page_title: XKL
section_title: TOAD-1
hierarchical_section_title: XKL / Products / TOAD-1
caption_attribution_description: English: Full view of the XKL TOAD-2 on display at the Living Computer Museum in Seattle, Washington.
context_page_description: Based in Redmond, Washington XKL, LLC, is an American company that develops optical transport technologies. Founded in 1991, XKL is led by Cisco Systems co-founder Len Bosack who also used to work for DEC and Bell Labs. Under Bosack, Cisco commercialized local area network technology to connect geographically to computers over a multiprotocol router system.
context_section_description: The TOAD-1 System, also known as TD-1, was announced in 1993 and built as an extended version of the DECSYSTEM-20 from Digital Equipment Corporation. The original inspiration was to build a desktop version of the popular PDP-10 and the name began as an acronym for "Ten On A Desk". It was eventually built at XKL by veteran engineers from Cisco, DEC, Hewlett-Packard, and CDC.
  It was the first XKL product produced and it became available for purchase in late 1995. The TOAD-1 is a high-performance I/O oriented system with a 36-bit processor running TOPS-20. It is a 36-bit multi-user system that can provide service to over 100 users at a time. The TOAD-1 architecture incorporated modern peripherals, and open bus architecture, expanded physical and virtual memory while maintaining the TOPS-20 user environment.
caption: Full view of the XKL TOAD-2 on display at the Living Computer Museum in Seattle, Washington.
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