RIM stands for read interrupt mask and SIM stands for set interrupt mask.The SIM instruction is used to copy the contents of the accumulator into the interrupt mask.
The RIM instruction is used to interpret the RST interrupt positions.
The SIM and RIM instructions in the 8085 microprocessor are used to set (SIM) and read (RIM) the interrupt mask. With SIM, you can mask or unmask RST5.5, RST6.5, and RST7.5, you can reset the pending RST7.5 flip flop, and you can set or reset the SOD (Serial Output Data) pin.
Give the significance of sim and rim instructions available in 8085
SIM stands for βSet Interrupt Maskβ It is 1 byte instruction RIM stands for βRead Interrupt Maskβ it is 1 byte MULTI-PURPOSE instruction.
RIM, SIM, RST, to name three.
No. They have a different instruction set. However, the processors are sufficiently similar that an 8086 assembler could assemble an 8085 program, given appropriate constants and macros. Some things, however, such as RIM, SIM, RST, etc. do not have equivalents in the 8086.
It fetches the next instruction.
branch instruction
it goes to queue for next instruction
Special restart instruction used with interrupts
it has an instruction set of a few hundred instructions.
The Instruction Pointer (IP) in an 8086 microprocessor contains the address of the next instruction to be executed. The processor uses IP to request memory data from the Bus Interface Unit, and then increments it by the size of the instruction.
A=HL+A or A=DE+A
1byte instruction = MOV A,B 2byte instruction = MVI A,01H 3byte instruction = STA 2030H
mov