RAM DIMM Connectors
Genesis MP has 12 or 8 DIMMs/expansion slots. These RAM
expansion slots accept an 8-byte DIMM and have a 64-bit-wide
data bus.
A minimum of one RAM DIMM must be present for the Genesis
MP to operate. The 8-byte DIMMs can be installed one or more at
a time. If the software detects two DIMMs that are the same size
in corresponding slots, they will be configured as one single 128-
bit data bus, thus increasing performance. For a 128-bit bus, both
DIMMs in a pair must have the same address mode.
VRAM DIMM Connectors (3 slot Genesis MP)
The 3 slot Genesis MP has 4 VRAM DIMMs/expansion slots.
These VRAM RAM expansion slots accept 1 MB VRAM DIMMs
that are 32-bit-wide, 112-pin fast-paged mode, with 70ns RAM
access times or faster.
VRAM DIMMs must be installed in pairs, allowing for either 2 or 4
MB of total VRAM.
Cache Connector (3 slot Genesis MP)
The 3 slot Genesis MP has an expansion slot for a Level 2 (L2) or
secondary cache DIMM. Cache DIMMs are available in sizes from
256K to 4 MB.
Although many third party vendors provide cache DIMMs for
Apple’s 3 slot PCI motherboards, not all of these caches are com-
patible with the Genesis MP. Contact DayStar Technical Support
for a list of recommended cache DIMM vendors.
Genesis MP
Appendix B
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