Intel instruction set. x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, xA, xB, xC, xD, xE, xF. 0x, NOP 1 4 , LXI B,d16 3 10 , STAX B 1 7 , INX B 1 6 –K Opcode sheet for Microprocessor with descriptionMnemonic ACI n ADC r ADC M ADD r ADD M ADI n ANA r ANA M ANI n CALL a CC a CM a CMA CMC. tes. com. Gursharan Singh Tatla. Page 1 of 6. OPCODES TABLE OF INTEL Opcodes of Intel in Alphabetical Order. Sr. No. 1. 2. 3. 4. 5.

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Subtraction and bitwise logical operations on 16 bits is done in 8-bit steps.

A NOP “no operation” instruction exists, but does not modify any of the registers or flags. It has a bubble memory option and various programming modules, including EPROM, and Intel and programming modules which are plugged into the side, replacing stand-alone device programmers.

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Opcodes of 8085 Microprocessor

Pin 39 is used as the Hold pin. In other projects Wikimedia Commons. These instructions use bit operands and include indirect loading and storing of a word, a subtraction, a shift, a rotate, and offset operations.

Discontinued BCD oriented 4-bit Retrieved from ” https: Adding HL to itself performs a bit arithmetical left shift with one instruction. Once designed into such products as the DECtape II controller and the VT video terminal in the late s, the served for new production throughout the lifetime of those products. All data, control, and address signals are available on dual pin headers, and a large prototyping area is provided.


This page was last edited on 16 November opcodd, at The original development system had an processor. An immediate value can also be moved into any of the foregoing destinations, using the MVI instruction. Adding the stack pointer to HL is useful for indexing variables in recursive opccode frames. Like larger processors, it has CALL and RET instructions for multi-level procedure calls and returns which can be conditionally executed, like jumps and instructions to save and restore any bit register-pair on the machine stack.

Direct copying is supported between any two 8-bit registers and between any 8-bit register and a HL-addressed memory cell, using the MOV instruction.

Opcodes of Microprocessor | Electricalvoice

From Wikipedia, the free encyclopedia. The sign flag is set if the result has a negative sign i.

In many engineering ocpode [7] [8] the processor is used in introductory microprocessor courses. As in many other 8-bit processors, all instructions are encoded in a single byte including register-numbers, but excluding immediate datafor simplicity.

For two-operand 8-bit operations, the other operand can be either an immediate value, another 8-bit register, or a memory cell addressed by the bit register pair HL. All interrupts are enabled by the EI instruction and disabled by the DI instruction.

Later an external box was made available with two more floppy drives. The internal clock is available on an output pin, opckde drive peripheral devices or other CPUs in lock-step synchrony with the CPU from which the signal is output.


Although the is an 8-bit processor, it has some bit operations. It also has a bit program counter and a bit stack pointer to memory replacing the ‘s internal stack.

SIM and RIM also allow the global opcodde mask state and the three independent RST interrupt mask states to be read, the pending-interrupt states of those same three interrupts to be read, the RST 7.

The later iPDS is a portable unit, about 8″ x 16″ x 20″, with a handle. A surprising number of spare card cages and processors were being sold, leading to the development of the Multibus as a separate product.

Intel – Wikipedia

Retrieved 31 May One sophisticated instruction is XTHL, which is used for exchanging the register pair HL with the value stored at the address indicated by the stack pointer. State signals are provided by dedicated bus control signal pins and two dedicated bus state ID pins named S0 and S1.

There are also eight one-byte opcide instructions RST for subroutines located at the fixed addresses 00h, 08h, 10h, These kits usually include complete documentation allowing a student to go 88085 soldering to assembly language programming in a single course.