How many instruction are there in 8085?
74 instructions
How many instructions are in a microprocessor?
Number of instructions in 8085 Microprocessor
| Description | No. of opcodes | No. of instruction types |
|---|---|---|
| Branch Instructions | 36 | 8 |
| I/O Instructions | 2 | 2 |
| Interrupt Instructions | 5 | 5 |
| Total | 246 | 66 |
What are instructions of 8085?
Arithmetic Group
| Instruction Set | Explanation | Flags |
|---|---|---|
| ADI data [A] ← [A] + data | Add immediate data to accumulator | All |
| ACI data [A] ← [A] + data + [CS] | Add with carry immediate data to accumulator | All |
| DAD rp [H-L] ←[H-L] + [rp] | Add register paid to H-L pair | CS |
| SUB r [A] ←[A]-[r] | Subtract register from accumulator | All |
What are the types of instructions set in 8085?
Instruction Set Classification of 8085 Microprocessor
| Description | No. of opcodes | No. of instruction types |
|---|---|---|
| Data transfer Instructions | 83 | 13 |
| Arithmetic Instructions | 62 | 14 |
| Logical Instructions | 43 | 15 |
| Stack Instructions | 15 | 9 |
What is pop instruction?
Home » Instructions » POP. The POP instruction reads a byte from the address indirectly referenced by the SP register. The value read is stored at the specified address and the stack pointer is decremented. No flags are affected by this instruction.
What is the use of push and pop instruction?
The easiest and most common way to use the stack is with the dedicated “push” and “pop” instructions. “push” stores a constant or 64-bit register out onto the stack. The 64-bit registers are the ones like “rax” or “r8”, not the 32-bit registers like “eax” or “r8d”.
What is the function of push and pop instruction?
The easiest and most common way to use the stack is with the dedicated “push” and “pop” instructions. “push” stores a constant or 64-bit register out onto the stack. The 64-bit registers are the ones like “rax” or “r8”, not the 32-bit registers like “eax” or “r8d”. “pop” retrieves the last value pushed from the stack.
What is the instruction size of a call instruction?
Far Calls in Real-Address or Virtual-8086 Mode. With the pointer method, the segment and offset of the called procedure is encoded in the instruction using a 4-byte (16-bit operand size) or 6-byte (32-bit operand size) far address immediate.