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Need help with 8086 assembly language
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I am new to Microprocessor 8086. i should submit this assignment by monday evening. Can anybody help me with this question?
Q1 Write an 8086 assembly language program that will compute:
2.0 * log10 X for x = 0.1, 1.0, 10.0, 100.5, 1000.0, and six other values using a loop. All values are in the single-precision (short real) format.
Kindly help me. I am breaking my head like anything
Q1 Write an 8086 assembly language program that will compute:
2.0 * log10 X for x = 0.1, 1.0, 10.0, 100.5, 1000.0, and six other values using a loop. All values are in the single-precision (short real) format.
Kindly help me. I am breaking my head like anything
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Join Date: Aug 2005
Posts: 15,407
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Solved Threads: 1467
post the code you are writing. Are you allowed to use the math coprocessor for log and other math functions ?
Don't PM me with questions -- you might get a nasty PM in response. If you have a question then post it in one of the forums.
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Join Date: Nov 2006
Posts: 134
Reputation:
Solved Threads: 3
Junior Poster
I would try using the FYL2X instruction, which computes:
st(1) = st(1) * log2(st(0)
Where log2 is logarithm to base 2. You can get from log base 2 to log base 10 with the formula:
log10(x) = log2(x) * log10(2)
st(1) = st(1) * log2(st(0)
Where log2 is logarithm to base 2. You can get from log base 2 to log base 10 with the formula:
log10(x) = log2(x) * log10(2)
Hi even im looking out the answer for the same question
in case u know the answer or get it from some one kindly send it to me...
in case u know the answer or get it from some one kindly send it to me...
.data
short REAL4 0.1,1.0,10.0, 100.5, 1000.0, 400.0, 40.5, 60.6,8.9,10.1
count db 0ah
.code
Lea si, short
Mov cl, count
Loop1:
;moving the element to to ax register
Mov ax, [si]
;Push ax into first position
fld ax
;This instruction is used to find the logarithm of the top most element of the stack
FLDLG2
;Pop the element from the stack
Fstp dl
;displaying the value
Mov ah,02h
Int 21h
Loop Loop1
Mov ah,4ch
Int 21h
If u have any queries, just reply me
short REAL4 0.1,1.0,10.0, 100.5, 1000.0, 400.0, 40.5, 60.6,8.9,10.1
count db 0ah
.code
Lea si, short
Mov cl, count
Loop1:
;moving the element to to ax register
Mov ax, [si]
;Push ax into first position
fld ax
;This instruction is used to find the logarithm of the top most element of the stack
FLDLG2
;Pop the element from the stack
Fstp dl
;displaying the value
Mov ah,02h
Int 21h
Loop Loop1
Mov ah,4ch
Int 21h
If u have any queries, just reply me
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Originally Posted by zunnur 
I am new to Microprocessor 8086. i should submit this assignment by monday evening. Can anybody help me with this question?
Q1 Write an 8086 assembly language program that will compute:
2.0 * log10 X for x = 0.1, 1.0, 10.0, 100.5, 1000.0, and six other values using a loop. All values are in the single-precision (short real) format.
Kindly help me. I am breaking my head like anything
Last edited by Ancient Dragon; Apr 28th, 2007 at 3:23 pm. Reason: snipped email
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Originally Posted by mmahima2002
.data
short REAL4 0.1,1.0,10.0, 100.5, 1000.0, 400.0, 40.5, 60.6,8.9,10.1
count db 0ah
.code
Lea si, short
Mov cl, count
Loop1:
;moving the element to to ax register
Mov ax, [si]
;Push ax into first position
fld ax
;This instruction is used to find the logarithm of the top most element of the stack
FLDLG2
;Pop the element from the stack
Fstp dl
;displaying the value
Mov ah,02h
Int 21h
Loop Loop1
Mov ah,4ch
Int 21h
am new to Microprocessor 8086. i should submit this assignment by monday evening. Can anybody help me with this question?
Q1 Write an 8086 assembly language program that will compute:
2.0 * log10 X for x = 0.1, 1.0, 10.0, 100.5, 1000.0, and six other values using a loop. All values are in the single-precision (short real) format.
Kindly help me. I am breaking my head like anything
Last edited by Ancient Dragon; Apr 28th, 2007 at 3:24 pm. Reason: snipped email
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Originally Posted by zunnur
I am new to Microprocessor 8086. i should submit this assignment by monday evening. Can anybody help me with this question?
Q1 Write an 8086 assembly language program that will compute:
2.0 * log10 X for x = 0.1, 1.0, 10.0, 100.5, 1000.0, and six other values using a loop. All values are in the single-precision (short real) format.
Kindly help me. I am breaking my head like anything
Q1 Write an 8086 assembly language program that will compute:
2.0 * log10 X for x = 0.1, 1.0, 10.0, 100.5, 1000.0, and six other values using a loop. All values are in the single-precision (short real) format.
Kindly help me. I am breaking my head like anything[/quote]
if u get the answer of this question plz mail me...... <snipped email>
Last edited by Ancient Dragon; Apr 28th, 2007 at 3:24 pm. Reason: snipped email
iam new to Microprocessor 8086. i should submit this assignment by 27th /04/2007i evening. Can anybody help me with this question?
Q1 Write an 8086 assembly language program that will compute:
2.0 * log10 X for x = 0.1, 1.0, 10.0, 100.5, 1000.0, and six other values using a loop. All values are in the single-precision (short real) format.
Kindly help me. I am breaking my head like anything
if u get the answer of this question plz mail me...... <snipped email> it is urgent...............
Q1 Write an 8086 assembly language program that will compute:
2.0 * log10 X for x = 0.1, 1.0, 10.0, 100.5, 1000.0, and six other values using a loop. All values are in the single-precision (short real) format.
Kindly help me. I am breaking my head like anything
if u get the answer of this question plz mail me...... <snipped email> it is urgent...............
Last edited by Ancient Dragon; Apr 28th, 2007 at 3:25 pm. Reason: snipped email
.data
short REAL4 0.1,1.0,10.0, 100.5, 1000.0, 400.0, 40.5, 60.6,8.9,10.1
count db 0ah
.code
Lea si, short
Mov cl, count
Loop1:
;moving the element to to ax register
Mov ax, [si]
;Push ax into first position
fld ax
;This instruction is used to find the logarithm of the top most element of the stack
FLDLG2
;Pop the element from the stack
Fstp dl
;displaying the value
Mov ah,02h
Int 21h
Loop Loop1
Mov ah,4ch
Int 21h
short REAL4 0.1,1.0,10.0, 100.5, 1000.0, 400.0, 40.5, 60.6,8.9,10.1
count db 0ah
.code
Lea si, short
Mov cl, count
Loop1:
;moving the element to to ax register
Mov ax, [si]
;Push ax into first position
fld ax
;This instruction is used to find the logarithm of the top most element of the stack
FLDLG2
;Pop the element from the stack
Fstp dl
;displaying the value
Mov ah,02h
Int 21h
Loop Loop1
Mov ah,4ch
Int 21h
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