How do I find the memory size of an address?
How do I find the memory size of an address?
To put it another way, Step 1: calculate the length of the address in bits (n bits) Step 2: calculate the number of memory locations 2^n(bits) Step 3: take the number of memory locations and multiply it by the Byte size of the memory cells.
How many address bits are required for a 4096 bit memory?
Answer: The memory address space is 128 MB, which means 227. However, each word is 8 (23) bytes, which means that you have 224 words. This means you need log2 224 or 24 bits, to address each word.
How many address bits are required to represent 32K memory?
15 address bits
How many bits are in a memory address?
eight bits
How many address bits would you need to read the content of a memory containing 2000 words?
4 Answers. A 1-bit address can address two words (0, 1). A 2-bit address can address four words (00, 01, 10, 11). A 3-bit address can address eight words (000, 001, 010, 011, 100, 101, 110, 111).
How many bits are required for each virtual address?
32 bits
How many address bits are required to represent 16k memory?
16384 addresses
How many bits are there in the data and address inputs of the memory?
How many bits are there in the data and address inputs of the memory? (a) Address: 18 bits Register code: 6 bits Indirect bit: 1 bit 32 – 25 = 7 bits for opcode.
Which register is used to keep the track of next instruction?
Discussion Forum
| Que. | Which of the following registers is used to keep track of address of the memory location where the next instruction is located? |
|---|---|
| b. | Memory Data Register |
| c. | Instruction Register |
| d. | Program Counter |
| Answer:Program Counter |
Which register is used as a processor register?
Following is the list of some of the most common registers used in a basic computer:
| Register | Symbol | Function |
|---|---|---|
| Data register | DR | Holds memory operand |
| Address register | AR | Holds address for the memory |
| Accumulator | AC | Processor register |
| Instruction register | IR | Holds instruction code |
What is the difference between direct and indirect address instruction?
The basic difference between the direct and indirect addressing mode is that in the direct mode, the memory location is directly specified. On the contrary, in the indirect addressing mode, the address of the main memory location is specified.
What is indirect address mode?
Indirect addressing is a scheme in which the address specifies which memory word or register contains not the operand but the address of the operand. For example: 1) LOAD R1, @100 Load the content of memory address stored at memory address 100 to the register R1.
What is a zero address instruction?
It may for example enable stack processing: a zero-address instruction implies that the absolute address of the operand is held in a special register that is automatically incremented (or decremented) to point to the location of the top of the stack. From: zero-address instruction in A Dictionary of Computing »
What is addressing mode with example?
Addressing Modes
| Addressing modes | Example Instruction | Meaning |
|---|---|---|
| Immediate | Add R4, #3 | R4 <- R4 + 3 |
| Displacement | Add R4, 100(R1) | R4 <- R4 + M[100+R1] |
| Register deffered | Add R4,(R1) | R4 <- R4 + M[R1] |
| Indexed | Add R3, (R1 + R2) | R3 <- R3 + M[R1+R2] |
What are different types of addressing mode?
Types of Addressing Modes
- Immediate Mode. In this mode, the operand is specified in the instruction itself.
- Register Mode.
- Register Indirect Mode.
- Auto Increment/Decrement Mode.
- Direct Addressing Mode.
- Indirect Addressing Mode.
- Displacement Addressing Mode.
- Relative Addressing Mode.
How do you find addressing mode?
Here are the addressing modes discussed:
- Immediate: The operand is included in the instruction.
- Direct: The effective address of the operand in memory is part of the instruction.
- Indirect: The instruction contains a memory address, which contains the effective address of the operand in memory.
What is an immediate addressing?
Register and immediate addressing means that the operand is either a register or specified as a constant within the assembly language instruction itself. In register addressing, an operand is fetched from, or written to, a register. For example: In this example, the 16-bit contents of DX are copied into AX.