Intel 317443-001US Manuale Utente

Pagina di 57
Intel
®
 945GME Express Chipset—About This Manual
Intel
®
 Core
TM
 2 Duo processor with the Mobile Intel
®
 945GME Express Chipset
Manual
May 2007
8
 
Order Number: 317443-001US
Instructions 
Instruction mnemonics are shown in uppercase. When you are 
programming, instructions are not case-sensitive. You may use 
either uppercase or lowercase.
Numbers 
Hexadecimal numbers are represented by a string of 
hexadecimal digits followed by the character H. A zero prefix is 
added to numbers that begin with through F. (For example, FF 
is shown as 0FFH.) Decimal and binary numbers are 
represented by their customary notations. (That is, 255 is a 
decimal number and 1111 1111 is a binary number. In some 
cases, the letter is added for clarity.)
Units of Measure 
The following abbreviations are used to represent units of 
measure:
A amps, 
amperes
GByte gigabytes
KByte kilobytes
kilo-ohms
mA milliamps, 
milliamperes
MByte megabytes
MHz megahertz
ms milliseconds
mW milliwatts
ns nanoseconds
pF
picofarads
W watts
V volts
µA microamps, 
microamperes
µF microfarads
µs microseconds
µW microwatts
Signal Names 
Signal names are shown in uppercase. When several signals 
share a common name, an individual signal is represented by 
the signal name followed by a number, while the group is 
represented by the signal name followed by a variable (n). For 
example, the lower chip-select signals are named CS0#, CS1#, 
CS2#, and so on; they are collectively called CSn#. A pound 
symbol (#) appended to a signal name identifies an active-low 
signal. Port pins are represented by the port abbreviation, a 
period, and the pin number (e.g., P1.0).