Microprocessor
Microprocessor is a microcomputer on a single chip. A
microprocessor are of various types such as 20 pin microprocessor or a 40 pin
microprocessor. A microprocessor is a programmable digital electronic component
that incorporates the functions of a central processing unit (CPU) on a single
semi conducting integrated circuit (IC). The microprocessor was born by reducing
the word size of the CPU from 32 bits to 4 bits, so that the transistors of its
logic circuits would fit onto a single part. One or more microprocessors
typically serve as the CPU in a computer system, embedded system, or handheld
device.
The microprocessor handles the logic operations in a computer, such as adding,
subtracting, and copying.
The integrated circuit chip that performs the bulk of data processing and
controls the operation of all of the parts of the system.
A general-purpose logic chip is called a microprocessor, and it processes by
executing instructions. A special-purpose logic chip is "hardwired" at the
circuit level to perform a fixed set of functions, such as the chipset in a PC
Instruction set
MOV Move
MVI Move Immediate
LDA Load Accumulator Directly from Memory
STA Store Accumulator Directly in Memory
LHLD Load H & L Registers Directly from Memory
SHLD Store H & L Registers Directly in Memory
LXI Load Register Pair with Immediate data
LDAX Load Accumulator from Address in Register Pair
STAX Store Accumulator in Address in Register Pair
XCHG Exchange H & L with D & E
XTHL Exchange Top of Stack with H & L
ADD Add to Accumulator
ADI Add Immediate Data to Accumulator
ADC Add to Accumulator Using Carry Flag
ACI Add Immediate data to Accumulator Using Carry
SUB Subtract from Accumulator
SUI Subtract Immediate Data from Accumulator
SBB Subtract from Accumulator Using Borrow (Carry) Flag
SBI Subtract Immediate from Accumulator Using Borrow (Carry) Flag
INR Increment Specified Byte by One
DCR Decrement Specified Byte by One
INX Increment Register Pair by One
DCX Decrement Register Pair by One
DAD Double Register Add; Add Content of Register
Pair to H & L Register Pair
ANA Logical AND with Accumulator
ANI Logical AND with Accumulator Using Immediate Data
ORA Logical OR with Accumulator
OR Logical OR with Accumulator Using Immediate Data
XRA Exclusive Logical OR with Accumulator
XRI Exclusive OR Using Immediate Data
JMP Jump
CALL Call
RET Return
Jumps Calls Returns
C CC RC (Carry)
INC CNC RNC (No Carry)
JZ CZ RZ (Zero)
JNZ CNZ RNZ (Not Zero)
JP CP RP (Plus)
JM CM RM (Minus)
JPE CPE RPE (Parity Even)
JP0 CPO RPO (Parity Odd)