ASR-10 Operator's Manual - MPCStorageSolution

Section 1 — Controls and ArchitectureYou will notice that there are two slots with SIMMs installed, and two slots that are empty.These empty slots are called Expansion SIMM Slots, and are used for adding additional SIMMs(when expanding the memory). Directly above the Standard SIMM Slots, you will find theMemory Expansion Jumper.About the Memory Expansion JumperThe Memory Expansion Jumper allows you to access the information in the Expansion SIMMSlots. It must be moved to the EXP (Expansion) pins in order for any SIMMs plugged into theexpansion slots to be recognized. If you do not have any SIMMs plugged into the Expansionslots, the Memory Expansion Jumper must be installed on the STD (Standard) pins, or the ASR-10will not boot up (display will be blank).Installing SIMMsMemory is user-installable in 1, 2, 4, 5, and 8 MegaWord configurations, with 1 and 4 MegaByteSIMMs, as shown below. There are only five possible memory configurations available on theASR-10, as shown in the diagram:1 MegaWordJumper is connectedto STD (Standard) pins2 MegaWordsJumper is connectedto EXP (Expansion) pins4 MegaWordsJumper is connectedto STD (Standard) pins(as shipped from the factory)Two1-MegaByteSIMMs(Standard Slots)ExpansionslotsemptyFour1-MegaByteSIMMsTwo4-MegaByteSIMMs(Standard Slots)ExpansionSlotsempty5 MegaWordsJumper is connectedto EXP (Expansion) pins8 MegaWordsJumper is connectedto EXP (Expansion) pinsTwo4-MegaByteSIMMs(Standard Slots)Two1-MegaByteSIMMs(Expansion Slots)Four4-MegaByteSIMMsTHESE ARE THE ONLY CONFIGURATIONS THAT WILL WORK PROPERLY! Any otherconfigurations will not yield the maximum memory available, or provide the optimalperformance.About Memory 15