yann64andClaude Opus 5.5
b274874139
1,289 discussions, 9,527 archived comments; pages no longer carry the comments themselves. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01YDRjtmAiNpo5mK5N3d7QwZ
104 lines
3.7 KiB
Markdown
104 lines
3.7 KiB
Markdown
---
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title: ATT Unix PC
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categories:
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- Computers
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types:
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- Professional Computer
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origins:
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- U.S.A.
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years:
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- '1985'
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cpus:
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- Motorola MC68010
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params:
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name: Unix PC
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image: /media/museum/photos/att_unixpc_system_s1.jpg
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company: /companies/att
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company_name: ATT
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specs:
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- label: NAME
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value: Unix PC
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- label: MANUFACTURER
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value: ATT
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- label: TYPE
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value: Professional Computer
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- label: ORIGIN
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value: U.S.A.
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- label: YEAR
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value: '1985'
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- label: BUILT IN LANGUAGE
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value: Bourne Shell Scripting, C and ASM with optional Software
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- label: KEYBOARD
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value: Detachable 103-key QWERTY
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- label: CPU
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value: Motorola MC68010 (16 bit external bus, 32bit internal) with custom MMU
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- label: SPEED
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value: 10 MHz
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- label: CO-PROCESSOR
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value: Custom Gate Arrays for DMA (3), 8088 (86?) on optional DOS-73
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- label: RAM
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value: 512 KB / 1 MB / 2 MB / 4 MB
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- label: ROM
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value: 16 KB EPROM holding Boot Strap, Diagnostics etc.
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- label: TEXT MODES
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value: 80 columns x 29 rows
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- label: GRAPHIC MODES
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value: 348 x 720 on built-in 12'' Monitor
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- label: COLORS
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value: Green On Black Monochrome
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- label: SOUND
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value: Beeper
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- label: I/O PORTS
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value: Centronics, RS-232c, Tip/Ring Line Modular Phone Jacks (2), RJ11 Phone Jack (1). Internal Expansion Slot (3), Internal 300/1200 bps modem
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- label: BUILT IN MEDIA
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value: 10 or 20mb hard drive then later 40 and 67mb hard drive. 5 1/4
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- label: OS
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value: AT&T Unix v3.51, Unix based on System V r2 with extensions from BSD 4.1, BSD 4.2, SysV r3 and Convergent Technologies
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- label: POWER SUPPLY
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value: Built-in PSU
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- label: PERIPHERALS
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value: |-
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Three button optomachanical mouse\
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Ethernet\
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DOS-73 board, 512kb RAM board, 2mb RAM board, Dual EIA Port board\
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EIA/RAM Combo board\
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23 MB Tape Drive
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- label: PRICE
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value: |-
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$5590 for 10mb HDD, 512Kb RAM and Unix\
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$6590 for 20mb HDD, 1mb RAM and Unix\
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$1195 for 512kb expansion card
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tabs:
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- links
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forum_thread: 1134
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links:
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- title: AT&T 7300/3b1 (UNIXPC) Stuff
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url: http://www.unixpc.org/
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text: ''
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- title: Unix PC Archive Holdings
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url: http://unixpc.taronga.com/
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text: ''
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oc_id: 1164
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source:
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url: https://web.archive.org/web/20230328011733/http://www.old-computers.com/museum/computer.asp?c=1164
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date: '2023-03-28'
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---
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The AT&T UnixPC was AT&T's attempt to get into the business computer market of the mid-1980s. There were two flavors of this machine: the **7300**, and the **3B1**. Basically the circuitry is identical in both machines however the 3B1 allowed more room for hard-drive storage, as shown with the ominous bulge underneath the screen. (not shown in model above).
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The windowing manager was absolutely wonderful keeping the UNIX system well hidden, however, you could naturally open a shell and interface directly. The graphics system was neat as well - there is a 3D bitmap demo online somewhere.
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These computers could support 3 terminals with an add-on card for concurrent use by up to 4 users (one at he console, one on the built-in port, and one each on the two add-on ports).
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The keyboard could be "nested" on the shelf in front of the floppy drive. The sound was limited to beeps.
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There was also an add-on board with a speech synthesizer which could turn the UnixPC into a full-fleged voicemail management system.
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An absolutely wonderful and advanced computer for it's time, which can still teach modern computers a lesson in innovation.
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---
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**Contributors:** Domenic Schipani, Gary Clouse
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<table> <tr> <td></td> <td>We need more info about this computer ! If you designed, used, or have more info about this system, please send us pictures or anything you might find useful.</td> <td></td> </tr> </table>
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