lea

Unknown

i am a beginner, and i wanted to know what does lea actually

do and when do we use it and how.

thanx in advance

Unknown

: i am a beginner, and i wanted to know what does lea actually

: do and when do we use it and how.

: thanx in advance

lea(load effective adress) is used to load the offset

adress of a memory reference into a register.

You should use it if you need to compute "complex"

offsets.

example:

;with LEA

lea bx, [buffer+bp+di+02]

;without LEA

mov bx, offset buffer

add bx, bp

add bx, di

add bx, 2

Unknown

: : i am a beginner, and i wanted to know what does lea actually

: : do and when do we use it and how.

: : thanx in advance

: lea(load effective adress) is used to load the offset

: adress of a memory reference into a register.

: You should use it if you need to compute "complex"

: offsets.

: example:

: ;with LEA

: lea bx, [buffer+bp+di+02]

: ;without LEA

: mov bx, offset buffer

: add bx, bp

: add bx, di

: add bx, 2

Unknown

hmm.. do these muls and adds in LEA take the

same clock cycles as the actual instructions?

: : : i am a beginner, and i wanted to know what does lea actually

: : : do and when do we use it and how.

: : : thanx in advance

: : lea(load effective adress) is used to load the offset

: : adress of a memory reference into a register.

: : You should use it if you need to compute "complex"

: : offsets.

: : example:

: : ;with LEA

: : lea bx, [buffer+bp+di+02]

: : ;without LEA

: : mov bx, offset buffer

: : add bx, bp

: : add bx, di

: : add bx, 2