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--- notes:comporg:spring2025:projects:mtb3 [2025/03/21 18:26] – [manifestation in memory] cgrant9
+++ notes:comporg:spring2025:projects:mtb3 [2025/04/03 04:11] (current) – [logic for accessing] bdildine
@@ Line 22: / Line 22: @@
 </code>
 ====logic for accessing====
+If you gave each attribute of the brick its own memory address (for example active flag, xpos, ypos) we can access them by going back to that address.
+If you used 0x00000000 as your starting address for defining the brick field for example, you would set a register to that memory address and then read from it and its following addresses as such:
+<code>
+     mov  R0,        0x00000000  ; move starting address into R0
+_brick_activeflag:
+     mov  R1,        [R0]        ; load the value in the active flag memory address for the chosen brick
+     ieq  R1,        1           ; display the brick if the flag is active
+     jt   R1,        _display_brick
+     ; repeat loop if not active
+</code>
+Similarly when displaying the bricks we can use [R0+1] and [R0+2].
+Since R0 is the memory address of our brick and each brick has three addresses (active flag, xpos, ypos),
+[R0] is the active flag [R0+1] is the xpos and [R0+2] is the ypos.

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