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BBC Micro Elite

Sound: ECMOF

Name: ECMOF [View in context] Type: Subroutine Category: Sound Summary: Switch off the E.C.M.
Switch the E.C.M. off, turn off the dashboard bulb and make the sound of the E.C.M. switching off).
.ECMOF LDA #0 \ Set ECMA and ECMB to 0 to indicate that no E.C.M. is STA ECMA \ currently running STA ECMP JSR ECBLB \ Update the E.C.M. indicator bulb on the dashboard LDA #72 \ Call the NOISE routine with A = 72 to make the sound BNE NOISE \ of the E.C.M. being turned off and return from the \ subroutine using a tail call (this BNE is effectively \ a JMP as A will never be zero)