address decoding of flash memory (bios rom chip)

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gandhig

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is it possible to find the address decoding logic of a 2 mbits flash memory (256K x 8) which is used as bios rom from its datasheet? the flash memory is divided into 5 blocks of 128 KB, 96 KB, 8 KB, 8 KB & 16 KB. it is written as compatible with standard microprocessor interface and JEDEC flash compatible pin out. i want to know which address pins will be used for the top 128 KB block and the bottom 16 KB block. can someone guide me?

regards,
g.gandhi
 

You forgot to tell the type.

In case of doubt, the device has just a linear memory space and block structure is only relevant for reprogramming-
 

Hi, it is a 32 pin plcc type with part code Pm29f002t-12jc. the datasheet says that it is a memory array with X and y decoder. I want to force a checksum error for a particular block of address (range 00000-1FFFFh) in my bios by shorting relevant address pins so that it can start the recovery. Thanks.
 

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