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Dashboard: ECBLB

[Acorn Electron version]

Name: ECBLB [Show more] Type: Subroutine Category: Dashboard Summary: Light up the E.C.M. indicator bulb ("E") on the dashboard
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: * ECMOF calls ECBLB
.ECBLB LDA #&98 \ Set A to the low byte of the screen address of the \ E.C.M. bulb (which is at &7C98) LDX #LO(ECBT) \ Set X to the low byte of the address of the character \ definition in ECBT LDY #&7C \ Set Y to the high byte of the screen address of the \ E.C.M. bulb (which is at &7C98) BNE BULB \ Jump down to BULB (this BNE is effectively a JMP as \ A will never be zero)