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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 dos interrupt and bios interrupt?
There are more than one of them, the most important DOS interrupt is 21H. Consult the related link.
microinstruction: An instruction that controls data flow and instruction-execution sequencing in a processor at a more fundamental level than machine instructions. Note: A series of microinstructions is necessary to perform an individual machine instruction.
a micro instruction specifies one or more micro oprations for the system.
What is the purpose of addressing modes?
addressing modes helps the programmer to store or retrieve the data which is stored in any part of the data memory by addressing mode specified in the program.
What is the direction of information flow on the data bus?
The flow of information on the data bus is bi-directional. When status pin S1 is high, it is a read from IO or memory towards the CPU; when S1 is low, it is a write. S1 is present on the 8085. On the 8086/8088 it is inverted and combined with DT and called DT/R-
What is DMA in 8085 in microprocessor?
DMA stands for Direct Memory Access, in regards to 8085 MP. It consists of 2 pins, namely, HOLD and HLDA. The former of which indicates the processor that either a peripherial or any IO device, is requesting the processor to hold its current activites and give the control of buses to IO devices. HLDA, on the contrary, is the acknowledgement from the microprocessor to the concerned IO device sending the request.
2^32 is amount of blocks that address bus could locate. and each blocks is 64bit because data bus has 64 lines. then maximum number of bits stored in memory is (2^32)*64 bit.
By: Mohammad Saghafi
Email: mohammads1364@yahoo.com
Program for block transfer in 8085?
Block transfer in 8085...
PUSH FLAGS {optional, if registers need to be saved}
PUSH B
PUSH D
PUSH H
LXI H,COUNT
LXI B,SOURCE
LXI D,DESTINATION
LOOP LDAX B
STAX D
INX B
INX D
DCX H
MOV A,H
ORA L
JNZ LOOP
POP H {optional, if registers need to be saved}
POP D
POP B
POP FLAGS
If clock frequency is 5 MHz how much time is required to execute an instruction of 18 T states?
At a clock frequency of 5 MHz (10 MHz crystal) the 8085 has a clock period of 200 ns. An instruction using 18 cycles would use 3.6 us. (Microseconds)
This is for the case with no wait states. Each wait state adds 200 ns. Since an 18 cycle instruction has 5 memory accesses, one wait state per access would add 1 us to the execution time.
What are the INSTRUCTIONS for entering the 5 digit audio code for a 95 Honda Accord?
When you hook the battery back up and turn on the radio, it will read code. Turn on the radio. If the display on the radio says "code", then enter the code using the preset buttons. If it doesn't say "code", try pressing the Mode button until 'code' appears. If you can't get 'code' to appear by pushing buttons, you might have to call your local Honda dealer. If you do not have the code, then you will need the serial # off the radio in order for a Honda dealer to supply the code, unless the original selling dealer has a record of the proper code stored. The car came with 2 little cards with the code listed on them.
How macro calls within macros are handled?
'=============>>
Public Sub Main()
'Your code
Call One
'your code
End Sub
'<<=============
'=============>>
Public Sub One()
MsgBox "Hi from One"
End Sub
'<<=============
> Does it matter where the other macros are stored or is it
> better to have them all in one module?
Unless there are a larger number of macros, they can be stored in a single
module. However, for organisational reasons, it is usually better to store
macros by type in different modules.
Regards
Rollick
1 - 3 - 7 - 2 - 6 - 5 - 4 - 8
The distributor rotor turns COUNTERCLOCKWISE
The marked # 1 position on the distributor cap faces to the REAR
firewall
4 - 8
3 - 7
2 - 6
1 - 5
front
depends whether your talking about the original big boss or the female big boss from MGS 3, if u are talking about her then play the game and watch the cutscenes, it will tell you she did it to end the cold war, she was a hero
First Of All if The person up there had Truly played the game then they would know that the BOSS not ( female big boss) died as a true patriot and was nothing close to evil.
*she was betrayed by her own country*
As for Big Boss, he was never evil , He was trying to fulfill what the Boss couldn't finish.
If the clock frequency is 5 MHz how much time is required to execute an instruction of 18 T states?
At a clock frequency of 5 MHz (10 MHz crystal) the 8085 has a clock period of 200 ns. An instruction using 18 cycles would use 3.6 us. (Microseconds)
This is for the case with no wait states. Each wait state adds 200 ns. Since an 18 cycle instruction has 5 memory accesses, one wait state per access would add 1 us to the execution time.
How to pass the parm parameter in PL1?
In JCL it would be of the form exec pgm=mypgroam, parms="/B" where the info after the "/" is the parameter strring.
Stock exchange symbol for DaimlerChrysler AG (USA).
AnswerActually, since this is in the Computer category, I think the answer is that DCX is the file format used for storing multi-page PCX images. It also may refer to the common filename extension for MS Visual FoxPro.
Pulse is Green/red trace behind the stereo. Remove trim from around Handbrake, then lift the trim around the handbrake, access then to two screws at base of radio facia. Remove glove box (pull sharply to disengage). A third screw, which goes into side of radio can then be removed. Whole facia, complete with radio and air vents can now be pulled forward to expose connector at rear of radio. Green wire with red trace gives a pulse of 4k
How many registers are there in x86?
Considering "x86" ranging from 8086 up to 80486 (ok, Pentium too) 32-bit CPUs ,
there are 29 registers , as follows :
EAX, EBX, ECX, EDX, ESI, EDI, ESP, EBP, EIP, CS, DS, SS, ES, FS, GS, "Status(Flags)-Register" CR0, CR2, CR3, TR4, TR5, TR6, TR7 DR0, DR1, DR2, DR3, DR6, DR7
Alexandre Botao
http://www.botao.org
botao@unix.sh
Should any device be allowed to interrupt CPU while another interrupts are being serviced?
It is possible to allow nested interrupts. This is often done when there is a heirarchy of interrupts, some with higher priority than others. In order for this to work, the second interrupt must not be allowed to influence the progress of the first interrupt. We call this being "thread safe". In a nested scheme, an interrupt mask is set so that higher priority interrupts can be permitted, while blocking interrupts of the same or lower priority, and then interrupts are reenabled during the interrupt service routine. At the conclusion of the first routine, interrupts are disabled again, the mask is restored, and the normal interrupt return sequence is executed.
In the 8085, this can be supported using the Read Interrupt Mask (RIM) and Set Interrupt Mask (SIM) instructions. While not strictly required, the logical priority is often INTR, RST5.5, RST6.6, RST7.5, and then TRAP, in order of increasing priority.
Write a program to multiply two 8 bit numbers in microprocessor 8086?
mov ax,1234h
mov bx,03h
mul bx
hlt
( "THIS IS THE PROGRAMM CODING FOR 8 BIT 2NUMBERE'S MULTIPLICATION
How do you write a assembly language program to subtract two 8 bit numbers?
Code for 8085 microprocessor.
MVI A, Number1
SUI Number2
The code works as follows:
Register A = Number1 - Number2
List out the similarities between call-ret and push pop instructions?
In the case of call-return, that something is the program counter. In the case of push-pop, that something is up to the programmer, and it can be one of AF, BC, DE, or HL.
What is the flowchart of 8085 microprocessor for sawtooth on oscilloscope?
(start)
load control bit in control registerload 00h in accumulator
loop:out it to port a
increment a
repeat loop
What is latch in microprocessor?
Latch are just like inputs which are used to set or reset the output for a given combination.
