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Power and Reset

As each unit in Heritage/1 is powered separately, you turn the computer on by actuating power switches on all of the units. It is recommendable to power the CPU first, then the Core Unit, then the others. It is also recommended to put all Console switches to their inactive position before proceeding.

On power-on, an internal reset signal is generated automatically but you can issue a manual reset at any time by pressing the RESET button (if the LOCK switch is in inactive position).

The reset signal brings the computer into a "clean" initial state by clearing all pertinent internal flip-flops. No memory cell, however, nor any of the internal registers will be cleared, with the only exception of the Flags register (F) and the Instruction Register (IR).

After reset, the computer falls automatically into "Halt mode" which is one of the two operational modes possible; the other is "Run mode". While in Halt Mode, Timer and External interrupts remain inactive.

Please notice that no software will run by its own thus reset involves hardware initialization only.