pc87591l-n05 National Semiconductor Corporation, pc87591l-n05 Datasheet - Page 264

• Manufacturer Part Number: pc87591l-n05
• Description: Lpc Mobile Embedded Controller
• Manufacturer: National Semiconductor Corporation

www.national.com
5.0 Host Controller Interface Module
The following figures illustrate the mapping function that results from the address translation function for a Shared BIOS
scheme (Figure 91) and when the expansion memory is mapped as a non-BIOS block of memory (Figure 92).
FFFF FFFF
000F FFFF
000E FFFF
FFE0 0000
FFF0 0000
000E 0000
000F 0000
0000 0000
Figure 91. Host to Core Address Translation: 386 Mode-Compatible BIOS Range
16
16
16
16
16
16
16
16
~ ~
Legacy BIOS
Legacy BIOS
Extended
Host Address
2
(1)
1
~ ~
(Continued)
264
Core Address
2
1
Numbers (1,2) indicate the links
between host memory and core
memory maps.
1F FFFF
10 0000
01 0000
00 0000
00 E000
(Main Block Top Address)
Expansion Memory
Reserved (Out-of-Range)
16
16
16
16
16
MBTA
Revision 1.2