Andy Ball wrote in a message to Roy J. Tellason:

 AB> Hello Roy,

  MR> BTW I found another 4M stick with it: LH64400BK-70 and it's also
    > on a 72 pin stick with 8 chips like the other but made by Sharp.

  RJT> My guess on these would be 4Mx1 rather than 1Mx4.  Do these
     > sticks have foil patterns for an additional 8 chips on the
     > reverse side?

 AB> If Mike were talking about 30-pin SIMMs that might be more likely,
 AB> but eight 1-bit chips would only store 1 byte per word, instead of
 AB> the four I would expect to see on a normal 72-pin SIMM.  I think
 AB> it's more likely that they're eight 4-bit wide chips, providing a
 AB> 32-bit word.

Yeah,  I guess I was thinking of the wrong data width,  there...

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