49
0002 0003
LR 0000
0001
0000
0004 0005
0106 0107
Address Instruction Operands
000 LD 0002
001 AND NOT 0003
002 OR 0001
003 AND 0000
004 LD NOT 0004
005 AND 0005
006 OR LD --
007 LD NOT 0106
008 AND 0107
009 OR LD --
010 OUT LR 0000
The following diagram requires five blocks, which here are coded in order
before using OR LOAD and AND LOAD to combine them starting from the
last two blocks and working backward. The OR LOAD at program address
008 combines blocks d and e, the following AND LOAD combines the result-
ing execution condition with that of block c, etc.
LR 0000
0000
0003
0004
0106 0107
0001 0002
0005
Block e
Block dBlock c
Block b
Block a
Address Instruction Operands
Blocks d and e
Block c with result of above
Block b with result of above
Block a with result of above
000 LD 0000
001 LD 0001
002 AND 0002
003 LD 0003
004 AND 0004
005 LD 0005
006 LD 0106
007 AND 0107
008 OR LD --
009 AND LD --
010 OR LD --
011 AND LD --
012 OUT LR 0000
Again, this diagram can be redrawn as follows to simplify program structure
and coding and to save memory space.
0106 0107
LR 0000
0005
0001 0002
0003 0004 0000
Address Instruction Operands
000 LD 0106
001 AND 0107
002 OR 0005
003 AND 0003
004 AND 0004
005 LD 0001
006 AND 0002
007 OR LD --
008 AND 0000
009 OUT LR 0000
Basic Programming Section 3-4
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