24
Intel
®
NetStructure
TM
ZT 5515 Compute Processor Board Technical Product Specification
Getting Started
Figure 3. Memory Address Map Example
4 GB
FFF80000h - FFFFFFFFh
SYSTEM BIOS/Flash
4 GB - 512 KB
512 MB
1 MB
8000000h - FFF7FFFFh
PCI PERIPHERALS
100000h - 1FFFFFFFh
SYSTEM MEMORY
E0000h - FFFFFh
SYSTEM BIOS
896 KB
800 KB
768 KB
640 KB
0
C8000h - DFFFFh
BIOS EXTENSION
C0000h - C7FFFh
VGA BIOS
A0000h - BFFFFh
VGA DISPLAY MEMORY
0h - 9FFFFh
LOCAL DRAM
Figure 4. I/O Address Map (Sheet 1 of 2)
D00 - FFFFh
PCI*
*Onboard ISA peripherals
CF8 - CFFh
PCI Config/RST Control
addressed between
780 - CF7h
PCI Reserved
100h - 7FFh decode 11 bits
778 - 77Fh
LPT ECP Registers
of address (A0h - A10h).
400 - 777h
Reserved
Therefore, these peripherals
3F8 - 3FFh
COM1
will alias throughout the 16-bit
3F0 - 3F7h
Floppy / IDE Registers
I/O space at the following
3E0 - 3EFh
Reserved
ranges:
3B0 - 3DFh
VGA Registers
x100-x3FFh
380 - 3AFh
Reserved
x500-x7FFh
378 - 37Fh
LPT
x900-xBFFh
300 - 377h
Reserved
xD00-xFFFh
2F8 - 2FFh
COM2
PCI devices can fully utilize
200 - 2F7h
Reserved
the address space from
1F8 - 1FFh
Reserved
D00 - FFFFh, since subtractive
1F0 - 1F7h
Primary IDE Registers
decoding is used for the
178 - 1DFh
Reserved
onboard ISA devices.
170 - 177h
Secondary IDE Registers
100 - 16Fh
Reserved
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