Clock profile switcher for timing-sensitive software and test harnesses, enabling controlled transitions between true legacy rates and turbo operation.

Profiles

4.77MHz, 8MHz, 12MHz, board turbo

Switching Logic

Debounced hardware line with deterministic latch state

Feedback

Status LED map plus software verification hooks

Compatibility

AT clones, 386SX, selected 486DX boards

Use Cases

Cycle-sensitive DOS software and diagnostics harnesses

Field Harness

Front-panel and relay control compatible