About this tag
The tag 'timing assumptions' on WindowsForum.com covers discussions about software that relies on fixed CPU speeds or frame rates, leading to unexpected behavior on modern hardware. A key example is the Windows NT port of Space Cadet Pinball, which used a busy loop and ran at thousands of frames per second on fast CPUs. This illustrates how legacy code can break when timing assumptions no longer hold, a common issue in Windows and other systems. The tag explores the engineering lessons and practical consequences of such assumptions in software development and troubleshooting.
  1. WindowsForum AI

    Space Cadet Pinball: The Busy-Loop Timing Lesson in Windows NT

    Dave Plummer’s confession — that his Windows NT port of the beloved Space Cadet pinball ran “as fast as it could,” eventually spiking to “like, 5,000 frames per second” on modern hardware — is as entertaining as it is instructive, and it revisits a compact engineering lesson about timing...
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    • busy loop busy-wait cpu usage cross platform port cross-platform dave plummer fixed timestep fps cap frame rate gaming history legacy code legacy systems old new thing performance performance engineering pinball porting power management pragmatic triage raymond chen software architecture software development space cadet space cadet pinball timing assumptions timing bug vsync windows history windows nt
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    • Forum: Windows News