What is addressing mode of RAL?
RAL is an example of an Implicit Addressing mode. The way of specifying data to be operated by an instruction is called addressing mode. In this mode, the data (8/16 bit) is specified in the instruction itself. Eg. MVI 30H, LXI H, 2000 H, ORI 30M etc.
What is the addressing mode of CMP instruction?
Compare memory with accumulator (CMP M): This is a 1-byte instruction. It compares the data byte in the register or memory with the contents of accumulator. It uses indirect addressing mode.
What is the addressing mode of mov si ax?
Direct addressing mode: In the direct addressing mode, a 16-bit memory address (offset) directly specified in the instruction as a part of it. Example: MOV AX, [5000H].
What is addressing mode and its types?
Applications of Addressing Modes-
| Addressing Modes | Applications |
|---|---|
| Immediate Addressing Mode | To initialize registers to a constant value |
| Direct Addressing Mode and Register Direct Addressing Mode | To access static data To implement variables |
How are instructions classified?
These instructions can be classified into the following five functional categories: data transfer (copy) operations, arithmetic operations, logical operations, branching operations, and machine-control operations. An instruction is a binary pattern designed inside a microprocessor to perform a specific function.
What is the example of three byte instruction?
Three-byte instruction is the type of instruction in which the first 8 bits indicates the opcode and the next two bytes specify the 16-bit address. The low-order address is represented in second byte and the high-order address is represented in the third byte.
What is Xchg instruction?
In 8085 Instruction set, there is one mnemonic XCHG, which stands for eXCHanGe. This is an instruction to exchange contents of HL register pair with DE register pair. This instruction uses implied addressing mode. As it is1-Byte instruction, so It occupies only 1-Byte in the memory.
Which one of the following is a vectored interrupt?
Here TRAP, INTR, RST 7.5 are vectored interrupts.