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authorthing1 <thing1@seacrossedlovers.xyz>2024-10-07 13:01:30 +0100
committerthing1 <thing1@seacrossedlovers.xyz>2024-10-07 13:01:30 +0100
commit3564e513623bb3fc4d528d3d29df9aa91dae1396 (patch)
tree17d60d15b9c21db957ef966fc3eb763fd11fd244 /electronics/asm/3.asm
parentce61e41c6a14b84808aceb37d5118f23e3affaa0 (diff)
did some electronics and comp sci work
Diffstat (limited to 'electronics/asm/3.asm')
-rw-r--r--electronics/asm/3.asm31
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