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Upgrading Memory
Important Note
The procedure explained in this section is for authorized engineers only.
The maximum memory capacity of your Apricot is 768 Mbytes, provided
by up to two ECC memory cards.
Each memory card contains twelve 36-bit SIMM (Single Inline Memory
Module) slots. They are arranged into 3 banks of 4 slots each. The banks
are numbered 1, 2 and 3. Each bank has two slots on the left and two on
the right as you look at the card. You must populate the banks according
to the following rules:
♦
The banks will accept 2, 4, 8, 16 or 32-Mbyte approved fast-page
parity SIMMs.
♦
For ease of physical access to the modules, always fill bank 1 first
and then move to the next one in numerical order.
♦
You must populate a bank fully, i.e. with four modules. You cannot,
for example, just add two modules to a bank and leave the other
two slots empty.
♦
Although you can fit any capacity module in any bank, all SIMMS
in a given bank must be identical. For example, you cannot mix 2-
Mbyte modules and 4-Mbyte modules within the same bank.
♦
You can fit modules of different capacities in different banks. For
example, if bank 1 has 2-Mbyte modules, you can fit modules of
another allowable capacity (i.e. up to 32 Mbytes) into bank 2.
Note
Before attempting to remove or fit a SIMM, be sure to take proper antistatic
precautions, such as using an antistatic strap or placing the memory card flat on an
antistatic mat (see the Appendix for more details on antistatic precautions).
U p g r a d i n g Y o u r S y s t e m
OWNER'S HANDBOOK 3-7
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