diff options
Diffstat (limited to 'electronics/asm/3.asm')
| -rw-r--r-- | electronics/asm/3.asm | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/electronics/asm/3.asm b/electronics/asm/3.asm new file mode 100644 index 0000000..9182e8d --- /dev/null +++ b/electronics/asm/3.asm @@ -0,0 +1,31 @@ +start: +init: + clrf PORTA ; make sure port A output latches are low + clrf PORTB ; make sure port B output latches are low + bsf STATUS,RP0 ; select memory bank 1 + movlw b'11111111' ; set port A data direction to inputs + movwf TRISA + movlw b'00000000' ; set port B data direction to outputs + movwf TRISB + bcf STATUS,RP0 ; select memory bank 0 + goto main + +main: + btfsc PORTA, 0 + goto flashled + goto main + +flashled: + movlw b'11111111' + movwf PORTB + call wait1000ms + call wait1000ms + movlw b'00000000' + movwf PORTB + call wait1000ms + + btfsc PORTA, 0 + goto flashled + goto main + + END ; ends the program |