basic Datanet 6661 consists of the processor, 64K bytes communications lines. An optional, heavy-duty console is of memory, a heavy-duty console, a direct interface adapter required for NPS operation. and host connection, and configurational support for up to 32 communications lines. The processor operates asynchronously under firmware con trol and uses an internal 18-bit word structure. An I/O Multiplexer is inherent in the basic system architecture, and It can be upgraded in two series of steps: Mid-Level Perfor provides interfacing for data travelling between the I/O bus, mance uses 128K bytes of memory, provides support for up to which the Channel Interface Bases, host connectors, and to 64 lines, and boosts processor power by about 47%; I/O device controllers are connected, and the system bus, High-Level Performance adds a cache memory and pro which connects the 6661 to the host processor and main memory. Internally, the I/O Multiplexer operates asyn vides about 82% better performance than the Mid-Level chronously in an interrupt-driven fashion. The maximum configuration. Either the Mid- or High-Level Performance data transfer rate is approximately 2M bytes per second. configurations can be expanded to include up to S12K o bytes of memory and/or support for up to 96 lines. The high-speed RAM memo~y subsystem performs all stor age functions without restrictions on address sequences, Physically, the 6661 occupies 7 square feet of floor space in data patterns, or repetition rates. Memory features include single- and double-word fetch, self-contained initialize and 32- or 64-line configurations; the 96-line configuration refresh logic, and standard EDAC (error detection and requires 14 square feet of floor space. t> correction) capability. ~

1::> The Datanet 6661 is logically compatible with the system ~ Channel Interface Bases and Channel Interfaces can be software and user-generated programs of previous Datanet added to the system as needed. Each Channel Interface Base provides the logical interfacing for up to eight communica 6600 Family front-ends (e.g., Models 6678, 6641, and tions lines; each Channel Interface provides for physical 6651), and supports Honeywell's Remote Teminal Super connection of one or two lines to the Channnel Interface visor (GRTS I or II), Network Processing Supervisor Base. (NPS), and Multics Communication System (MCS) soft ware. Besides off-loading message management and line The maximum system configuration allows for ~ total of up handling functions from the host, the 6661 (under NPS) to 12 Channel Interface Bases and up to 48 Channel Inter faces. For more information on Channel Interface Bases and can perform traffic statistics gathering, automatic restart/ Channel Interfaces, see "TRANSMISSION SPECIFICA recovery, and host-independent message switching TIONS" and Table 1. functions. The Datanet 6661 may be expanded in several steps to Mid or High-Performance Levels. The first enhancement step COMPETITIVE POSITION (feature DCM660S) is a memory expansion to 128K bytes. This step also adds a page control logic unit, a table-driven The Datanet 6661 competes intramurally with Honeywell's mechanism by which memory beyond the basic 64K bytes more capable and less-expensive Datanet 8. The Datanet can be accessed and protected. Next, a performance and line 6661 remains the more popular of the two processors, since configurabUity enhancement (feature DCE6661) is added, which increases processor power by 47% and expands the many current Honeywell users have yet to upgrade their line support to accommodate 64 lines, bringing the Datanet networks to DSA. As Honeywell continues to realize the 6661 to the Mid-Performance Level. From that point, addi broad networking capabilities of DSA, Datanet 6661 users tional enhancements can be added in any order. Main will migrate in increasing numbers to the Datanet 8. memory can be expanded to 2S6K or S12K bytes. An addi tional line configurability option may be added, expanding the line support to accommodate 96 lines.

ADVANTAGES AND RESTRICITONS A cache memory can be added to raise the Datanet 6661 to the High-Performance Level. The cache memory is used to perform anticipatory main memory reads and to store data As a front-end processor in simple Honeywell networks, recently used by the processor for future iterations of the there is nothing wrong with the Datanet 6661. However, as currently executing programs, thus decreasing the time Honeywell continues to develop DSA, the 6661 will have to required to fetch instructions and data stored in main memo fall by the wayside in favor ofthe DSA-compatible Datanet ry. Given the approprate configuration and instruction mix, the cache memory provides an execution rate of up to 1M ,/ 8. instructions per second. Systems with the cache memory give about 82% higher performance than the Mid-Perfor USER REACTION mance configuration. Other options available for the 6661 include a second Direct Six users of Datanet 6661 processors responded to Data Interface Adapter, and one or two Peripheral Interface pro's 1983 Network Users' Survey; among them, they had Adapters. For more information on the Direct Interface 15 systems. Their ratings are as follows: 1::> Adapter, see "CONNECTION TO HOST COMPUTER." ~

TABLE 1. DATANET 6661 CHANNEL INTERFACES

Maximum Feature Number of Lines Type of Line Interfaces Speed. bps Number Supported

20 rnA Current Loop 9600 DCF6610 2 RS-232-C Synchronous 9600 DCF6611 2 RS-232-C Asynchronous 9600 DCF6612 2 CCITT-V.25 HDLC' 72,000 DCF6623 1 CCITT-V.35 Broadband 72,000 DCF6627 1 MIL STD 188-C Asynchronous 9600 DCF6615 2 MIL STD 188-C Synchronous 9600 DCF6614 1 MIL STD 188-C HDLC 9600 DCF6617 1 MIL STD 188-C Broadband 72,000 DCF6616 1 Bisynchronous 9600 DCF6618 2 Bisynchronous Broadband 72,000 DCF6621 1 HDLC Voice Grade 9600 DCF6620 1 HDLC Broadband" 72,000 DCF6622 1 Broadband 72,000 DCF6619 1 Direct Connect Asynchronous 9600 DCF6624 1 Direct Connect Synchronous 9600 DCF6625 1 Automatic Call Unit - DCF6613 2 Universal Modem Bypass 18,000 (async.) DCF6927 1 \ 19,200 (sync.) '-- /

*Requires two Channel Interface Base slots.

Configuration f DCU6661 Front-end Network Processor ! I I Channel r----I I I- ~t~a~sJ!i)_ ~. I Cache I 1 Channel I Processor I I DCE6662I I Interface 1------ Base (4) , , L ___I ~ : DCF6607 1------I I I I ------! J: /------'------I I I Memory (1) I I I I I I I I I ______1_...l I I To Diskette ....::.;1-'.:------1 System II I 1 to 96 To Console - • Support 1 I communications - ~ Controller I I I lines 1 1------Peripheral I I Interface Adapter (2) I I I To Host .. I I- ~C~6!,~ _____ --Ii I Mass Storage I Processor Peripheral ~ , 1 ..._1-,".-1 Interface Adapter (2) , !Xl , I DCF6601 I 0 I _... i------, ::, I 1-- --- -, Ctumnel-- Direct I _. I_ lDt!llfl!!;e'L!.51. Interface Adapter (3) I I I Channel I To host 1 Interface processors I-":>::~~------I , r --- - - Direct I I I Base (4) _._. DCF6607 I Interface Adapter (3) I I I 1------I---'-I.~ DCF66021! I

(1) Basic memory is 64K bytes, expandable to 128K, 256K, or 512K bytes via DCM6605, DCM6606, and DCM6607 memory increments.

(2) One or two Peripheral Interface Adapters are optional.

(3) One Direct Interface Adapter, providing connection to the host, is standard. A second adapter, which serves only for backup redundancy, is optional.

(4) Up to 12 Channel Interface Bases can be included in a maximum system configuration.

(5) Up to four Channel Interfaces can be attached to one Channel Interface Base. Depending on the type of line to be connected, each interface can support one or two lines; see Table 1.

1> Excellent Good Fair Poor WA* Interface Adapter is configured, only one may operate at any ------given time. One Peripheral Interface Adapter is required Overall performance 2 4 0 0 3.3 when NPS is selected as the 6661's operating system, to Ease of installation 3 2 I 0 3.3 support its traffic statistics gathering, restart/recovery, and Ease of operation 3 3 0 0 3.5 message switching capabilities. Ease of expansion 1 3 2 0 2.8 Hardware reliability 3 3 0 0 3.5 If network configuration demands more front-end processor Quality of vendor's 1 3 2 0 2.8 power or capacity than a single 6661 FNP can deliver, up to software/firmware eight 6661 's, each .with its own memory and with or without Ease of programming 1 2 1 1 2.6 its own performance enhancement options, can be config Quality of vendor's 3 3 0 0 3.5 ured with a single host. Multiple 666Is can also provide for maintenance service FNP redundancy and selection of networking software (e.g., Quality of vendor's 4 0 3.0 by using NPS in one FNP and GRTS-II in another). technical support**

*Weighted Average based on a scale of 4.0 for Excellent. TRANSMISSION SPECIFICATIONS **Technical support includes documentation, training and trouble-shooting performed by the vendor. Channel Interface Bases provide the connection between the I/O Multiplexer and the Channel Interfaces. Each Channel Datapro was unable to contact any Datanet 6661 users by Interface Base contains four slots for Channel Interfaces. telephone for more detailed information. 0 Each Channel Interface usually occupies one slot; the excep (/ tions are that the HDLC Broadband and HDLC CCITT V.3S Channel Interfaces each require two slots. Up to 12 ~ The Peripheral Interface Adapter provides access to the Channel Interface Bases can be configured in a 6661, pro- host system's mass storage processor. If a second Peripheral viding support for up to 48 Channel Interfaces. ~

~ Eighteen dHferent Channel Interfaces are offered to accom device-unique control parameterization and more tlex:ible modate the requirements of various line types for specific customization that allows support for non-standard termi data transfer rates, bit orders, bits per character, informa nals and protocols. NPS can also provide network traffic tion codes, character sets, message formats, and communi statistics journals, automatic restart/recovery, supervisory cations control procedures •. Synchronous data rates up to control through one or more Network Control Supervisory 72,000 bps and asynchronous data rates up to 9600 bps can Stations, and host-independent message switching functions be accommodated. Ex;cept for the Bisynchronous Interface through the host system's mass storage processor, to which (DCF6618), lines can be either half- or full-duplex;. Syn the 6661 is connected via a Peripheral Interface Adapter chronous and asynchronous direct cable connection is also option. available. Depending on the type of Channel Interface, either one or two communications lines can be connected. When attached to a Level 68/DPS or DPS 8M host, the Automatic dialing is available as a feature that occupies one 6661 uses the Multics Communication System (MCS) soft interface slot in the Channel Interface Base. Each Automat ware. MCS supports remote job entry and asynchronous, ic Call Unit can handle up to two lines. A Universal Modem synchronous, and bisynchronous protocols and uses device Bypass feature is also available for direct communications tables to accommodate various asynchronous devices. line connection. See Table 1 for specifications of the various Channel Interfaces. PERIPHERALS CONNECTION TO HOST COMPUTER: The Datanet 6661 can be channel-attached to a local DPS 8, DPS 88, CONSOLE: The System Support Controller serves as the DPS 8M, Level 66/DPS, or Level 68/DPS host computer interface between the I/O Multiplexer, the console, and a operating under a GCOS 8, GCOS, or Multics operating single 8-inch diskette drive, which is also standard and is system, respectively. The Direct Interface Adapter provides used to load system test and diagnostic programs. The the physical interface to the host. One Direct Interface console is a desktop keyboard/printer terminal that prints Adapter is standard on the basic system. A second Direct 132 print positons per line at 30 cps using a 64-character Interface Adapter can be added for a total of two paths to one ASCII character set. or two host computers. Since only one host link can be active at any given time, a second Adapter would normally be used PERIPHERAL INTERFACE: Up to two Peripheral Inter for back-up purposes. face Adapters are optional. The primary'reason for this capability is the attachment of disk for audit, restart, and SOFTWARE message-switch purposes with the NPS software. GRTS-I/ II does not support this option. The software used to drive the Datanet 6661 when it is attached to a DPS 8, DPS 88, DPS 8M, or Level 66/DPS PRICING host is the Network Processing Supervisor (NPS), Release NT2 or later. NPS interfaces with the GCOS 8 and GCOS The Datanet 6661 is available for purchase or for rental operating systems, and requires no applicatons reprogram under a one-, three-, or five-year agreement. The standard ming. As an alternative, the Remote Terminal Supervisor maintenance contract provides for service during the period (either GRTS-I or GRTS-II), a low-overhead, limited from Monday through Friday from 8:00 a.m. to 6:00 p.m. networking package, can be used. Both NPS and GRTS 1/11 Contracts for sevice beyond the standard period are avail support remote job entry, direct program access, message able; the additional charge is based on a fixed percentage of concentration, transaction processing, and time-sharing fa the basic monthly maintenance fee. Alternatively, the user cilities. NPS has additional capabilities that provide for can obtain on-call maintenance service at hourly rates.

Monthly Charge*

1-Year 3-Year 5-Year Monthly Lease Lease Lease Purchase Maint.

DCU6661 Basic Datanet 6661; includes 64K bytes of memory, con $1,990 $1,862 $1,669 $36,605 $261 trol panel, System Support Controller, one Direct Inter face Adapter, and support for up to 32 communications lines

DCM6605 Memory Increment; expands main memory from 64K to 589 562 522 8.400 218 128K bytes; includes paging module; max. 1 DCM6606 Memory Increment; expands main memory from 128K to 693 673 624 10,920 109 256K bytes; requires DCM6605 and DCE6661; max. 1 DCM6607 Memory Increment; expands main memory from 256K to 1,382 1,345 1,248 21,840 218 512K bytes; requires DCM6605; DCM6606, and DCE6661; max. 1

DCE6661 Performance and Line Configurability Enhancement; in- 700 654 578 13,209 113 creases processor performance to Mid-Performance Lev- el; increases lirie configurability to a maximum of 64 lines; requires DCM6605

'Includes prime-shift maintenance. " "Includes Support Service.

© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA AUGUST 1983 REPRODUCTION PROHIBITED C13-4S0-105 Processors Honeywell Datanet 6661 ... Front-end Network Processor ( Monthly Charge* 1-Year 3-Year 5-Year Monthly Lease Lease Lease Purchase Maint.

DCE6662 Cache Memory Performance Enhancement; increases pro- 1,365 1,267 1,120 29,840 65 cessor performance to High-Performance level; requires DCM6605 and DCE6661 DCE6663 line Configurability Enhancement; increases line configura- 154 148 139 3,546 0 bility to a maximum of 96 lines; requires DCM6605 and OCE6661

DCF6601 Peripheral Interface Adapter; max. 2 276 258 237 7,070 36 OCF6602 Second Direct Interface Adapter; max. 1 276 258 231 7,070 36 OCF6607 Chl\rmel Interface Base; max. 12 65 60 54 1,651 9 OCF6606 Heavy-duty console (required for NPS) 262 257 243 7,345 35

Channel Interface Options- OCF6610 20 rnA Current loop 43 41 36 1.180 4 DCF6611 Synchronous RS-232-C 56 52 46 1,450 7 DCF6612 Asynchronous RS-232-C 24 23 21 590 4 DCF6613 Automatic Call Unit 43 41 36 1,180 4 DCF6614 Synchronous Mil STD 188-C 58 35 49 1,501 8 OCF6615 Asynchronous MIL STO 188-C 58 55 49 1,501 8 DCF6616 Broadband Mil STO 188-C 58 55 49 1,501 8 DCF6617 HOlC Mil STD 188-C 98 92 82 2,573 11 DCF6618 Bisynchronous 56 52 46 1,450 7 OCF6619 Broadband 116 10B 96 3,056 12 OCF6620 HDlC Voice Grade 98 92 82 2,573 11 OCF6621 Bisynchronous Broadband 116 108 96 3,056 12 OCF6622 HDlC Broadband 116 108 96 3,056 12 DCF6623 HDlC CCITT-V.35 129 119 106 3,430 12 OCF6627 Broadband CCITT-V.35 129 119 106 3,430 12

DCF6624 Direct Connect Capability, asynchronous 13 13 11 350 1 DCF6625 Direct Connect Capability, synchronous 17 16 15 480 1 DCF6927 Universal Modem Bypass 28 28 22 415 11

Software Monthly Optional Charge Support Service

SVC8002 Network Processing Supevisor (NPS) $9/4 $209 SVC8003 NPS HOlC Option 129 11 SVC8004 Extended FNP Support 139 28 SVC8006 Host File Transceiver for level 6 16 6 SVC8050 Interactive BSC Support for NPS 75 15 SVC8000 Remote Terminal Supervisor-II (GRTS-II) 273 44 SVC8001 GRTS-II HOlC Option 129 11 SGC6800 Multics Communication System (MCS) 275·· SVC8040 Interactive BSC Support for GRTS-II 75 15 SVC8048 GRTS-I 450 110

·Includes prime-shift maintenance. ··Includes Support Service. •

(

C13-4S0-101 Processors

Honeywell Datanet 6661

A front-end network processor for Honey well's large-scale computer systems.

The Datanet 6661 features up to 512K bytes of memory, a cache memory option, and support for up to 96 communications lines. The Datanet 6661 can be connected to a DPS 8, Level 66/DPS, or Level 68/DPS central system.

An entry level Datanet 6661, including 64K bytes of memory, a heavy-duty console, one host connection, and support for up to 32 communications lines is priced at $64,849, plus $361 per month for maintenance. One-, three-, and five-year leasing is also available.

CHARACTERISTICS

VENDOR: Honeywell Incorporated, Honeywell Plaza, Minneapolis, MN 33408. Telephone (612) 870-5200.

DATE OF ANNOUNCEMENT: March 1980.

DATE OF FIRST DELIVERY: April 1980.

NUMBER DELIVERED TO DATE: InCormation not available.

SERVICED BY: Honeywell Incorporated.

CONFIGURATION

MANAGEMENT SUMMARY The Datanet 6661 Cront-end processor is based on Honeywell's Level 6 minicomputer technology. The basic configuration includes: the processor; 64K bytes oC main The Datanet 6661 Front-End Network Processor (FNP), memory; a System Support Controller with attached heavy introduced in March 1980, is designed to act as a dedicated duty system console and system diskette drive; a Direct communications system to Honeywell's DPS 8, Level Interface Adapter, which provides Cor connection to the host; and internal support Cor up to 32 communications 66/DPS, and Level 68/DPS central systems in a Phase I lines. (i.e., non-DSA) Distributed Systems Environment (DSE) network. The 6661 replaces the Datanet 6641 and 6651 The processor operates asynchronously under firmware front-ends previously offered for those systems. control and utilizes an internal I8-bit word structure. An I/O Multiplexer is inherent in the basic system architecture, Improvements over the 6641/6651 include utilization of and provides interfacing Cor data travelling between the I/O 16K MOS technology, which allows the system to be bus, to which the Channel Interface Bases, host connectors, configured with 512K bytes of memory, and new and I/O device controllers are connected, and the system bulkhead connectors, which simplify cable configuration bus, by which the processor and main memory are accessed. and installation. Internally, the I/O Multiplexer operates asynchronously in an interrupt-driven Cashion. The maximum data transCer rate is approximately 2M bytes per second. The 6661 is based on Honeywell's Level 6 minicomputer technology. The basic Datanet 6661 consists of the The high-speed RAM memory subsystem performs all processor, 64K bytes of memory, a heavy-duty console, a storage Cunctions without restrictions on address sequences, data patterns, or repetition rates. Memory Ceatures include direct interface adapter and host connection, and single- and double-word Cetch, selC-contained initialize and configurational support for up to 32 communications reCresh logic, and standard EDAC (error detection and lines. correction) capability.

Upgrading of the Datanet 6661 is accomplished in two All Channel Interface Bases and all Channel Interfaces are added to the system as needed. Each Channel Interface Base series of steps: Mid-Level Performance utilizes 128K provides the logical interfacing Cor up to eight communica bytes of memory, provides support for up to 64 lines, and tions lines; each Channel Interface provides Cor physical boosts processor power by about 47%; High-Level 1:> connection oC one or two lines to the Channel Interface Base. ~

Table 1. Datanet 6661 Channel Interfaces ( Maximum Feature Number of Unes ~./ Type of Une Interfaces Speed. bps Number Supported

20 mA Current Loop 9600 DCF6610 2 RS-232-C Synchronous 9600 DCF6611 2 RS-232-C Asynchronous 9600 DCF6612 2 CCITT-V.35 HDLC" 72,000 DCF6623 1 CCITT-V.35 Broadband 72,000 DCF6627 1 MIL STD 1B8-C Asynchronous 9600 DCF6615 2 MIL STD 188-C Synchronous 9600 DCF6614 1 MIL STD 188-C HDLC 9600 DCF6617 1 MIL STD 188-C Broadband 72.000 DCF6616 1 Bisynchronous 9600 DCF6618 2 Bisynchronous Broadband 72,000 DCF6621 1 HDLC Voice Grade 9600 DCF6620 1 HDLC Broadband" 72,000 DCF6622 1 Broadband 72,000 DCF6619 1

Direct Connect (Asynchronous or Synchronous) 9600 DCF6626 1

Automatic Call Unit - DCF6613 2

Universal Modem Bypass 1800 (async.); DCF6927 1 19,200 (sync.)

"Requires two Channel Interface Base slots. t> Performance adds a cache memory and provides about the High-Performance Level. The cache memory is used to 82% better performance than the Mid-Level configura perform anticipatory main memory reads and to store data tion. Either the Mid- or High-Level Performance recently used by the processor for future iterations of the currently executing programs, thus decreasing the time configurations can be expanded to include up to 512K required to fetch instructions and data stored in main bytes of memory and/ or support for up to 96 lines. memory. Given the appropriate configuration and instruction mix, the cache memory provides an execution rate Physically, the handsome 6661 occupies only 7 square of up to 1M instructions per second. Systems with the cache memory give about 82% higher performance than the Mid feet of floor space in 32- or 64-line configurations; the 96- Performance configuration. line configuration requires 14 square feet of floor space. Other options that are available for the 6661 include a The Datanet 6661 is logically compatible with the system second Direct Interface Adapter, and one or two Peripheral software and user-generated programs of previous Interface Adapters. For more information on the Direct Interface Adapter, see "CONNECTION TO HOST Datanet 6600 Family front-ends (e.g., Models 6678, 6641, COMPUTER." The Peripheral Interface Adapter provides and 6651), and supports Honeywell's Remote Terminal access to the host system's mass storage processor. If a Supervisor (GRTS I or II), Network Processing second Peripheral Interface Adapter is configured, only one Supervisor (NPS), and Multics Communication System may be operative at any given time. One Peripheral Interface Adapter is required when NPS is selected as the 6661's (M CS) software. Besides off-loading the host from operating system, so that its traffic statistics gathering, message management and line handling functions, the restart/recovery, and message switching capabilities can be 6661 (under NPS) can perform traffic statistics gathering, supported. automatic restart/ recovery, and host-independent message switching functions.D If network configuration demands more front-end processor power or capacity than a single 6661 FNP can deliver, up to eight 6661s, each with its own memory and with or without ~ The maximum system configuration allows for a total of up its own performance enhancement options, can be to 12 Channel Interface Bases and up to 48 Channel configured with a single host. Multiple 6661s can also Interfaces. For more information on Channel Interface' provide for FNP redundancy and selection of networking Bases and Channel Interfaces, see "TRANSMISSION software (e.g., by using NPS in one FNP and GRTS-II SPECIFICA TIONS" and Table 1. in another). The Datanet 6661 may be expanded in several steps to Mid or High-Performance Levels. The fJrSt enhancement step TRANSMISSION SPECIFICATIONS (feature DCM6605) is a memory expansion to 128K bytes. This step also adds a page control logic unit, a table-driven Channel Interface Bases provide the interfacing between the mechanism by which memory beyond the basic 64K bytes 1/ 0 Multiplexer and the Channel Interfaces. Each Channel can be accessed and protected. Next, a performance and line Interface Base contains four slots for Channel Interfaces. configurability enhancement (feature DCE6661) is added, Each Channel Interface generally occupies one slot; the which increases processor power by 47% and expands the exception is that the HDLC Broadband and HDLC CCITT line support to accommodate 64 lines, bringing the V.35 Channel Interfaces each require two Channel Interface Datanet 6661 to the Mid-Performance Level. From that Base slots. Up to 12 Channel Interface Bases can be point, additional enhancements can be added in any order. configured with a 6661, providing support for up to 48 Main memory can be expanded to 256K or 512K bytes. An Channel Interfaces. additional line configurability option may be added, expanding the line support to accommodate 96 lines. Fifteen different Channel Interfaces are offered to accommodate the requirements of various line types for A cache memory can be added to raise the Datanet 6661 to specific data transfer rates, bit orders, bits per character, ...

( Configuration DCU6661 Front-end Network Processor

I I Channel I I I I- .!!:!t~a~sJ.?)_ r---l I ! I Cache I I I Channel I Processor Imerface I DCE6662I I 1 1------L ___ I I Base (41 I .. DCF6607 :J I II) I I 1------~------I E I 1 I I 'iii I ----- ">- 1----1----'- I fJl I Memory (11 I I I I I I 1 ~ I I )( I r- ______.L_~ %" I "S I To Diskette ..... System I :2 1 t 096 - Support 1 I co mmunications To Console --- 5 ..... ,. Controller S- I lin es 1 :J 0 I _.. t------Peripheral 1 "- Interface Adapter (2) 5 1 To Host .. I Co I DCF6601 I .s Mass Storag e I Processor f- -;e~;';r';;------, :J'" I ..... ,. Interface Adapter (2) 1 II) DCF6601 0 1 I ::, 1------,.------I Channel _... ------1Direct I 1_ lDt!!flq£eu5.L - ..... - Interface Adapter (3) I I Channel I DCF6602 To host I Interface r - ---- processors ------I Base (4) Direct 1 I ..... ,. Interface Adapter (3) I DCF6607 I 1 1------I DCF6602 I ,

(1) Basic memory is 64K bytes, expandable to 12BK, 256K, or 512K bytes via DCM6605, DCM6606, and DCM6607 memory increments.

(2) One or two Peripheral Interface Adapters are optional.

(3) One Direct Interface Adapter, providing connection to the host, is standard. A second adapter, which serves only for backup redundancy, is optional.

(4) Up to 12 Channel Interface Bases can be included in a maximum system configuration.

(5) Up to four Channel Interfaces can be attached to one Channel Interface Base. Depending on the type of line to be connected, each interface can support one or two lines; see Table 1.

~ information codes, character sets, message formats, and given time, use of a second Adapter would normally be used communications control procedures. Synchronous data for back-up purposes. rates up to 72,000 bps and asynchronous data rates up to 9600 bps can be accommodated. Except for the Bisynchron ous Interface (DCF6618), lines can be either half- or full SOFTWARE duplex. Synchronous and asynchronous direct cable connection is also provided for. Depending on the type of The software used to drive the Datanet 6661 when Channel Interface, either one or two communications lines it is attached to a DPS 8 or Level 66/DPS host is the can be connected. See Table 1 for specifications of the Network Processing Supervisor (NPS), Release NT2 or various Channel Interfaces. later. NPS will interface with GCOS 8 and GCOS operating systems, and requires no applications reprogramming. As an Automatic dialing is available as a feature that occupies one alternative, the Remote Terminal Supervisor (either GRTS-I interface slot in the Channel Interface Base. Each Automatic or GRTS-II), a low-overhead, limited-networking package, Call Unit can handle up to two lines. A Universal Modem can be used. Both NPS and GRTS 1/11 support remote job Bypass feature is also available for direct communications entry, direct program access, message concentration, line connection. transaction processing, and time-sharing facilities. NPS has additional capabilities that provide for device-unique control CONNECTION TO HOST COMPUTER: The Datanet parameterization and more flexible customization that 6661 can be channel-attached to a local DPS 8, Level allows non-standard terminals and protocols to be 66/DPS, or Level 68/DPS host computer operating under a supported. NPS can also provide network traffic statistics GCOS 8, GCOS, or Multics operating system, respectively. journals, automatic restart/recovery, supervisory control ( The Direct Interface Adapter provides the physical through one or more Network Control Supervisory interfacing to the host. One Direct Interface Adapter is Stations, and host-independent message switching functions standard on the basic system. A second Direct Interface through the host system's mass storage processor, to which Adapter can be added for a total of two paths to one or two the 6661 is counected via a Peripheral Interface Adapter host computers. Since only one host link can be active at any option. ~ MAY 1981 © 1981 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA REPRODUCTION PROHIBITED C13-480-104 Processors Honeywell Datanet 6661

~ When attached to a Level 68/DPS host, the Multics PERIPHERAL INTERFACE: Up to two Peripheral Communication System (MCS) software is used. MCS Interface Adapters are optional. The primary reason for this supports remote job entry and asynchronous, synchronous, capability is the attachment of disk for audit, restart, and and bisynchronous protocols and utilizes device tables to message-switch purposes with the NPS software. GRTS-I/II accommodate various asynchronous devices. does not support this option.

PRICING PERIPHERALS The Datanet 6661 is available for purchase or for rental CONSOLE: The System Support Controller serves as the under a one-, three-, or five-year agreement. The standard interface between the I/O Multiplexer, the heavy-duty maintenance contract provides for service during the period console, which is a standard component of the basic system, from Monday through Friday from 8:00 a.m. to 6:00 p.m. and a single 8-inch diskette drive, which is also standard and Contracts for service beyond the standard period are is used to load system test and diagnostic programs. The available; the additional charge is based on a fixed console is a desktop keyboard/printer terminal that prints percentage of the basic monthly maintenance fee. 132 print positions per line at 30 cps using a 64-character Alternatively, the user can obtain on-call maintenance ASCII character set. service at standard hourly rates of $109 per man-hour.

Monthly Charge*

1-Year 3-Year 5-Year Monthly Lease lease Lease Purchase Maint.

DCU6661 Basic Datanet 6661; includes 64K bytes of memory. heavy-duty console. $1.843 $1.724 $1.545 $48.805 $261 System Support Controller. one Direct Interface Adapter. and support for up to 32 communications lines

DCM6605 Memory Increment; expands main memory from 64K to 128K bytes; includes 545 520 483 10.500 218 paging module; max. 1 DCM6606 Memory Increment; expands main memory from 128K to 256K bytes; requires 642 623 578 14.000 109 DCM6605 and DCE6661; max. 1 DCM6607 Memory Increment; expands main memory from 256K to 512K bytes; requires 1.284 1.245 1.156 28.000 218 DCM6605. DCM6606. and DCE6661; max. 1

DCE6661 Performance and Line Configurability Enhancement; increases processor 648 606 535 16.512 113 "\ performance to Mid-Performance Level; increases line configurability to a maximum of 64 lines; requires DCM6605 /' DCE6662 Cache Memory Performance Enhancement; increases processor performance 1.264 1.173 1.037 37.300 65 to High-Performance Level; requires DCM6605 and DCE6661 DCE6663 Line Configurability Enhancement; increases line configurability to a 143 137 129 4,443 0 maximum of 96 lines; requires DCM6605 and DCE6661

DCF6601 Peripheral Interface Adapter; max. 2 256 239 219 7.070 36 DCF6602 Second Direct Interface Adapter; max. 1 238 231 219 7.070 36 DCF6607 Channel Interface Base; max. 12 60 56 50 1.651 9

Channel Interface Options- DCF6610 20 mA Current Loop 40 38 33 1.180 4 DCF6611 Synchronous RS-232-C 52 48 43 1,450 7 DCF6612 Asynchronous RS-232-C 22 21 19 590 4 DCF6613 Automatic Call Unit 35 34 33 1.180 4 DCF6614 Synchronous MIL STD 188-C 48 47 45 1.501 8 DCF6615 Asynchronous MIL STD 188-C 48 47 45 1.501 8 DCF6616 Broadband MIL STD 188-C 48 47 45 1.501 8 ·DCF6617 HDLC MIL STD 188-C 79 77 74 2.573 11 DCF6618 Bisynchronous 52 48 43 1,450 7 DCF6619 Broadband 107 100 89 3.056 12 DCF6620 HDLC Voice Grade 79 77 74 2.573 11 DCF6621 Bisynchronous Broadband 107 100 89 3.056 12 DCF6622 HDLC Broadband 92 91 86 3.056 12 DCF6623 HDLC CCITT-V.35 103 100 94 3,430 12 DCF6627 Broadband CCITT-V.35 103 100 94 3,430 12

DCF6626 Asynchronous or Synchronous Direct Connect Capability 10 10 il 350 1 DCF6927 Universal Mode Bypass 28 28 22 415 11

SOFTWARE

Monthly Optional Charge Support Service

Network Processing Supervisor (NPS) $847 $209 NPS HDLC Option 97 11 Remote Terminal Supervisor-II (GRTS-II) 206 44 GRTS-II HDLC Option 97 11 Multics Communication System (MCS) 605"

'Includes prime-shift maintenance. "Includes Support Service .•