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@ -13,7 +13,7 @@ Opcodes:
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ALU = 1XXXXY--
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If Y is 1 invert output
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ADD = -1000Y-- Add A to B output to ACC
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SUB = -0100Y-- Sub A from B output to ACC
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SUB = -0100Y-- Sub B from A output to ACC
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OR = -1100Y-- OR A and B output to ACC
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XOR = -0010Y-- XOR A and B output to ACC
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AND = -1010Y-- AND A and B output to ACC
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@ -80,4 +80,10 @@ Control bus:
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Layer two:
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
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X X X X X X X X X X X X X X X X X X X X X X X X
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A A A A A A A A A X X X X X X X X X X X X X X X
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L L L L L L L L C
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U U U U U U U U C
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- - - - - - - - R
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A B N A S O X A
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W W O D U R O N
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T D B R D
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