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⌂ ∞ Elite on the BBC Micro

Dashboard: ECBLB2

[BBC Micro cassette version]

       Name: ECBLB2                                                  [Show more]
       Type: Subroutine
   Category: Dashboard
    Summary: Start up the E.C.M. (indicator, start countdown and make sound)

    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 3 of 16) calls ECBLB2
             * TACTICS (Part 1 of 7) calls ECBLB2




 Light up the E.C.M. indicator bulb on the dashboard, set the E.C.M. countdown
 timer to 32, and start making the E.C.M. sound.



.ECBLB2

 LDA #32                \ Set the E.C.M. countdown timer in ECMA to 32
 STA ECMA

 ASL A                  \ Call the NOISE routine with A = 64 to make the sound
 JSR NOISE              \ of the E.C.M. being switched on

                        \ Fall through into ECBLB to light up the E.C.M. bulb