30 lines
1.5 KiB
Plaintext
30 lines
1.5 KiB
Plaintext
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5. Structure of the microinstruction task.
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══════════════════════════════════════════
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The memory of microinstructions in microprocessor complex contains
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the separate microinstructions, each of which is divided on many field.
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The command of the assembler is modifies some parts of microinstruction
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field. Whole microinstruction is assigned by operator for microinstruction
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assign, which is described by assistans of two figured bracket
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{}
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Thereby collection of the assembler commands is limited inwardly
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'{}' and presents one microinstruction of the microprocessor complex.
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Inwardly bracket can be kept any amount of the commands of
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assembler, or no one. So even at assigning of empty microinstruction
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you determine actions, that produced in emulator of the microprocessor.
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Usually - it's "empty" actions that corresponding to command NOP if
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it existed.
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Main rules of the commands writing on assembler language "COMANDOR" is
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described below:
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1) all commands of the assembler must be fited inwardly in operator of
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the microinstruction assign '{}';
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2) command always begins with name of the command, which is reserved
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mnemonics;
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3) operands divide between itself by operator of the division operands
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',';
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4) command must be ended by operator of the command end ';';
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