Hi - I'm attempting to debug a problem with an existing embedded controller board. The board uses a MC68020 and uses either 1 or 2 banks of 30pin simm memory. I think this is a 199? design. The board supports either
1M or 4M memory. The SIMM memory is configured to be accessed as a 16bit wide data bus. The 1M memory works OK, but there are read/write errors when using the 4M memory. I'm confident the 4M memory that I bought is compatible, as I've studied the datasheets for both 1 and 4M and their topologies and access speeds are the same. No parity is used in this design. Refresh (- posted
15 years ago