HP ProBook 6540b User Manual

Specifications
Maintenance and Service Guide 6–7
System DMA specifications
System memory map specifications
Hardware DMA system function
DMA0 Not applicable
DMA1* Not applicable
DMA2* Not applicable
DMA3 Not applicable
DMA4 Direct memory access controller
DMA5* Not applicable
DMA6 Not assigned
DMA7 Not assigned
*ExpressCard controller can use DMA 1, 2, or 5.
Size Memory address System function
640 KB 00000000–0009FFFF Base memory
128 KB 000A0000–000BFFFF Video memory
64 KB 000C0000–000CFFFF Video BIOS
64 KB 000E8000–000FFFFF System BIOS
00100000–XFFFFFFF Extended memory (based on
memory installed)
(X+1)0000000–FEDFFFFF PCI bus
FED00000–FED003FF High-precision event timer
FEE01000–FFFFFFFF PCI bus

HP ProBook 6540b Specifications

General

Graphics	Intel HD Graphics
Operating System	Windows 7 Professional
Processor	Intel Core i5-430M
RAM	Up to 8GB DDR3
Storage	250 GB HDD (7200 rpm)
Display	15.6-inch diagonal LED-backlit HD anti-glare (1366 x 768)
Battery	6-cell Li-Ion
Weight	2.6 kg (5.7 lbs)
Chipset	Mobile Intel HM57 Express
Optical Drive	DVD+/-RW SuperMulti DL
Wireless	802.11a/b/g/n
Ports	USB 2.0, VGA, DisplayPort, eSATA, RJ-45, headphone/microphone combo jack