8085 MICROPROCESSOR
FEATURE OF 8085
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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subscriber identity module
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subscriber identity management
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Set Interrupt Maskable
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Set Internet Maskable
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Detailed explanation-1: -Set Interrupt Mask (SIM) – It is used to implement the hardware interrupts (RST 7.5, RST 6.5, RST 5.5) by setting various bits to form masks or generate output data via the Serial Output Data (SOD) line.
Detailed explanation-2: -In 8085 Instruction set, SIM stands for “Set Interrupt Mask”. It is 1-Byte instruction and it is a multi-purpose instruction. The main uses of SIM instruction are – Masking/unmasking of RST7.5, RST6.5, and RST5.5.
Detailed explanation-3: -If MSE bit = 1, the SIM instruction is used for masking or unmasking of interrupts. Then the LS 3 bits provide information about masking or unmasking of interrupts.
Detailed explanation-4: -SIM stands for set interrupt mask which is handling the interrupts in 8085 microprocessor.
Detailed explanation-5: -Hence we name the TRAP pin equivalently as RST 4.5. It is referred as trap by INTEL. Non-maskable interrupt is TRAP whereas maskable is interrupt. At location 4.5 * 8, we do not have the ISS.