* * Simple program to get the LED blinking on a BOTBoard 2 * Tom Dickens 8/16/1998 * * Assumes an 'E1 or 'A1 device. * Change $B600 to $F800 for 'E2 * ORG $B600 * * set up port D for controlled output * ldaa #$07 staa $1028 ; disable SPI and not wired-OR mode ldaa #$08 staa $1009 ; data direction for port D * * The Loop * Top: ldaa #$08 staa $1008 ; Turn LED on bsr Delay ldaa #$00 staa $1008 ; Turn LED off bsr Delay bra Top Delay: pshx ldx #$0000 LoopX: dex bne LoopX pulx rts