Diff: myAss.S

Revision:

0:77c6d064a44f

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/myAss.S	Mon Nov 15 06:10:23 2021 +0000
@@ -0,0 +1,26 @@
+                    AREA myAss, CODE, READONLY 
+                    GLOBAL compare 
+     
+                    ; bool compare(uint32_t *, uint16_t *) 
+compare              LDR R2,[R0]; screen section
+                     LDRH R3,[R1]; Y position   
+                     
+                       
+        MOV R1, #106; 1/3 of y length of screen
+        MUL R2, R1, R2
+        
+        CMP R3, R2 ; return true if screen section is withing the 1/3 of the screen selected.
+        
+        MOV R0, #1
+        MOVGE R0, #0
+        SUB R2, R2, R1
+        CMP R3, R2
+        MOVLE R0, #0
+                     
+                     
+                     
+                     
+                     BX LR 
+                    
+                    
+                    END
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