American Megatrends 28 series, User Manual

Page: 12 / 126

Chapter 1 Introduction
6
Memory Features,
Continued
Page Mode and Bank Interleave
The EZ-Flex can use dynamic random access memory
(DRAM) accessed in page mode. Page mode DRAMs
permit near zero wait state operation since page mode
access time to the DRAMs is significantly faster than a
normal access.
All SIMM memory is paged.
If one bank of memory is present (one bank consists of four
SIMMs) memory is paged. If both banks of memory are
present (eight SIMMs), memory is paged interleaved.
The page size is 1 KB if memory is present in Bank 1 only.
It is 2 KB if memory is present in both banks.
Bank interleave is used when groups of SIMMs are
installed. This technique interleaves 2 banks of DRAM
SIMMs by alternating accesses between them, further
reducing the access time to the DRAMs and allowing
virtually zero wait state operation.