The AT&T UNIX PC is a Unixdesktop computer originally developed by Convergent Technologies[2] (later acquired by Unisys),[5][1] and marketed by AT&T Information Systems in the mid- to late-1980s. The system was codenamed "Safari 4"[6] and is also known as the PC 7300, and often dubbed the "3B1". Despite the latter name, the system had little in common with AT&T's line of 3B series computers. The system was tailored for use as a productivity tool in office environments and as an electronic communication center.[7]
The initial PC 7300 model offered a modest 512 KB[2] of memory and a small, low performance 10 MB hard drive.[3] This model, although progressive in offering a Unix system for desktop office operation, was underpowered and produced considerable fan and drive bearing noise even when idling. The modern-looking "wedge" design by Mike Nuttall was innovative, and the machine gained notoriety appearing in numerous movies and TV shows as the token "computer".[8]
AT&T 3B/1
An enhanced model, "3B/1", was introduced in October 1985 starting at US$8,495 (equivalent to $21,400 in 2021).[9][1] The cover was redesigned to accommodate a full-height 67 MB hard drive.[1] This cover change added a 'hump' to the case, expanded onboard memory to 1 or 2 MB, as well as added a better power supply.[1]
S/50
Convergent Technologies offered an S/50 which was a re-badged PC 7300.[10]
The operating system is based on Unix System V Release 2,[2] with extensions from 4.1 and 4.2 BSD, System V Release 3 and Convergent Technologies.[1] The last release was 3.51.[1]
The UNIX PC has three proprietary S4BUS slots for expansion cards:
DOS-73 8086co-processor card running at 8 MHz, Hercules graphics-compatible, with 512 KB RAM, an RS-232 COM2 port and optional 8087 math co-processor. Mouse, floppy, modem (on COM1), and printer are shared in a DOS session. MS-DOS 3.1 was included. This board was designed and built for AT&T by Alloy Computer Products of Framingham, MA.
RAM could be added using 512 KB RAM or 2 MB RAM cards, up to a maximum of 4 MB (2 MB on the motherboard and 2 MB on expansion cards).
EIA/RAM combo cards contained extra RAM (512 KB, 1 MB, or 1.5 MB) and two RS-232 serial ports.
Dual EIA port card (same card as the EIA/RAM but without the RAM sockets)
StarLAN 1 Mbit/s (1BASE5) network over twisted-pair wire local area network typically used in star format
AUDIX Voice Power (“Speech Processor”) card allowed for the capture and digital recording of voice conversations. This was an option of the "Integrated Solution" package for the AT&T System 25PBX where the UNIX PC served as the "Master Controller".[17]
PC/PBX Connection Package 4 for AT&T PBX System 75 or System 85
Expansion chassis card was hard-wired to the externally-powered Expansion Unit with five additional S4BUS slots (manufactured by Alloy Computer Products)
^ abcdefghijklmnMayer, Alastair J. W. "System Review: The AT&T UNIX PC" (PDF). Byte. No. May 1986. pp. 254–262. Retrieved 2019-08-01.
^ abcdefghijklmnHowitt, Doran (1984-04-08). "At Last, AT&T's 7300/Unix PC". Infoworld. p. 17. Retrieved 2019-08-01.
^"AT&T Introduces Computer Gear Aimed at IBM-Led Office Market".
^CBR Staff Writer (December 13, 1988). "UNISYS Corp Puts Ely in Charge of $2,000m UNIX Group". Tech Monitor. New Statesman Media Group Ltd. Retrieved November 29, 2021.
^"NEW AT&T COMPUTER OFFICE GEAR". Chicago Tribune. March 27, 1985.
^AT&T, Select Code 999-601-311IS, AT&T UNIX PC Owner's Manual (1986)
unix, unix, desktop, computer, originally, developed, convergent, technologies, later, acquired, unisys, marketed, information, systems, late, 1980s, system, codenamed, safari, also, known, 7300, often, dubbed, despite, latter, name, system, little, common, wi. The AT amp T UNIX PC is a Unix desktop computer originally developed by Convergent Technologies 2 later acquired by Unisys 5 1 and marketed by AT amp T Information Systems in the mid to late 1980s The system was codenamed Safari 4 6 and is also known as the PC 7300 and often dubbed the 3B1 Despite the latter name the system had little in common with AT amp T s line of 3B series computers The system was tailored for use as a productivity tool in office environments and as an electronic communication center 7 UNIX PC PC 7300 3B1 1 AT amp T UNIX PCManufacturerConvergent Technologies 2 TypeProfessional ComputerRelease dateMarch 26 1985 1985 03 26 3 Introductory priceUS 5 095 equivalent to 12 800 in 2021 US 7 290 equivalent to 18 400 in 2021 3 4 Media5 inch floppy disks optional QIC tapesOperating systemAT amp T UNIX v3 51 1 Based on SVR2 CPUMotorola 68010 with custom MMU clocked at 10 MHzMemory512 KB to 4 MB RAMStorage10 MB Optional 20 MB 40 MB 2 and 67 MB hard drives 1 Display12 inches 30 cm 720 x 348InputKeyboard 3 button MouseConnectivityRS 232 port Parallel port 3 phone jacksMass40 lb 18 kg Contents 1 Hardware configuration 1 1 PC 7300 1 2 AT amp T 3B 1 1 3 S 50 1 4 Olivetti AT amp T 3B1 2 Operating system 3 Programming languages 4 Application software 4 1 Spreadsheet software 4 2 Word processors 4 3 Games 4 4 Utility 5 Expansion cards 6 Public domain software 7 Emulation 8 Cancelled successor 9 See also 10 References 11 External linksHardware configuration Edit Exterior of the AT amp T 3B1 Motorola 68010 in an AT amp T 7300 UNIX PC 10 MHz Motorola 68010 16 bit external bus 32 bit internal with custom discrete MMU 2 Internal MFM hard drive originally 10 MB 3 later models with up to 67 MB 1 Internal 5 1 4 floppy drive 2 At least 512 KB RAM on main board 1 MB or 2 MB were also options expandable up to an additional 2 MB via expansion cards 4 MB max total 2 32 KB VRAM 16 KB ROM up to 32 KB ROM supported using 2x 27128 EPROMs 2 KB SRAM for MMU page table Monochrome green phosphor 12 inch 300 mm monitor 2 Internal 300 1200 bit s modem 2 RS 232 serial port 2 Centronics parallel port 2 3 S4BUS expansion slots 2 3 phone jacks 2 PC 7300 Edit The initial PC 7300 model offered a modest 512 KB 2 of memory and a small low performance 10 MB hard drive 3 This model although progressive in offering a Unix system for desktop office operation was underpowered and produced considerable fan and drive bearing noise even when idling The modern looking wedge design by Mike Nuttall was innovative and the machine gained notoriety appearing in numerous movies and TV shows as the token computer 8 AT amp T 3B 1 Edit An enhanced model 3B 1 was introduced in October 1985 starting at US 8 495 equivalent to 21 400 in 2021 9 1 The cover was redesigned to accommodate a full height 67 MB hard drive 1 This cover change added a hump to the case expanded onboard memory to 1 or 2 MB as well as added a better power supply 1 S 50 Edit Convergent Technologies offered an S 50 which was a re badged PC 7300 10 Olivetti AT amp T 3B1 Edit British Olivetti released the Olivetti AT amp T 3B1 Computer in Europe 11 Operating system Edit source source source source source source Video of an AT amp T PC 7300 booting AT amp T PC 7300 compiling and running a C program The operating system is based on Unix System V Release 2 2 with extensions from 4 1 and 4 2 BSD System V Release 3 and Convergent Technologies 1 The last release was 3 51 1 Programming languages EditAT amp T BASIC 1 dBase III 3 GNU C LISP LPI C 3 1 LPI COBOL 3 LPI DEBUG debugger LPI Fortran 3 1 LPI Pascal 3 1 LPI PL I 3 Microsoft BASIC 1 3 RM COBOL 1 RM Fortran 1 SMC BASIC 1 SVS Fortran 1 SVS Pascal 1 Application software EditBusiness Graphics produces chart graphics from 20 20 spreadsheet data dBASE III DBM 3 Informix DBM Oracle DBM Paint Power drawing package Samna AT amp T Write Power 2 word processor spreadsheet Samna Plus word processor spreadsheet 12 SMART System Office Suite Sound Presentations presentation graphics 13 Spreadsheet software Edit 20 20 Supercomp 20 13 Microsoft Multiplan 13 3 Word processors Edit AT amp T Word Processor 13 1 Crystal Writer 1 Microsoft Word 13 3 1 Samna Word 1 SMART Word Processor 1 WordMarc 1 WordStar 2000 1 Games Edit Chess Klondike 14 Life Mahjongg 15 Larn Moria NetHack Pac Man clone Robots Rocks Asteroids clone Super Rogue 9 0 Tetris cloneUtility Edit EMACS HoneyDanBer UUCP package KA9Q implements SLIP built in FTP telnet SMTP finger which are otherwise not available without installing the Ethernet software Kermit MGR window system Pcomm ProComm clone SPICE NUTMEG circuit simulation tool 16 TeX Various Shells Bourne C and KornExpansion cards EditThe UNIX PC has three proprietary S4BUS slots for expansion cards DOS 73 8086 co processor card running at 8 MHz Hercules graphics compatible with 512 KB RAM an RS 232 COM2 port and optional 8087 math co processor Mouse floppy modem on COM1 and printer are shared in a DOS session MS DOS 3 1 was included This board was designed and built for AT amp T by Alloy Computer Products of Framingham MA RAM could be added using 512 KB RAM or 2 MB RAM cards up to a maximum of 4 MB 2 MB on the motherboard and 2 MB on expansion cards EIA RAM combo cards contained extra RAM 512 KB 1 MB or 1 5 MB and two RS 232 serial ports Dual EIA port card same card as the EIA RAM but without the RAM sockets StarLAN 1 Mbit s 1BASE5 network over twisted pair wire local area network typically used in star format Ethernet 10 Mbit s LAN card AMD Lance based using AUI connector and Wollongong TCP IP stack drivers AUDIX Voice Power Speech Processor card allowed for the capture and digital recording of voice conversations This was an option of the Integrated Solution package for the AT amp T System 25 PBX where the UNIX PC served as the Master Controller 17 PC PBX Connection Package 4 for AT amp T PBX System 75 or System 85 Floppy Tape card provided interface for 23 MB MFM Tape Cartridge Drive e g Cipher FloppyTape 525 QIC 02 card for tape backup Expansion chassis card was hard wired to the externally powered Expansion Unit with five additional S4BUS slots manufactured by Alloy Computer Products Piiceon Model SR 2048 2 MB RAM expansion cardPublic domain software EditThe STORE was a public domain software repository provided by AT amp T and accessible via dialup UUCP 1 18 Emulation EditThe FreeBee emulator is available at FreeBee on GitHub Cancelled successor EditThree prototypes of a follow on P6 model were alleged to have been built 19 1 with the specifications claimed to be Motorola 68020 Optional Motorola 68881 FPU SIMM sockets for up to 16 MB RAM Color monitor 2400 baud modem 60 MB QIC tapeSee also EditAT amp T 6300 Plus Convergent Technologies DEC Professional IBM RT PC IBM System 9000References Edit a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac 3b1 FAQ unixpc org Retrieved 1 August 2019 a b c d e f g h i j k l m n Mayer Alastair J W System Review The AT amp T UNIX PC PDF Byte No May 1986 pp 254 262 Retrieved 2019 08 01 a b c d e f g h i j k l m n Howitt Doran 1984 04 08 At Last AT amp T s 7300 Unix PC Infoworld p 17 Retrieved 2019 08 01 AT amp T Introduces Computer Gear Aimed at IBM Led Office Market CBR Staff Writer December 13 1988 UNISYS Corp Puts Ely in Charge of 2 000m UNIX Group Tech Monitor New Statesman Media Group Ltd Retrieved November 29 2021 NEW AT amp T COMPUTER OFFICE GEAR Chicago Tribune March 27 1985 AT amp T Select Code 999 601 311IS AT amp T UNIX PC Owner s Manual 1986 AT amp T PC 7300 Starring the Computer Petrosky Mary October 14 1985 6300 Plus Launched By AT amp T InfoWorld Vol 7 no 41 p 8 Vendors of Multiuser Microcomputer Products Infoworld 1986 10 13 Olivetti Technical Specifications Olivetti Samna Plans Unix based Product Line InfoWorld June 16 1986 p 17 a b c d e Satchell Stephen 1985 09 23 A Look at Software for AT amp T s Unix PC Infoworld pp 32 33 Retrieved 2019 07 30 Games Comp sources 3b1 Archive Volume 1 Miscellaneous Software AT amp T System 25 Reference Manual September 1989 The STORE SVR3 5 source code External links EditAT amp T Leapfrogs IBM With the Unix PC InfoWorld April 15 1985 pp 15 17 The AT amp T Unix PC article from BYTE magazine Volume 10 Number 05 Multiprocessing May 1985 pp 98 106 The AT amp T Unix PC Review article from BYTE magazine Volume 11 Number 05 Multiprocessing May 1986 pp 254 262 comp sys 3b1 FAQ AT amp T 3B1 7300 UNIX PC Information AT amp T UNIX PC at old computers com http bitsavers trailing edge com pdf att 3b1 http www unixpc org Retrieved from https en wikipedia org w index php title AT 26T UNIX PC amp oldid 1136198715, wikipedia, wiki, book, books, library,
