Jméno
SI — select in-out unit/stop
Popis
Stop any in-out unit that may be running. Select a particular in-out unit and start it operating in a specified mode, deignated by the digits p q r; or, stop the computer. Si 0 will stop the computer; si 1 will stop the computer only if the "Conditional Stop" switch is ON. A program alarm may occur if the computer is not ready to receive information trasmitted to it from selected in-out unit (e.g., the use of an si address if si selects Magnetic Tape, or PETR without the necassary rd instruction following). Also an inactivity alarm may result when using an rc or bo with an si instruction which selects the read mode.
Odkazy
Podobné instrukce:
FIXME:whirlwind.isa.halt;.
