2-dimensional DW array access without MULs?

I'm still trying to teach myself, so forgive me for getting something
wrong... I'm trying to optimize something for 8088 that is fairly MUL
heavy, and I thought a good way to do that was, for one particular
operation, precalculate a table and then just do (x,y) lookups into the
table. Only problem is, I can't figure out to do this without a MUL to
get to the right row/column in the array.

The only thing I can think of is to make my word array's column size
aligned by a power of 2 so that I can use shifts to get to the right
(x,y)... Or, if my word array is 128 columns or less I could use
something like "mov bh,y; shl bh,1; mov bl,x, mov result,[offset
myarray+bx]"... Is this the right line of thinking?

I'm just curious how people usually work with 2-dimensional arrays that
are not byte arrays, or have dimensions not aligned to a power of 2, or
over 64K, preferably with examples... Is LEA usually used for this? I
checked a few resouces but most of them list the different addressing
modes but not provide example usage (although I confess I haven't
checked Hyde's book yet).

Thanks in advance for any advice!

.

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