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Showing posts from March, 2017

Translators, maps, conduits, and containers

Interpreters
The Amiga had a hardware emulator which transformed instruction to instruction to a dedicated x86 hardware interpreter in the Amiga could run Microsoft DOS spreadsheet programs in the Amiga OS.

MS-DOS on Amiga via Sidecar or Bridgeboard[edit]
MS-DOS compatibility was a major issue during the early years of the Amiga's lifespan in order to promote the machine as a serious business machine. In order to run the MS-DOS operating system, Commodore released the Sidecar for the Amiga 1000, basically a 8088 board in a closed case that connected to the side of the Amiga. Clever programming (a library named Janus, after the two-faced Roman god of doorways) made it possible to run PC software in an Amiga window without use of emulation. At the introduction of the Sidecar the crowd was stunned to see the MS-DOS version of Microsoft Flight Simulator running at full speed in an Amiga window on the Workbench.

Later the Sidecar was implemented on an expansion card named "Bridgebo…