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.
SIM stands for “Set Interrupt Mask” It is 1 byte instruction RIM stands for “Read Interrupt Mask” 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.
branch instruction
It fetches the next 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
Instruction Set