Question: need help creating a matrix procedure of user specified size

I am trying to set up a procedure for creating a matrix of user specified size.  Basically, I want the user to be able to specify the size and the values of the internal parameters and maple will generate the matrix.  The matrix has the form:

[e   h1   0   0   ...    0]

[h1  e    h   0   ...    0]

[0    h    e   h   ...    0]

...

[0  ...   h    e   h      0]

[0  ...   0    h   e     h2]

[0  ...   0    0   h2   e-b]

(sorry for the cumbersome representation)

Essentially, I am trying to establish an NxN matrix with matrix elements where M[n,n]=e for all n, except n=N, where M[N,N]=e-b. Additional constraints are M[1,2]=M[2,1]=h1, M[N,N-1]=M[N-1,N]=h2, and M[n+/-1,n]=h (for entries between M[2,3] and M[N-2,N-1]).

I have had fairly limited experience with procedures in maple and the online information has been of little help.  Thank you so much for your input, it is greatly appreciated.