HL is a register pair that is used to store 16-bit data in 8085 Microprocessor
The various 16-bit registers on the 8085 are BC, DE, HL, SP, PC.
in 8085 only one accumulator used where in 6800 used two accumulator.
The Intel 8085 is an 8-bit microprocessor introduced by Intel in 1976. It's an enhanced version of the 8080 microprocessor, with additional features and improvements. Key Features: 1.8-bit architecture: Processes 8-bit data. 2.Clock speed: Operates at a clock speed of 3.072 MHz or 4.77 MHz. 3. Instruction set: Supports 78 instructions, including arithmetic, logical, and control instructions. 4. Memory: Can address up to 64 KB of memory. 5. I/O: Provides 40 pins for input/output operations. Applications: Embedded systems: Used in various embedded systems, such as traffic lights, robots, and industrial control systems. Computers: Used in early personal computers, such as the TRS-80 and Sinclair ZX80. Microcontrollers: Served as a precursor to modern microcontrollers. Importance: Influence on modern microprocessors: The 8085's architecture and instruction set influenced the design of later microprocessors. Educational significance: The 8085 is still used in educational institutions to teach microprocessor architecture and programming. The Intel 8085 microprocessor played a significant role in the development of modern computing and remains an important part of computer history.
A subroutine is a group of instructions that will be used repeatedly in diff locations of the program..........rather than repeating the same instructions several times, they can be grouped into a subroutine that is called from diff locations. 8085 has 2 instruction set for dealing with subroutines: 1.CALL -direct the program execution to the subroutine. Generally it pushes address of next instruction of program counter onto the stack,then goes to the address of subroutine. 2.RET:- pops the address of next instruction from the stack and places it in the program counter and returns to that address to continue processing. For example, you have an often used value stored in HL. You have to call a subroutine that you know will destroy HL (with destroy I mean that HL will be changed to another value, which you perhaps don't know). Instead of first saving HL in a memory location and then loading it back after the subroutine, you can push HL before calling and directly after the calling pop it back. Of course, it's often better to use the pushes and pops inside the subroutine.
Because in many statements you use HL as a pointer to memory data, eg: LD B,(HL) SUB A,(HL) LD (HL),E
Intel 8085 is a microprocessor that is used in various electronics devices.
HL is a register pair used to store 16 bit of data in 8085 microprocessor.
8085 is a microprocessor designed by Intel
The 8085 was introduced by Intel in 1977.
The various 16-bit registers on the 8085 are BC, DE, HL, SP, PC.
The data size in the 8085 is 8 bits.
8085 is a 8 bit microprocessor designed by Intel Co.
for the purpose of computing.
XTHL == eXchange Top of stack with HL
The 8085 is a 40 pin ic because Intel designed it that way.
The '8085' in the 8085 microprocessor is the designation given to the microprocessor by Intel. The '5' means it is a single power supply (5 volt) version of the 8080, with enhancements.
+5v supply is alone needed for Intel 8085 Microprocessor