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MICROPROCESSOR INSTRUCTION REFERENCE->SIM

SIM     Set Interrupt Mask from Accumulator

Accumulator
Bit        Destination

0    Interrupt Mask for RST5.5
1    Interrupt Mask for RST6.5
2    Interrupt Mask for RST7.5
3    Mask Set Enable
4    Reset RST7.5
5    Undefined
6    Serial Output Enable
7    Serial Output Data

Flags

None  affected
    

No of bytes	Cycles
	8085	8080A
1	4	N/A