# How Do I Calculate The Number Of Address Lines?

## How many lines are there in address bus?

36The width of the address bus (that is, the number of wires) determines how many unique memory locations can be addressed.

Modern personal computers and Macintoshes have as many as 36 address lines..

Address Line 1 is for the street address. Address Line 2 is for the apartment, suite or space number (or any other designation not literally part of the physical address) If the apartment, suite, or space number is short, and the address is short, it can all be shown on one line.

## How many address lines are required for a 2k memory?

11 address linesIt is 2k in size. 11 address lines are needed to address all the addresses inside the EPROM. A similar calculation reveals that the 2K RAM also needs 11 address lines. The PIO chip only has 4 bytes inside, so it only needs 2 address lines.

## What is the operating frequency of 8085?

3 MHzInternally 8085A works with a frequency of 3 MHz internally with clock frequency. Hence a crystal of frequency of 6-MHz crystal gets connected between X1 and X2. Every operation in the entire 8085 system occurs with the given synchronization process with the clock.

## How address and data lines are demultiplexed in 8085?

AD0-AD7 lines are multiplexed and the lower half of address A0-A7 is available only during T1 of the machine cycle. The latching of lower half of an address is completed by using external latch and ALE signal from 8085. …

## How many address lines are required for a microprocessor having total addressable memory of 4 MB?

4 MiB is 2^2 MiB so 2^22 bytes. So basically 22 address lines.

## What is the number of address lines required for 1 MB memory?

20Data are identified by the physical memory address and the addresses are stored in the form of binary format to allow the data bus to access the memory. Required address line: “20” address lines or address bus are required to span “1MB” memory space. Because 1MB is equal to bytes.

## What is the size of address bus?

The width of the address bus determines the amount of memory a system can address. For example, a system with a 16-bit address bus can address 2^16 memory locations. If each memory location holds one byte (8 bits), the addressable memory space is 644 KB of memory.

## How many address lines are there in 8085?

16 address lineIntel 8085 is an 8-bit microprocessor which has 16 address line for 16-bit address of a memory location. 8 higher order address bits are transferred through 8 bit lines out of this 16 address line while remaining lower order 8 bits of the address are sent through another 8 lines multiplexed with the 8-bit data lines.

## What is a 32 bit address?

A 32-bit address is the address of a single byte. Thirty-two wires of the bus contain an address (there are many more bus wires for timing and control). Sometimes people talk about addresses like 0x2000, which looks like a pattern of just 16 bits.

## Which Interrupt has the highest priority?

TRAPTRAP is the internal interrupt that has the highest priority among all interrupts except the divide by zero exception.

## How many address lines are required to represent 32k memory?

Ans. 32K = 25 x 210 = 215, Hence 15 address bits are needed; Only 16 bits can address this.

## How many address lines are there in 8086?

All internal registers, as well as internal and external data buses, are 16 bits wide, which firmly established the “16-bit microprocessor” identity of the 8086. A 20-bit external address bus provides a 1 MB physical address space (220 = 1,048,576).

## What are the 3 types of buses?

Three types of bus are used.Address bus – carries memory addresses from the processor to other components such as primary storage and input/output devices. … Data bus – carries the data between the processor and other components. … Control bus – carries control signals from the processor to other components.

## How can we calculate number of address lines required to interface required amount of memory with any processor?

It depends on the processor, and its RAM interface. Some processors will transmit data to and from RAM 128 bits at a time, for example, and individual bytes are sorted out within the processor. 128 bits = 16 bytes, so you need 4 address lines less (28 instead of 32).

## What is address line and data line?

Data inside a computer is accessed by means of metallic conductors called address lines. Each of them carries a bit of information, the same as a data line. A group of address lines is called an address bus.

## How do I know my memory size?

In your example for Range 1, you are correct. That is the size of the memory, stated in hexidecimal, in bytes. You may gain the most insight by first converting 00FF FFFF to a decimal number, then converting that number of bytes into megabytes. 1 MB = 1 Megabyte = 1024 * 1 KB = 1,048,576 bytes.

## How many separate address and data lines are needed for a memory of 8k 16?

8K∗16=213∗16, thus 13 address lines and 16 data lines.

## How many address bits are required for a 2048 bit memory?

11 bitsIt means that a memory of 2048 words, where each word is 4 bits. So to address 2048 (or 2K, where K means 2^10 or 1024), you need 11 bits, so 11 address lines.