ECS NEATSX User Manual page 20

Hardware Specifications
The NEATsx allows the installation of several types of RAM
in the same system. Six of the sockets for each DIP DRAM bank have
a dual design. The SIP banks are standard SIP sockets that will accept
modules with either 256 Kbit or 1 Mbit chips.
The result is a high degree of flexibility to install precisely the
amount and kind of memory desired. There are numerous possible
configurations. The table below lists the possible choices.
When installing or adding memory, the banks must be filled
beginning with bank zero, then bank one, and so on. Each bank can
contain only one kind of chip. Different types of chips can not be
mixed in the same bank except for the 44256/41256 configuration
mentioned earlier. A bank must be completely full to function.
Another nice feature of the NEATsx is that bank numbers can
be reassigned so that SIP modules can be used first. Normally the DIP
DRAM banks are assigned the zero and one positions. If you want to
use SIP modules exclusively, the bank numbering can be changed by
altering the setting of jumper JP6. The procedure to do this is ex­
plained in the Hardware Setup section.
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