Memory
Genesis MP does not have any main memory soldered to the logic
board. At least one RAM DIMM must be present for the computer
to operate.
Genesis MP uses 168-pin Dual-Inline Memory Modules (DIMMs).
DIMMs provide the widest possible data path to the processor, for
maximum speed. Up to 8 or 12 DIMMs may be installed in
Genesis MP, depending on the model. The table below shows
maximum memory sizes by DIMM size. You can mix and match
different DIMM sizes on one Genesis MP.
For complete instructions on installing DIMMs in Genesis MP, see
Chapter 3 of the Genesis MP User Guide: “Connecting Additional
Peripherals”.
Genesis MP maximum
memory configurations
Interleaving
For maximum performance, DayStar Digital, Inc. recommends
memory interleaving. DIMMs can be installed one or more at a
time. When the startup software detects two DIMMs that are the
same size and installed in corresponding slots, it configures them
as a single 128-bit data bus for increased performance. For 128-
bit bus operation, both DIMMs in the pair also have to have the
same address mode.
To enable interleaving, install DIMMs in identical pairs. DIMM con-
nectors are organized into two banks: Bank A and Bank B. When
installing a pair of DIMMs for interleaving, install one DIMM in
Bank A, and its identical mate in the corresponding slot in Bank B.
For example, if you install a 16 MB DIMM in slot A3, install an
identical 16 MB DIMM in slot B3 to make sure the new memory is
interleaved.
DIMM
Maximum Memory with:
Size
8 DIMMs
12 DIMMs
4 MB
32 MB
48 MB
8 MB
64 MB
96 MB
16 MB
128 MB
192 MB
32 MB
256 MB
384 MB
64 MB
512 MB
768 MB
128 MB
1024 MB
1536 MB
Chapter 1 – Genesis MP Product Overview
Genesis MP
16
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