Microinstructions
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INSTRUCTION |
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STEP |
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CF |
ZF |
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HLT |
MI |
RI |
RO |
IO |
II |
AI |
AO |
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SO |
SU |
BI |
OI |
CE |
CO |
J |
FI |
| Fetch |
X |
X |
X |
X |
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0 |
0 |
0 |
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X |
X |
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0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
|
X |
X |
X |
X |
|
0 |
0 |
1 |
|
X |
X |
|
0 |
0 |
0 |
1 |
0 |
1 |
0 |
0 |
|
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
| NOP |
0 |
0 |
0 |
0 |
|
0 |
1 |
0 |
|
X |
X |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
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0 |
0 |
0 |
0 |
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0 |
1 |
1 |
|
X |
X |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
0 |
0 |
0 |
|
1 |
0 |
0 |
|
X |
X |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| LDA |
0 |
0 |
0 |
1 |
|
0 |
1 |
0 |
|
X |
X |
|
0 |
1 |
0 |
0 |
1 |
0 |
0 |
0 |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
0 |
0 |
1 |
|
0 |
1 |
1 |
|
X |
X |
|
0 |
0 |
0 |
1 |
0 |
0 |
1 |
0 |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
0 |
0 |
1 |
|
1 |
0 |
0 |
|
X |
X |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| ADD |
0 |
0 |
1 |
0 |
|
0 |
1 |
0 |
|
X |
X |
|
0 |
1 |
0 |
0 |
1 |
0 |
0 |
0 |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
0 |
1 |
0 |
|
0 |
1 |
1 |
|
X |
X |
|
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
|
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
|
0 |
0 |
1 |
0 |
|
1 |
0 |
0 |
|
X |
X |
|
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
|
1 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
| SUB |
0 |
0 |
1 |
1 |
|
0 |
1 |
0 |
|
X |
X |
|
0 |
1 |
0 |
0 |
1 |
0 |
0 |
0 |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
0 |
1 |
1 |
|
0 |
1 |
1 |
|
X |
X |
|
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
|
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
|
0 |
0 |
1 |
1 |
|
1 |
0 |
0 |
|
X |
X |
|
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
|
1 |
1 |
0 |
0 |
0 |
0 |
0 |
1 |
| STA |
0 |
1 |
0 |
0 |
|
0 |
1 |
0 |
|
X |
X |
|
0 |
1 |
0 |
0 |
1 |
0 |
0 |
0 |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
1 |
0 |
0 |
|
0 |
1 |
1 |
|
X |
X |
|
0 |
0 |
1 |
0 |
0 |
0 |
0 |
1 |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
1 |
0 |
0 |
|
1 |
0 |
0 |
|
X |
X |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| LDI |
0 |
1 |
0 |
1 |
|
0 |
1 |
0 |
|
X |
X |
|
0 |
0 |
0 |
0 |
1 |
0 |
1 |
0 |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
1 |
0 |
1 |
|
0 |
1 |
1 |
|
X |
X |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
1 |
0 |
1 |
|
1 |
0 |
0 |
|
X |
X |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| JMP |
0 |
1 |
1 |
0 |
|
0 |
1 |
0 |
|
X |
X |
|
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
|
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
|
0 |
1 |
1 |
0 |
|
0 |
1 |
1 |
|
X |
X |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
1 |
1 |
0 |
|
1 |
0 |
0 |
|
X |
X |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| JC |
0 |
1 |
1 |
1 |
|
0 |
1 |
0 |
|
0 |
X |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
1 |
1 |
1 |
|
0 |
1 |
0 |
|
1 |
X |
|
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
|
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
|
0 |
1 |
1 |
1 |
|
0 |
1 |
1 |
|
X |
X |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
1 |
1 |
1 |
|
1 |
0 |
0 |
|
X |
X |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| JZ |
1 |
0 |
0 |
0 |
|
0 |
1 |
0 |
|
X |
0 |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
1 |
0 |
0 |
0 |
|
0 |
1 |
0 |
|
X |
1 |
|
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
|
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
|
1 |
0 |
0 |
0 |
|
0 |
1 |
1 |
|
X |
X |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
1 |
0 |
0 |
0 |
|
1 |
0 |
0 |
|
X |
X |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OUT |
1 |
1 |
1 |
0 |
|
0 |
1 |
0 |
|
X |
X |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
|
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
|
1 |
1 |
1 |
0 |
|
0 |
1 |
1 |
|
X |
X |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
1 |
1 |
1 |
0 |
|
1 |
0 |
0 |
|
X |
X |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| HLT |
1 |
1 |
1 |
1 |
|
0 |
1 |
0 |
|
X |
X |
|
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
1 |
1 |
1 |
1 |
|
0 |
1 |
1 |
|
X |
X |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
1 |
1 |
1 |
1 |
|
1 |
0 |
0 |
|
X |
X |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |