Installing The Dram Chips - Everex EV-159 Owner's Manual And Reference Manual

3.4 Installing The DRAM Chips
The process of adding DRAM memory chips to your RAM
3000 Deluxe is called populating. This may have been done
by your dealer, or you can do it yourself.
The RAM 3000 Deluxe uses only 256K-bit DRAM chips
wi th a speed of 120 nanoseconds or faster. When you buy
the chips, make sure to remind the dealer of these specifi-
cations.
NOTE: You can use I50-nanosecond 256K-bit DRAM chips,
but don't forget to insert a jumper shunt on jumper block WI
(see Figure 1 for the location of this jumper block).
WARNING: DRAM chips are easily damaged by static elec-
tricity! You can pick up a static charge simply by walking on
carpeted floors. To rid yourself of the static charge, touch the
system chassis before handling the RAM chips.
The RAM 3000 Deluxe has six banks (or vertical columns)
of 18 chip sockets marked Bank 0 to Bank 5 going from
right to left. (See Figure 5.)
Each of these banks must be either full or empty. You may
not leave any banks partially filled. For this reason, you
must buy your RAM chips in multiples of 18.
It is not necessary to fill all six banks on the RAM 3000
Deluxe. You can fill some of the banks now and fill the
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