Only turn on the column shift register output if we need it.

diff --git a/ROM2/motors.c b/ROM2/motors.c
index a114490..ba91ec9 100644 (file)
--- a/ROM2/motors.c
+++ b/ROM2/motors.c
@@ -55,13 +55,13 @@ void motor_on(u8 slot) {
                        break;
                default: /* < 8 */
                        motor_shift_send(1 << col); /* cols from 0..7 */
+                       bclr((void*)&_io_ports[M6811_PORTA], PORTA_MOTOR_COL_DISABLE);
        }
 
        motor_shift_send(1 << (row-1)); /* rows from 1..8 here */
 
        bclr((void*)&_io_ports[M6811_PORTA], PORTA_MOTOR_CLOCK);
        bclr_changer_output(A3000_MOTOR_ROW_DISABLE);
-       bclr((void*)&_io_ports[M6811_PORTA], PORTA_MOTOR_COL_DISABLE);
 }
 
 void motors_off() {