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What is the Difference between memory mapped IO and IO mapped IO in 8085 mp?
In the 8085 microprocessor, memory-mapped I/O uses the same address space for both memory and I/O devices, allowing up to 64 KB of I/O addresses. In contrast, I/O mapped I/O (also known as port-mapped I/O) utilizes a separate address space for I/O operations, which allows for a limited number of I/O devices to be addressed (up to 256 8-bit ports). The instructions for accessing memory-mapped I/O involve standard memory instructions (like MOV), whereas I/O mapped I/O requires specific instructions like IN and OUT. This distinction affects how devices are interfaced and programmed.
Can microprocessor 8085 take memory A000?
Yes, the 8085 microprocessor can access memory location A000, as it has a 16-bit address bus that allows it to address up to 64KB of memory, ranging from 0000 to FFFF in hexadecimal. The address A000 falls within this range, meaning the 8085 can read from or write to this memory location. However, the actual access depends on the system's memory configuration and whether that specific address is mapped to valid RAM or ROM.
Why ROM is always mapped in lower region of memory map in 8085?
rom values are permanent and we cant change its value.....we can only read but cant write it
What is a memory mapped register?
A memory mapped register is a register that has its specific address stored in a known memory location.
How much maximum memory size that 8085 can access?
Yes and no. All memory location from 0H to 0FFFFH are addressable, but some of them are needed for the program, interrupt vectors, and the stack, so you would need to pay attention to where things are located in memory to design an appropriate program. In addition, if your system is using memory mapped I/O, some locations will be reserved.
Differentiate between memory mapped IO and IO mapped IO?
Memory mapped IO is one where the processor and the IO device share the same memory location(memory) while IO mapped IO is one where the processor and the IO device have different memory located to each other.
The maximum number of Io devices can be interfaced with 8085 in the Io mapped Io technique?
3
How many memory location can be addressed by microprocessor 8085?
The 8085 can address 216, or 65536 different memory locations.
What is slow memory interfacing?
explain how slow memory get interfaced with 8085
What is the meaning of memory mapped bus?
Memory mapped buses helps in the extension of the address of the physical ram through which the devices can access the address
Which is used to connect low memory in 8085?
READY
Which of the data transfer is not possible in 8085 microprocessor?
In the 8085 microprocessor, direct data transfer between two memory locations is not possible. Data must first be loaded into a register from one memory location and then stored into another memory location. The 8085 can only transfer data between registers, memory, and I/O devices using specific instructions, but it does not support direct memory-to-memory transfers.
