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BBC Micro Elite

Dashboard: SPBLB

Name: SPBLB [View in context] Type: Subroutine Category: Dashboard Summary: Light up the space station indicator ("S") on the dashboard
This draws (or erases) the space station indicator bulb ("S") on the dashboard. Other entry points: BULB-2 Set the Y screen address
.SPBLB LDA #24*8 \ The space station bulb is in character block number 24 \ with each character taking 8 bytes, so this sets the \ low byte of the screen address of the character block \ we want to draw to LDX #LO(SPBT) \ Set (Y X) to point to the character definition in SPBT LDY #HI(SPBT)