28 Sep 2011 Thread: instruction memory vs data memory does appear a little confusing to me too :) ) However, what you've inferred is absolutely correct. 13 Feb 2016 Another kind of memory access is an instruction fetch, which happens when the program counter gets a new value as part of running the The instruction memory stores up to 4,096 instructions (using 12-bit . It is used in tandem with the ret instruction, which returns from the subroutine to the place 2 Sep 2015 Program is instruction what CPU executes, data is information that program uses for customization and Program memory: Where the application is stored. In computing, the instruction register (IR) or current instruction register (CIR) is the part of a CPU's control unit that holds the instruction currently being executed or decoded. In simple processors, each instruction to be executed is loaded into the instruction register, which the instruction register after the processor fetches it from the memory location A control unit (CU), which manages the various components of the computer. It reads and interprets instructions from memory and transforms them into a seriesCan someone tell me what is the difference between Instruction and data memory. An instruction is an order given to a computer processor by a computer program. in carrying out the instruction, or the location in computer memory of data. architecture uses separate memory for instruction and data. Instruction memory is read-only – a programmer. cannot write into the instruction memory. To read from the data memory, set Memory read =1. Also for our instruction memory we will have 4 reads and 4 writes. to read, the corresponding instruction_rd_out output will then tell you what is in that location.