U2 L14 | Find Count Value for given time Delay in 8085 Microprocessor| Time delay Example of 8085 MP

[@Satvik47]

How to do this question ? Q - Write a delay routine of generating 1 ms delay assume clock frequency of 8085 microprocessor as 5 MHz

[@rakeshsworld472]

I want immediate answer of this question Calculate time delay using nested loop technique load inner loop FFH and outer loop with 38H.Assume clock frequency =2mhz

[@Munnu-hs6rk]

Inr /dcr takes 10t cycles....right? 4 for opcode fetch 3 for memory read 3 for memory write?

[@Munnu-hs6rk]

Ans should be 3.5 approx to 4

[@TechnoTutorials2783]

In case of inr M 10 T IF INR R means any GPR then 4T

[@sahilshrivas6870]

Mam how did you find count N = 255 of FF please explain mam.. And also have a daubt in outside delay

[@TechnoTutorials2783]

FF=1111 1111 in binary =256 in decimal So coint range 0 to 255 total 256

[@sahilshrivas6870]

@@TechnoTutorials2783 mam how it is 255 in decimal please explain

[@TechnoTutorials2783]

@@sahilshrivas6870 FF =1111 1111= 2^7+2^6+2^5+2^4+2^3+2^2+2^1+2^0= 128+64+32+16+8+4+2+1=255

[@SoulFrmTitanic]

Mam, why are we not considering the 7T states in calculation ?? as when counter becomes 0, the no. Of T-states becomes 7T 🙏🏻

[@TechnoTutorials2783]

U can take 7 T as well answer will be approximately same bcoz 3T will take few seconds only Both will be correct when u will take 7T then just multiply 10T with count-1 and for 1 loop takeT

[@mtsquare7634]

Mam untrue bhi hoga vo consider kyu nhi Kiya??

[@TechnoTutorials2783]

U can consider but only 3T ka difference hoga means in microseconds when u take round off toh same hi value aayegi u can consider or not its upto you

[@shabdsahay8171]

vo program given hai ya khud likhna h.....khud likhna h toh nop kyu kia ?

[@TechnoTutorials2783]

Program given hoga

[@StudyWithCuriousExplorer]

maam what is the meaning of count. please explain🙏

[@TechnoTutorials2783]

Means suppose 1ms delay is required between two outputs than how many time loop repeated that is count value Like traffic light if red-light for 1 min than counter will start down counting from 60

[@rupsamondal6377]

Mam what happens with the external t-states ?

[@TechnoTutorials2783]

If loop count is required we ignore external delay bcoz loop delay depends on count value not on loading of counting. If program execution time is required then loop delay + external delay

[@rupsamondal6377]

Thank you so much mam ❤️loved ur lesson

[@TechnoTutorials2783]

@@rupsamondal6377 thanku dear keep watching