The processor stops and goes to the halt state. If an interrupt occurs, it responds and then continues execution.
MUL is not an 8085 instruction.
instruction register is used to store the next instruction to be executed. instruction pointer is used to store the address of the next instruction to be executed.
Its role is to point to the next instruction to be executed in the CPU. It always points to the next instruction to be executed in the CPU
All the programming instructions whcih are basically in the assembly code has the corresponding hexadecimal code.the microprocessor understand or interprets what this code is and based on that it performs operation for eg HLT which had hexcode 76 the microprocessor understands76 as tha halt instruction and based on that it halts or terminates the program Anand bhat(mca@kiit-870024)
When a branch (or "jump") instruction is executed, the condition codes bits (in the flag register) determine whether or not the Program Counter (PC register) is changed to the Effective Address specified by the instruction; if not, then the PC is unchanged.
it has an instruction set of a few hundred instructions.
The value being pushed (push [value]) is placed on the top of the stack (esp) and the size of the value is added to esp.
The Instruction Register (IR) stores the instruction currently being executed. In simple processors each instruction to be executed is loaded into the instruction register which holds it while it is decoded, prepared and ultimately executed.
The function of the program counter register is to hold the address of the instruction that is being executed and (later) to hold the address of the instruction that will be executed next.
when conditional jump instruction is executed it has 10 m/c cycles bt when nt executed it has 7 m/c cycles....while unconditional jump instruction has 10 m/c cycles...
To get the next micro instruction to be executed.
input