Editing Disassembler (section)

== Disassemblers and emulators==
A dynamic disassembler can be integrated into the output of an [[emulator]] or [[hypervisor]] to trace the real-time execution of machine instructions, displaying them line-by-line. In this setup, along with the disassembled machine code, the disassembler can show changes to registers, data, or other state elements (such as condition codes) caused by each instructions. This provides powerful debugging information for problem resolution. However, the output size can become quite large, particularly if the tracing is active throughout the entire execution of a program. These features were first introduced in the early 1970s by OLIVER as part of its [[CICS]] debugging product and are now incorporated into the [[XPEDITER]] product from [[Compuware]].