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Memory map – Gateway 920 User Manual

Page 96

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91

Electronic specifications

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Memory map

03F0h - 03F5h

Diskette Controller

03F6h - 03F7h

Primary IDE - Sec. Diskette

03F8h - 03FFh

Serial Port A (Primary)

0400h - 043Fh

DMA Controller 1, Extended Mode Registers

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

0CF9h

NBX Turbo and Reset control

0CFCh

PCI CONFIG_DATA Register

46E8h

Video Display Controller

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

Expansion card 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

Address

Resource