# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1323562295 -3600
# Node ID 42d9fec68cdd7ba8c8231590b90af61e99befa63
# Parent  18cb621de9ddac82b69a2d3815d65b3d5714f782
Replaced array usage with much simpler list operations.

diff -r 18cb621de9dd -r 42d9fec68cdd ula.py
--- a/ula.py	Sun Dec 11 01:02:06 2011 +0100
+++ b/ula.py	Sun Dec 11 01:11:35 2011 +0100
@@ -4,9 +4,6 @@
 Acorn Electron ULA simulation.
 """
 
-import array
-import itertools
-
 WIDTH = 640
 HEIGHT = 512
 INTENSITY = 255
@@ -284,7 +281,7 @@
 
     "Return an array representing the computer's memory."
 
-    return array.array("B", itertools.repeat(0, MAX_MEMORY))
+    return [0] * MAX_MEMORY
 
 def get_screen():
 
@@ -293,12 +290,7 @@
     x = 0
     screen = []
     while x < WIDTH:
-        y = 0
-        column = []
-        while y < HEIGHT:
-            column.append((0, 0, 0))
-            y += 1
-        screen.append(column)
+        screen.append([(0, 0, 0)] * HEIGHT)
         x += 1
     return screen