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one byte instructions one byte instruction include both the opcode operand in the same byte to identify one byte instruction
i think yesso if 8259 gives interrupt then it will be serviced instantly but since into pin is left hanging the insr bit will never be setand so
instruction size as we have seen already that each instruction has two partsopcode operation code which tells the types of
why the temporary registers w and z are named so i mean we start from abcde then h and l coz h stands for higher bit nd l for lower bit of the
sphl load stack pointer with hl instructionthis instruction copies the contents of hl register pair the stack pointer register
xthl exchange top of the stack with hl instruction the contents of top two location of the stack are exchanged with the contents of
pop psw instruction it is similar to above pop instruction but instead of normal register pairs it uses psw as its operand
pop instructionthis instruction copies the contents of the top two locations of the stack into the specified register
push psw instruction it is similar to above push instruction but instead of normal register paris it use psw as its operand program
what is the logical difference among move a to b and compute b aans in case of move a to b it will move whatever the value of a in to bit mean it
push instructionthis instruction copies the contents of the specified register pair into the stack the contents of
load stack pointer this instruction loads the stack pointer register with the 16 - bit data specified in the instruction the
stack operationstack is a group of memory locations which are part of the same read write memory used for storing data
object repository means not a set of objectsits a common repository for all the people testing developers for seeing all the data in one loginfor
microprocessor is a program-controlled device which fetches the instructions from memory decodes and implements the instructions most micro processor
rim read interrupt mask instructionthis instruction is used to read the status of interrupts and read the serial
sim set interrupt mask instructionthis instruction is used to mask unmask 8085 interrupts and send serial output data the
microprocessor have rom chip because it have instructions to implement datait have the monitor program which not only include implementation
di disable interrupts instructionthe interrupt enable flip flop is reset and all the interrupts of 8085 microprocessors except
ei enable interrupts instruction the interrupt enable flip flop is set and all the interrupts of 8085 microprocessor are
how many logical drives is it possible to fit onto a physical diskans maximum of 24 logical drives can be fit into physical disk the extended
cmc complement carry instruction this instruction complements the carry flag i e if the carry flag is 1 before the execution of
stc set carry instruction this instruction sets the carry flag to 1 the instruction format isstc flags except carry no
nop no operation instruction no operation is performed when this instruction is executed the instruction format is
hlt halt instruction the microprocessor halts the execution of the program and enters into the wait state the address and