Prev: C00C Up: Map Next: C040
C03B: Check Input Port
Used by the routine at SaveDisplayState.
Reads port FB keeps bit 6 and returns.
CheckInputPort C03B DEFB $DB,$FB,$E6,$40 Read port FB keep bit 6.
C03F DEFB $C9 Return.
Prev: C00C Up: Map Next: C040