156
Table 51.
System I/O Addresses (continued)
Address(es)
Resource
Device
Notes
03C0h - 03CFh
Video Display Controller
03D4h - 03DAh
Color Graphics Controller
03E8h - 03EFh
Serial Port A
03F0h - 03F5h
Diskette Controller
03F6h - 03F7h
Primary IDE - Sec. Diskette
03F8h - 03FFh
Serial Port A (Primary)
0400h - 043Fh
DMA Controller 1, Extended Mode
Registers
PIIX4E
04D0h - 04D1h
Interrupt Controllers 1 and 2 Control
Register
0678h - 067Ah
Parallel Port (ECP)
0778h - 077Ah
Parallel Port (ECP)
07BCh - 07BEh
Parallel Port (ECP)
0CA0 - CA3h
BMC Registers
0CF8h
PCI CONFIG_ADDRESS Register
Located in 450NX
0CF9h
NBX Turbo and Reset control
PIIX4E
0CFCh
PCI CONFIG_DATA Register
Located in 450NX
46E8h
Video Display Controller
Memory Map
Table 52.
Memory Map
Address Range (hex)
Amount
Function
0 to 07FFFFh
640 KB
DOS region, base system memory
0A0000h to 0BFFFFh
128 KB
Video or SMM memory
0C0000h and 0DFFFFh
128 KB
Add-in board BIOS and buffer area
0E0000h to 0FFFFFh
128 KB
System BIOS
0E0000h to 0EFFFFh
2 MB
Extended system BIOS
FC000000h to FFFFFFFFh
64 MB
PCI memory space
Summary of Contents for SC450NX - Server Platform - 0 MB RAM
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