0
JNC is Jump No-Carry, so the carry flag is checked. JNZ is Jump No-Zero, so the zero flag is checked.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
There are 7 t-states of JNZ instruction when the loop condition becomes false while it is 10 t-states when the condition is true.why is it so?
for eg: JNZ 8050 so when the condition is true it would take 1. opcode fetch- 4T 2. Memory read- 3T 3. memory read- 3T total 10 T states and when the condition is false it takes 1. opcode fetch-4T 2. 3T states for checking flags and incrementing PC.
8085 program to check whether no is prime or not?
Lda 8500 mov c,a cpi 02h jz l1 cpi 01h jz l1 mvi e,01h mvi h,00 mvi b,02h l4: mvi d,00 mov a,c l2: sub b inr d cmp b jnc l2 cmp e jz l3 jnc l3 inr h l3:inr b dcr d jnz l4 mov a,h cmp e jz l5 jnc l5 mov a,01 sta 8501 hlt l5: mov a,0e sta 8501 hlt
Why flags are used in 8086 processors?
Flags are used in CPUs to return the status of mathematical computations. They are used so conditional operations will work. Flags will set under conditions such as a result being negative, the result being zero, a comparison being equal, whether there is an overflow (number too big for the register), and whether there is a mathematical carry operation.Here is an example of how flags are used in Assembly:Cmp AX, 0 ;Is it zero?Jnz Skip ;If not, skip past next instruction.Sub AX, 1 ;Subtract one from the AX register.:Skip ;Label to skip to.So when the comparison is made, the zero flag may be set. Then Jnz (jump if not zero) is a conditional jump which only works when the zero flag is not set. There is also the Jz command to jump if zero. The flags register itself is rarely accessed directly, but many computations and opcodes affect or rely on the flags.
What is loop in microprocessor?
A loop in a microprocessor, like any loop in any programming language, is a series of instructions that is executed repeatedly until some condition is satisfied. An example of a delay loop in the 8085 might be... . PUSH FLAGS . XRA A L INR A . JNZ L . POP FLAGS This piece of code, with a 1 MHz clock, will take about 4.6 mS to execute, and it will save and restore the accumulator and flags.
Write an ALP to count even numbers and odd numbers?
Mov cl, 05 xor bl, blxor dl, dl lea si, series next2: mov al, [si] shral, o1 jnc next1 inc bl jmpnext3 next1: inc dl next3: inc sidec cl jnz next2 mov even, dlmov odd, bl end
Multiplication 16 bit program for 8085?
Lxi b, 0000h lhld 8000h xchg lhld 8002h dcx d l006: lda 8002h add l mov l, a lda 8003h adc h mov h, a jnc l013 l013: inx b dcx d mov a, d ora e jnz l006 shld 8006h mov l, c mov h, b shld 8004h hlt
What is the airport code for Jinzhou Xiaolingzi Airport?
The airport code for Jinzhou Xiaolingzi Airport is JNZ.
How can I subtract two long numbers N bytes using assembly language or debugger JNZ must be involved?
Actually, you don't need JNZ. You simply subtract the low order halves, and then you subtract with borrow the high order halves. You can carry this to any arbitrary precision.
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
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
Write 8085 assembly language program for BCD up counter and display using 8279?
loop: mvi c,59 dcr c mov a,c daa movc,a jnz loop end
What is meant by flag is set or not set in 8085 processor?
The flags are testable conditions that are set after many arithmetic or logical instructions to indicate something about the result of the result. For instance, the Z flag means the result is zero, the N flag means it is negative, the O flag means a signed overflow occurred, the C flag means an unsigned overflow occurred, and the P flag means an even number of bits is set in the result. You can use the various flag testable jump instructions, such as JZ or JNZ to test the flag after performing an operation that sets or resets the flag.
