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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
If a memory had 16 bit address bus and a 32 bit data bus what is the largest size of the memory?
A memory with a 16 bit address bus can address 216 or 65536 distinct items. If each item is 32 bits in size, then the item is 4 bytes. The size of this memory is then 262144 bytes. (256Kb)
In 8085 microprocessor 3MHZ is required then why you use 6MHZ cristal?
In the 8085, the internal clock frequency is internally divided by two. Since the basic operating timing frequency is 3 MHz, a 6 MHz crystal is connected externally.
Now, it is because,
One reason to divide a clock by two is to obtain an even 50% duty cycle square wave. It may be that the 8085 internally uses both clock edges, and wouldn't function if one half of the cycle happened to be much shorter than the other.
In the days when the 8085 was new, those nice canned oscillators weren't common, and people often cobbled together clock circuits out of discrete Crystal, capacitors, and logic gates. Dividing by two ensures that you have equally spaced rising and falling edges.
As for 6.144MHz, you will find that it can be divided by an integer to get common baud rate values, at least up to 38400.
What are the Physical constraints associated with the microprocessor?
The physical constaints of microprocessors are tied in with the type and speed of RAM you are using. Checking the motherbard documentation for the type of CPU you have will tell you exactly what type of RAM and how fast of RAM you need, ie. SDRAM, DDR, DDR2, DDR3.
This refers to the width of the processor. A byte has 8 bits and codes 0 to 28-1 (255). Most computers have 32 bit processors.
Show the difference between Motorola 6800 and Intel 8086?
Comparision between motorola6800 And Intel 8086
Where can I get instructions for the Dualit 84409 coffee machine?
Hit the manufacturer's web site and use their contact link to ask about emailing you the document. (It isn't listed on the web site. Odds on bet is that it's been discontinued....) If you get lucky, they'll email you one as a file attachment. Get some help opening it if you need to. Hope this helps.
Pansat, or Pan American Satellite is an owner and operator of satellites and their respective delivery systems. They will have what's known as an `earth station` where they transmit (uplink) the satellite signals to the satellites.
Pansat most likely also rents transponder space on their satellites to other users. Try looking up Pansat on the 'net or Panamsat.
How many address lines are required for connecting CPU to 00 to 0F?
00 to 0F represents 16 addresses Binary representation is 1111 therefore you need 4 address lines to connect to all addresses
What is VDU base memory address?
Visual Display Unit 's Base Memory Address. - Every device in a computer requires a unique base memory address ( an address that the computer systems Bi/oS uses to locate a device) As each device has a unique area of memory, the computer knows that when it uses this area it will be for that device, and thus be able to communicate with the device. Extended Bi/oS can be found on expansion cards with new functions or updated functions. This must be treated as a device so that the currecnt system Bi/oS can read the extended Bi/oS contained on the card, and use them.
Compute the factorial of n using 8085 microprocessors?
Source program
LXI SP, 27FFH ; Initialize stack pointer
LDA 2200H ; Get the number
CPI 02H ; Check if number is greater than 1
JC LAST
MVI D, 00H ; Load number as a result
MOV E, A
DCR A
MOV C,A ; Load counter one less than number
CALL FACTO ; Call subroutine FACTO
XCHG ; Get the result in HL
SHLD 2201H ; Store result in the memory
JMP END
LAST: LXI H, 000lH ; Store result = 01
END: SHLD 2201H
HLT
Subroutine Program:
FACTO:LXI H, 0000H
MOV B, C ; Load counter
BACK: DAD D
DCR B
JNZ BACK ; Multiply by successive addition
XCHG ; Store result in DE
DCR C ; Decrement counter
CNZ FACTO ; Call subroutine FACTO
RET ; Return to main program
Timing Diagram is a graphical representation. It represents the execution time taken by each instruction in a graphical format. The execution time is represented in T-states.
Instruction Cycle:
The time required to execute an instruction is called instruction cycle.
Machine Cycle:
The time required to access the memory or input/output devices is called machine cycle.
T-State:
- The machine cycle and instruction cycle takes multiple clock periods.
- A portion of an operation carried out in one system clock period is called as T-state.
MACHINE CYCLES OF 8085:
The 8085 microprocessor has 5 (seven) basic machine cycles. They are
- Opcode fetch cycle (4T)
- Memory read cycle (3 T)
- Memory write cycle (3 T)
- I/O read cycle (3 T)
- I/O write cycle (3 T)
- Each instruction of the 8085 processor consists of one to five machine cycles, i.e., when the 8085 processor executes an instruction, it will execute some of the machine cycles in a specific order.
- The processor takes a definite time to execute the machine cycles. The time taken by the processor to execute a machine cycle is expressed in T-states.
- One T-state is equal to the time period of the internal clock signal of the processor.
- The T-state starts at the falling edge of a clock.
How do you get the feat wildshape in neverwinter nights?
A Druid automatically gains this feat at Level 5.
^ That is spot on. The only way to get wildshape is by taking 5 levels of druid. So to take the Shifter prestige class you have to be a decent druid first.
Where can you find a timing diagram for a 1993 Ford Probe?
Buy a book--it will be Mazda most likely. Be more specific. Timing of the crank shaft, or cam shaft positions, or distributor? or all three. They all need to be set correctly for your car to run properly, or maybe you might just guess and get lucky--I didn't.
Where can you get the timing diagram for '98 Kia?
Go to kiatechinfo.com register as owner, select year and model, click service manual, click engine, click engine mechanical system, cilck timing system, click timing belt, click repair installation/removal, click installation,done!
Go to your local locksmith. Most have the "box" to program a remote. I paid 20 bucks for 1 remote.
