Legacy Memory is having different kinds of memory modules which included
EDO Memory
FPM Memory
30 PIN SIMM
72 PIN SIMM
Burst EDO
EDO Memory
(Extended Data Out RAM) A type of dynamic RAM chip that improved the performance of fast page mode (FPM) memory in the mid 1990s. As a subset of fast page mode, it could be substituted for page mode chips. However, if the memory controller was not designed for the faster EDO chips, the performance remained the same as fast page mode.EDO eliminated wait states by keeping the output buffer active until the next cycle began. BEDO (Burst EDO) was a faster type of EDO that gained speed by using an address counter for next addresses and a pipeline stage that overlapped operations. EDO memory was superseded by SDRAM.
FPM Memory
Prior to newer forms of dynamic random access memory (DRAM), FPM DRAM (Fast Page Mode DRAM) was the most common kind of DRAM in personal computers.
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