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Sound: ECMOF

[BBC Micro disc version, Flight]

Name: ECMOF [Show more] Type: Subroutine Category: Sound Summary: Switch off the E.C.M.
Context: See this subroutine in context in the source code Variations: See code variations for this subroutine in the different versions References: This subroutine is called as follows: * Main flight loop (Part 16 of 16) calls ECMOF * RES2 calls ECMOF

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 ECMP 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)