If you have Linux looks like Ubuntu has m68k version of binutils in the repos. I'd just use that as a first go. sudo apt-get install binutils-m68k-linux-gnu
m68k-linux-gnu-objdump -D...

Oh ok gotcha I understand now. It's been a while since I have looked into this stuff so please forgive me. The 512kb and 1mb pcms used the same processor chip the Moto 68k? Do you know if there were...

Are you sure the chip is a Motorola 68k chipset. I thought all the later 1mb pcms used am29f800bb-70se chips.