Editing AT&T Computer Systems (section)

==Servers==
On the large side, the 3B4000 (1986) was the first "snugly coupled" multiprocessor (the "network in a box"), containing the A-BUS which supported 16 large [[single-board computer]] (SBC) circuit panels, and featured the first SVR4 distributed UNIX kernel (codenamed "Apache", nothing to do with the open source project started in the 1990s). Although the SBCs did not share address space, the UNIX kernel was distributed across all SBCs in a single virtual image. 

The StarServer E ("Enterprise" or SSE) was an [[Intel]]-based [[Symmetric multiprocessing|symmetric multiprocessor]] (SMP), introduced just after the Sequent system, making the SSE the world's second SMP UNIX system, and the first to run System V.4. It featured 4 Intel [[i486]] CPUs. A later design (codenamed "Bigfoot") was to feature 10 [[Pentium (original)|Pentium]] CPUs, but this was never released because of the [[NCR Voyix|NCR]] deal.

AT&T-CS also introduced the world's first "PC&C" (personal computer and communication), the famous AT&T Safari laptop, the first to have a built-in modem and networking. This system used an Intel [[x86]] microprocessor, and ran [[Microsoft]] software instead of Unix. AT&T-CS also marketed a line of desktop PCs, first using [[Olivetti]] as an OEM, later designing its own product line (codename Cascade) using OEM mainboards from Intel.

Other innovative designs which were never released included the "Starburst", a distributed Unix kernel message-passing multiprocessor with a fiber-optic switching core, and "Intercept", a unique High-Availability multiprocessor.