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Intel 8085
Introduced by Intel in 1977, the Intel 8085 is an 8-bit microprocessor that is binary-compatible with Intel 8080. It only requires a +5-volt power supply and has been used as a microcontroller.
1,493 Questions
What is implicit addressing mode?
Implicit addressing modes are of the assumption that the data is in predefined registers. also Known as Zero address instructions:
Eg: XLAT ; assumes the operands in AX and BX
AAM ;operates on the contents of AX only
What are the Machine Cycles For Inr M Instruction?
3 for opcode fetch, 1 for opcode decode, 3 for operand fetch, and 3 for opcode store, for a total of 10, not including wait states.
How many address lines are require to access 128MB of memory?
ANSWER There are 2128 combinations of addresses. This is about 3.4 x 1038 locations. Assuming each address holds a 32-bit word, that's 1.2 x 1039 bytes. That's a LOT of memory.
What are the architectural features of the Intel Pentium Dual-Core processor?
The architecture of the Pentium 4 and Pentium D is collectively known as "NetBurst."
What is used to interrupter and summarize?
if you are talking about literature, the dash (-)
but the topic says "Intel 8085, Electronics" so im not sure if this answers it
What is The highest priority interrupt in 8085 microprocessor?
In most of the Intel processors, the highest priority interrupt is the NMI line (called TRAP in the 8085). NMI means a non-maskable interrupt, and that means it cannot be delayed or ignored. The NMI line is usually used when there are problems such as non-recoverable errors, but it could be used for debugging or profiling.
Most of the Intel CPUs have 2 interrupt lines, the NMI line and the standard interrupt line. The regular interrupt line is connected to one or more interrupt controllers which split that interrupt signal to different devices. The NMI line is for the most critical processes in the computer.
What is STA 3000H in microprocessor?
STA 3000H is an 8085 instruction that says to store the accumulator at memory location 3000H.
Write program to find the cube of a number using 8085 microprocessor?
4000
lda 50003a,00,504003
mvi b 0206,024005
mov c,a4f4006
mov d,a574007loop2mvi a 003e,004009loop1add d82400a
dcr c0d400b
jnz loop1c2,09,40400e
mov c,a4f400f
dcr b054010
jnz loop2c2,07,404013
mov a,c794014
sta 500532,05,504017
hlt76
enjoy dear friends :) by abin james nellanikattu
What is the difference between rules and instructions?
Instructions tell how to do something. ("Fill in the bubble that represents the best answer." "Ride your pony across the ring at a trot."
Rules restrict how something may be done. (Always use pencil for standardized tests. Work on your own, no cheating, copying, etc. Never ride a horse without a helmet.)
What is the main difference between 8086 and 8088 microprocessor according to the pin configuration?
The 8086 has a 16 bit bus, while the 8088 has an 8 bit bus. In both A0 through A7 are shared as D0 through D7. The the 8086, A8 through A15 is also shared as D8 through D15.
What is 3 byte instruction in microprocessor?
A two-byte instruction gives the specific function instruction in two bytes, or two words. The first specifies the opcode, which tells the microprocessor what operation will occur. The second specifies the operand, or the data that the operation is done on.
What a brief description do you have of the type of position you desire?
Give a brief description of the type of employment or position you desire.Give a brief description of the type of employment or position you desire.
Which processor had a 32-bit internal bus and a 16-bit external bus?
Which processor has a 32-bit Data Bus and a 24-bit Address Bus?
Write a subroutine to clear the flag register and accumulator?
MVI A,0
ADI 1
MVI A,0
The first MVI only clears the accumulator. The ADI adds one to it, clearing the N, Z, O, C, and P flags. The second MVI clears the accumulator again.
It is possible that I have the sense of the P flag backwards. If so, replace the first MVI with MVI A,2 and the P flag will be correct.
Examples of privileged instructions used by 8085 processor?
There is no protected mode in the 8085 microprocessor, therefore, there are no instructions that are considered privileged.
Why a clock is necessary for a microprocessor?
Microprocessor processes something on each clock pulse
Ora a is executed in intel 8085 microprocessor?
The ORA A instruction does not change the contents of the accumulator. It does, however, set flags to indicate something about the value of the accumulator. In particular, Z means the result is zero, N means it is negative, and P means it has an odd number of ones.
What is data pointer in microcontroller?
DPTR is a 16-bit register
DPTR is made up of two 8-bit registers: DPH and DPL
DPTR holds the memory addresses for internal and external code access and external data access
(eg. MOVC A,@A+DPTR MOVX A,@DPTR MOVX @DPTR,A )
DPTR is under the control of program instructions and can be specified by its 16-bit name, or by each individual byte name, DPH and DPL DPTR does not have a single internal address; DPH and DPL are each assigned an address
Why in 8085 timigdiagram STA intruction has 13 t states?
The STA instruction in the 8085 has 13 T states, 4 for opcode fetch, 3 for low half immediate address fetch, 3 for high half immediate address fetch, and 3 for data write.
its in mnemonics : get the hex code from internet.
MVI B,10H(REGISTER B AS A COUNTER)
LXI H,C000H(SOURCE REGISTER, H-L AS MEMORY POINTER)
LXI D,C050H(DESTINATION REGISTER)
L1: MOV A,M
STAX D
INX H
INX D
DCR B
JNZ L1
RST 1
Is data flow bidirectional or unidirectional?
Data flow is always bidirectional my friend, don't confuse.
