What IC? These are run-of-the-mill parallel EPROMs which can do nothing besides read and write data. The glue logic is required to map out where each section of data is stored in respect to the CPU. I can design a single CPLD to function as all of the logic, but that is something I am not yet ready for. I am in the market for a good CPLD/FPGA textbook if you know of one.
All of the diagrams I put into my post were for logic, however some may not be clear because of how the ICs are drawn. I suspect that the power diagram you mentioned is the 74125 IC which is a quad three-state buffer. It basically says when data may pass through and when it may not. It does not manipulate the data in any way.
And the last photo may also be confusing because it contains a custom "Acclaim" IC. This IC functions as many things including glue logic, serial-to-parallel data processor, etc. It is basically the same as the board above it, but just in one IC.
Originally Posted by Jazzmarazz
What IC? These are run-of-the-mill parallel EPROMs which can do nothing besides read and write data. The glue logic is required to map out where each section of data is stored in respect to the CPU. I can design a single CPLD to function as all of the logic, but that is something I am not yet ready for. I am in the market for a good CPLD/FPGA textbook if you know of one.
$28, isn't nothing compared to the almost $1,000 I owe. 
