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Intel acquired German embedded-tools company CAD-UL in 2001 to build development tools for its XScale processor family. CAD-UL’s tools are now discontinued: Intel said in support responses in 2022 and 2023 that it no longer had the software or documentation to provide. That means there is no current official Intel download or support path for CAD-UL Workbench, XDB, or the related compiler and debugger.
Why did Intel buy CAD-UL?
On March 5, 2001, EE Times reported that Intel had acquired privately held CAD-UL for an undisclosed amount. Intel’s stated aim was “to build an optimised toolset for the Xscale processor family.” The deal aligned CAD-UL’s embedded-development expertise with Intel’s XScale processor strategy.
CAD-UL was not a semiconductor manufacturer. It developed software used to create and debug programs for embedded systems. Its engineering and sales staff became Intel employees. A separate circuit-board design and manufacturing operation was spun out as CAD-UL Electronic Services GmbH.
What did CAD-UL make?
CAD-UL sold embedded-development tools, including compilers and debuggers for protected-mode x86 devices. EE Times named Nokia and Siemens among its customers and reported that existing support and maintenance contracts would be honored after the acquisition.
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A later Intel support discussion lists the legacy toolchain’s components:
- Assembler
- ANSI C and C++ compilers
- ROMable converter
- Librarian and linker
- Object-file checker
- Debug preprocessor and debugger
CAD-UL Workbench was associated with Intel XScale. XDB was part of the historical toolset, but neither name should be mistaken for a currently maintained Intel product.
Can you still download CAD-UL Workbench or XDB?
Intel’s current support record does not offer a download. In a July 2022 response, Intel staff said CAD-UL support had not been available for more than ten years, that Workbench was tied to XScale, and that Intel had discontinued XScale products. The response also said Intel had no documents or software to provide. A separate Intel response in 2023 likewise described the toolchain as discontinued and said the company no longer had access to its related software or documentation.
These statements establish that Intel’s support channels cannot supply the original tools or manuals; they do not establish whether a third-party archive or an existing customer’s copy survives. Any such copy would need to be assessed independently for authenticity, license rights, and compatibility. Intel’s 2022 and 2023 replies are available in its Workbench manuals discussion and compiler and debugger discussion.
Is CAD-UL XDB still supported?
No current official support is established. Intel’s statements concern the discontinued CAD-UL toolchain broadly and say that its support, software, and documentation are no longer available from Intel. They do not identify a maintained successor for XDB or provide a replacement-product matrix.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What should you do with a legacy CAD-UL project?
If you need to recover or continue an old embedded project, treat the compiler, debugger, project files, and target hardware as one compatibility problem. A surviving executable alone may not be enough to rebuild the application, while obtaining a tool copy does not automatically grant permission to use it.
- Inventory what you have: preserve installers, license files or dongles, project sources, build settings, generated binaries, manuals, and any known-good host machine. Keep untouched copies before experimenting.
- Check rights and provenance: establish whether a license covers the copy and the intended use. Do not assume an archived download is authorized or complete.
- Verify host compatibility: determine whether the tool runs on the available operating system and whether any required legacy environment can be maintained safely.
- Verify the target: confirm that the original processor and hardware are available and that the compiler and debugger support the project’s specific target configuration.
- Plan a migration only after a baseline: if rebuilding is necessary, first capture the existing behavior and interfaces. A modern toolchain may require source changes and does not guarantee binary or hardware compatibility with an XScale-era target.
Intel’s discontinuation notices do not establish which alternatives can build a particular project. Choose a path only after checking binary availability, license status, operating-system compatibility, target-processor support, documentation, and whether help comes from an official vendor or an unaffiliated community.
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