summaryrefslogtreecommitdiff
path: root/electronics/asm/2.asm
diff options
context:
space:
mode:
Diffstat (limited to 'electronics/asm/2.asm')
-rw-r--r--electronics/asm/2.asm23
1 files changed, 23 insertions, 0 deletions
diff --git a/electronics/asm/2.asm b/electronics/asm/2.asm
new file mode 100644
index 0000000..2dafe9e
--- /dev/null
+++ b/electronics/asm/2.asm
@@ -0,0 +1,23 @@
+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:
+ movlw b'00000111'
+ movwf PORTB
+ call wait1000ms
+
+ movlw b'11100000'
+ movwf PORTB
+ call wait1000ms
+
+ goto main
+ END ; ends the program