So I am writing a 6502 emulator, and now wants to test out some programs. I decided to generate the 6502 assembly from C using https://godbolt.org/ . I wrote a simple program declaring two variables and then adding them and storing the result on a third variable. The generated assembly output using ...

I was going through the instruction set of 6502 at https://www.masswerk.at/6502/6502_instruction_set.html#PLA . Now below the PLP (Pull Processor Status from Stack) instruction, it is stated that The status register will be pulled with the break flag and bit 5 ignored.
As far PLA instruction is ...

I was reading the JMP instruction of 6502 at https://www.masswerk.at/6502/6502_instruction_set.html#CMP

It states the folllowing:
JMP: Jump to New Location

(PC+1) -> PCL
(PC+2) -> PCH
I understand that the JMP instruction will change the Program Counter to the address given by the operand of ...

I was wondering how does a 6502 processor knows when to stop the Fetch-Decode-Execute-Update cycle
Suppose I have a few lines of instruction say:
LDA $01
ADC $02
STA $0671
I get the program execution up to the first three instruction, but how does the processor knows after executing the third ...

Apologies in advance if my question is too basic, I tried searching for the answer elsewhere but couldn't find it.
So I am trying to emulate a 6502 like processor, and currently I am just trying to write a very basic blueprint code for the project. As part of it I have written an 8 bit register, but ...