
67
DRAM Settings
The first chipset settings deal with CPU access to dynamic random access memory
(DRAM). The default timings have been carefully chosen and should only be altered
if data is being lost. Such a scenario might well occur if your system had mixed
speed DRAM chips installed so that greater delays may be required to preserve the
integrity of the data held in the slower memory chips.
Pre-defined values for DRAM, cache.. timing according to CPU type & system clock.
The Choice: Enabled, Disabled.
Note: When this item is enabled, the pre-defined items will become SHOW-
ONLY.
The DRAM timing is controlled by the DRAM Timing Registers. The timings
programmed into this register are dependent on the system design. Slower rates may
be required in certain system designs to support loose layouts or slower memory.
60ns
DRAM Timing Type.
70ns
DRAM Timing Type.
DRAM must continually be refreshed or it will lose its data. Normally, DRAM is
refreshed entirely as the result of a single request. This option allows you to
determine the number of CPU clocks allocated for the
R
ow
A
ddress
S
trobe to
accumulate its charge before the DRAM is refreshed. If insufficient time is allowed,
refresh may be incomplete and data lost.
3
Three clocks.
4
Four clocks.
Four clocks
is the default.
Auto Configuration
DRAM Timing
DRAM RAS#
Precharge Time
Содержание P55XB2
Страница 2: ...2...
Страница 8: ...8 75 90 100 120 133 150 166 180 200 233 266 JP7 JP4 JP3 JP16 JP15 Figure 2 Jumpers location...
Страница 17: ...17 Step 16 Connect the Keyboard Follow the keyboard cable s key direction and connect to this motherboard...
Страница 25: ...25 75 90 100 120 133 150 166 180 200 233 266 JP7 JP4 JP3 JP16 JP15 Figure 2 Jumpers for P55XB2...
Страница 37: ...37 Parallel port is a 25 pins female external DB25 connector for parallel port PCI Parallel...
Страница 45: ...45 The rest of this manual is intended to guide you through the process of configuring your system using Setup...
Страница 56: ...56 The category determines whether the computer will stop if an error is detected during power up...
Страница 64: ...64 RAM However it is optional depending on chipset design Video Shadow will increase the video speed...
Страница 76: ...76 When set On activity will neither prevent the system from going into a power management mode nor awaken it...
Страница 88: ...88 MMX 200...