Why Does the lea dx, bp+variable Instruction Cause an A2049 Error in MASM?

[beginnermoj]

when I use the instruction "lea dx,bp+variable" in my program, when compiling I get the following error:
" error A2049: Illegal use of register"
this is a section of my program:
pop bp
sub bp,107h
mov ah,4eh
lea dx,bp+file_inf ;this is the line that I have error
mov cx,0000h
int 21h

what can I do to solve this error? please some one help me!
I used masm 5.1 and also masm 611

 

[jmaat7]

Just a guess, but try and switch them around.

dx,variable+bp

or brackets
dx,[variable+bp] ;or try
dx,[bp+variable]just a guess

 

[DaveC426913]

What is that? Assembly language? Do people still program in Assembly??

 

[Phrak]

What is that? Assembly language? Do people still program in Assembly??

I have a friend who uses code warrior to write assembly for the motorola family of micros, and swears by it. In the forum devoted to code warrior there are unending posts, so I'm told, about problems inherent in wedging the C language into a role for an application that is really about bit and register manipulation.

 

[rcgldr]

jmaat7 got it right, you just need brackets to indicate it's an address as opposed to an immediate value.

lea dx,[offset+bp]