System Board1-131.7 Memory ConfigurationsThe system board comes with six 72-pin SIMM sockets that allows youto expand memory to a maximum of 384 MB. The SIMM socketssupport 5V FPM/EDO DRAMs with 4-, 8-, 16-, 32-, and 64-MBcapacities and 60ns (or less) access time. The FPM DRAM is thestandard DRAM type. The EDO DRAM is actually very similar to FPM.The only difference is that EDO DRAM holds the memory data validuntil the next memory access cycle, that is similar to pipeline effectand therefore reduces one clock state, while traditional FPM tri-statesthe memory output data to start the pre-charge activity.Table 1-3 lists the possible memory configurations.1.7.1 Rules for Adding Memory• Use only one type of SIMM in a given bank.• You may combine different types of SIMMs for a memoryconfiguration as long as the SIMMs in each bank are of the sametype.• Always install SIMMs in pairs. For example, for a total memory of8 MB, install two 4-MB SIMMs into the sockets marked SIMM1and SIMM2 or SIMM3 and SIMM4. You can not use an 8-MBSIMM alone for an 8-MB memory.• Always install SIMMs from the outermost socket first. Forexample, socket SIMM1 before socket SIMM2, or socket SIMM3before socket SIMM4.• Always remove SIMMs from the innermost socket first. Forexample, socket SIMM4 before socket SIMM3, or socket SIMM2before socket SIMM1.